REFRIGERATION AND AIRCONDITIONING NOTES.pdf

8/14/2019 REFRIGERATION AND AIRCONDITIONING NOTES.pdf

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1.FUNDAMENTALS OF REFRIGERATION

1.Define Refrigeration

Bs }qsqs [NRP xmsyLRisVVRVLiRV LiRLji [xms, xmsLjixqsLSNRPLi[R NRPVs DugRiR DLiRVsV [zqssVLiVVs s

[ RVV yss LjizmnslLi[xtsQs @s @LiRVLRiV.

2.What are the various methods of Refrigeration?

LjizmnslLi[xtsQsV NRPVgRi[ RVV xmsRRVV

1. Ice LjizmnslLi[xtsQsV 2. Dry Ice LjizmnslLi[xtsQsV 3. Air Expansion LjizmnslLi[xtsQsV

4. Gas throttling LjizmnslLi[xtsQsV 5. Evaporative LjizmnslLi[xtsQsV 6. Steam Jet LjizmnslLi[xtsQsV

7. Liquid gas LjizmnslLi[xtsQsV 8. Vapour Compression LjizmnslLi[xtsQsV 9. Vapour Absorption LjizmnslLi[xtsQsV.

3. What is Ice Refrigeration?

}qsqs VVNRP DugRiRsV xmsNRPX zqsRLigS gSs [NRP NRPXsVLigS R RWLRiV [zqss IcesV DxmsWgjiLiiLiRgjiLiRVsV Ice

LjizmnslLi[xtsQsV @s @LiRVLRiV.

4. What is Dry Ice Refrigeration?

xmnsVsLRiWxmsLi[D s NSLRis R RW\ZNPQQ=` sV Dry Ice @s @LiRVLRiV.Bj xmnsVsLRiWxmsLi sVLi s[LRiVgS y RVVLRiWxmsLi[NTP sWLji

LjizmnslLi[xtsQsV xmsssVVsV NRPVgRi[ RVV yss Dry Ice LjizmnslLi[xtsQsV @s @LiRVLRiV.

5. What is Air Expansion Refrigeration?

gSs compress [zqs, yss zqsLRi {msRsLi sR cool [zqs sVLRi adibaticgS expand [ RVgS ksDugRiR gS

RgRiVsV.kss DxmsWgjiLiiLi LjizmnslLi[xtsQsV xmsNTP RVsV [ RVVsV Air Expansion LjizmnslLi[xtsQsV @s@LiRVLRiV.


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8RsLRiWxmsLi[gS qs sV y y*LS LjizmnslLi[xtsQsV NRPVgRi[ RVszqss }qsqs [NTP }qs [zqs LjizmnslLi[xtsQsVNRPVgRi[ RVV

yss Liquid gas LjizmnslLi[xtsQsV @s @LiRVLRiV.

7. What is Evaporative Refrigeration?

Water, RVV xmsNRP gS sVLi latent heatsV gRizLi evaporate @sLi ss gS RT @j N][VyLiLRiV [NTP

circulate @LiVV LjizmnslLi[xtsQsV @ss Evaporative LjizmnslLi[xtsQsV @s @LiRVLRiV.

8. What is Gas Throttling Refrigeration?

gSqs sV FsNRPVs {msRsLi sR FLRitsQ xmsg`i [y ALji\|mnsqs(Orifice) y*LS RNRPVs {msRysNTP throttle [zqssxmsoRV

ys

DugRiR Rgji gSqs cool @gRiVsV. C cool gSqs sV LjizmnslLi[xtsQsV [ RVVNRPV DxmsWgjiLiRVsV GasThrottling


9. Explain briefly about Ice Refrigeration.

C sysLisLiRV AxLRi xmsyLRisVVsV cool [ RVsNTP IcesV DxmsWgjiLiRVLRiV. Ice LjizmnslLi[LRiV,insulation

[ RVTs ZNP[s \|ms gRiLisLiRV ice piece blocksV DLiRsNTP dsVgS ice traysV NRPgjiDLiRVsV.Icecompartment

NTPLiRVgS |qs sLiRV AxLRi xmsyLRisVVV s* [ RVT DLiRVsV. [xms Ds AxLRi xmsyLRisVVVicey*LS circulate

@LiVVs gS ss cool @gRiVsV.

s[NTPs gS \|msNTP Ljigji icesV NRPLjigjiLi cool @gRiVsV. ks ryLiRR |msLjigji rlLi[ }qsqs \sxmso xmsxqsLjiLi AxLRi

xmsyLRisVV sVLiT s[Ts gRizLi [\ZNP sVLRi \|msNTP xmsxqsLjiLiRVsV. C sRLigS gS LjizmnslLi[LRiVsLiRVxmsxqsLjiLi [xms


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Ds AxLRi xmsyLRisVVsV RgS DLiRVsV.

Ice LjizmnslLi[xtsQsV lLiLiRV LRiNSV. a) Direct Method b) Indirect Method

a) Direct Method:- CxmsRsLiRV ice sVLji RVVcool [ RVszqss ALjiNRP= IZNP[NR PLiFyLRiVsVLiV sLiRVDLiRRVsV.

icesV \|msgRiLi[DLi x msLjiryLRi[s gSs cool [ RVVR VLRiV. cold air @jNRP ryLiRR ss NTPLiRVgSxmsxqsLjiLi s[T gSs

ice \sxmso ssV [ RVVsV. Storage spacesLiRV gRi gS cool [ RVszqss xmsyLRisVVsVLi s[TsgRizLi s[NRPVsV

sVLji RVV ryLiRR RgRiLi ss Storage spacesVLi \|msNTP xmsxqsLjiLi icegRispacesNRPV[LRiVsV. C sRLigSgS circulate

@sLiss @xLRi xmsyLRisVVV cool @sosV.C xmsRs TLiNRPV= cool [ RVsNTP DxmsWgjiLiRVLRiV.

b) Indirect method:- C xmsR[ Storage spacesVLi ice s[LRiV[ RVT, @xLRi xmsyLRisVV NRPWLigRiV\Qs xqsLRiVQ

[xtsQsss LRiVgRiVsV. \Qs NRPgjis sVso WVNRPV ice xqs|m^s[ RVRVsV. StoragesNRPV NRPWLigRiV \QsxqsLRiVQ [V

@LiVV articles cool @LiVV Ljigji \Qs ice NRPLiFyLRiVsVLiV sNRPV [LRiVsV. C sRLigS \|qsNTP Lkizms @gRiVsV.kss |msR FyLiV

LiRV DxmsWgjiLiRVLRiV.

10. Write short notes on Dry Ice Refrigeration.

xmnsVsLRiWxmsLi[gR i NSLRis R RW\ZNPQQ=` sV Dry Ice @s @LiRVLRiV.Bj xmnsVsLRiWxmsLi sVLi RsLRiWxmsLi [NRPVLiy

y RVV LRiWxmsLi[NTP sWLji LjizmnslLi[xtsQsV xmsssVVsV NRPVgRi[ RVVsV.kss sublimation@[email protected] @xLRi

xmsyLRisVVV gRi NSLRiVs \|mss sVLji RVV xmsNRPLiRV Dry Ice flakes [y ry LRiWxmsLi[|ms T DLiRVsV.Bj AxLRi

xmsyLRisVVsVLi s[Ts gRizLifrozen NRPLiUxtsQsV[DLiR VsV.


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kss @xLRi xmsyLRisVVsV, Hqs NUPsV sV INRP][sVLi s[lLi[][NTP s= FLRiV[ RVVNRPVDxmsWgjiLiRVLRiV. ks

LkiRV FsNRPVs. Bk ice LjizmnslLi[xtsQsV NRPs lLiLixmso LjizmnslLi[xtsQsV NRPgji DLiRVsV.

11. Write shortnotes on Air Expansion Refrigeration.

C xmsRsLiRV gSs compress [zqs, yss zqsLRi {msRsLi sR cool [zqs sVLRi adibaticgS expand[ RVVR VLRiV.

Bj gRiLjixtsQLigS DugRiRsV RgjiLiRVsV.

C xmsR[B s {msRsLi [y[Du gRiRsV internal energys DxmsWgjiLi work LRiVgRiVsV.Coldair,

N][V yLiLRiV y*LS xqsLRiVQ [V @LiVV @LiRV[sV s [zqss { sV ]gRiLiRVsV.12. Write short notes on Liquid gas Refrigeration.

LjizmnslLi[xtsQsV NRPVgRi[ RVsNTP DxmsWgjiLiRV RsLRiWxmsy RVVsoV nontoxicgS DLiRVsV. C @RLiNTP ss

RsLRiWxmsLi[gR i sRs sVLji RVV NSLRis R RW\ZNPQQ=` sV LjizmnslLi[xtsQsV N]LRiNRPV DxmsWgjiLiRVLRiV.

Liquid gas, insulation gS [ RVTs zqsLi RLRiV sLiRV fill [ RVRVsV sVLji RVV k s xmsLjisWLisV

y* y*LSs RVLiR [ RVVRVLRiV. LjizmnslLi[ spacesLiRV y= y*LS kss }qsQ [ RVVR VLRiV.CLiquid gasevaporate @LiVV C

spacesLiRV RNRPVs DugRiRsV NRPVgRi[ RVVsV. NSszqss DugRiR NRPs FsNRPVs DugRiR DsxmsVRV,LixmslLi[RLRiV

NRPLi[LRiV liquid linesV LRi, Liquid nitrogensV }qs |RL`i [NTP xmss[bPLi @NRPR y RVVsogS sWLjiNSszqss DugRiRsV

maintain [ RVVsV.

C xmsR xmsLiRV ,NSRVgRiWLRiV,sWLixqsLi,[xmsV sVVR\s ys s= FLRiV[ RVV yxsLisLiRVNRPWLig`i N][xqsLi

DxmsWgjiLiRLRiV.kss N][V rlLi[sLiRV NRPWR DxmsWgjiLiRVLRiV.LjizmnslLi[ space sVLi { sV


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gRi{Lis RLRiVyR

gSxqsVsV yysLRiLi[sNTP sRVR[ RVVsV.

13. What is vapour compression Refrigeration system?

LjizmnslLiLi vapour sV compress [zqs LjizmnslLi[xtsQsV LRiVgRiVsV NRPsVNRP kss vapour compressionRefrigeration system @s

@LiRVLRiV. ksRVLiRV NRPLixmsxqsLRiV, NRPLis=LRiV,FsyxmslLi[LRiV sVLji RVV FsN`P= }mss=sV y* DLiRVsV.

14. Explain Vapour Compression Refrigeration system

Vapour Compression Refrigeration system sLiRV 4 process DLiRVsV. @s 1.NRPLixmsxtsQsV(Compression)

2. NRPLiR


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4.FsyxmslLi[xtsQsV(Evaporation):- RNRPVs {msRsLigRi liquid LjizmnslLi[Li FsNP= }mss=sV y* sLiRV FsNP=}mss=sV Lijs

RLRiVyR FsyxmslLi[LRiV(Evaporator) [NRP LjizmnslLi[[` }qsqs sNRPV xmss[bPLi, @NRPR { sV gRi{LiRVsV. C{ ss

LjizmnslLi[Li, RsLRiWxmsLi sVLi Vapour (y RVV)sNRPV sWLRiVsV. Bj NRPLixmsxtsQLRiV VVNRP xqsORPQsV rN`P sLiRVsuck [ RVRVsV.

C sRLigS \|qsNTP Lji{ms @LiVV LjizmnslLi[LRiVsLiRV @sxqsLRi\sVs DugRiR sRV sLRiNRPV LRiVgRiVsV.

2.REFRIGERATION EQUIPMENT

1. What are the main components of the Vapour Compression Refrigeration system?

Vapour Compression Refrigeration system VVNRP xmsys gRisVVV 1. NRPLixmsxtsQLRiV 2. NRPLiTs=LRiVsVLji RVV

NRPWLigRiV sLRiV 3. FsZNP[=Qs=sV T\sqs 4. FsyxmslLi[LRiV [y {mnsLRiV.

2. What is the function of Compressor in Refrigeration system?

Lji {mnslLi[xtsQsV zqsxqssV sLiRV NRPLixmsxtsQLRiV VVNRP sRVV

1. FsyxmslLi[LRiV sVLi RNRPVs {msRsLigRi Lji{mnslLi[Li sV dxqsVN]sV,2. Lji{mnslLi[Li sV NRPLixmsxqsV[zqs ys VVNRP {msRsLi sVLji RVV DugRiRsV |msLiRV,

3. NRPLiTs=LRiV sNRPV FsNRPVs {msRsLigRi Lji{mnslLi[Li sV sLRiV [ RVV,

4. Lji {mnslLi[xtsQsV zqsxqssV sLiRV Lji{mnslLi[Li sV sLRiLiRLRiLigS xqsLRiV[ @LiVVsV sVLiVVs s [ RVV.

3. What is the function of Condenser?

NRPLiTs=LRiV VVNRP sj, NRPLixmsxtsQLRiV sLRiV [zqss Vapour Lji{mnslLi[Li sV liquid Lji{mnslLi[Li gS sWLRiV.

4. What is the function of Evaporator?

FsyxmslLi[LRiV VVNRP sj, Lji{mnslLi[[` }qsqs sVLi { sV gRizLi RNRPVs DugRiRsV NRPVgRi[ RVV.

5. What is the function of Expansion device?

FsZNP[=Qs=sV T\sqs VVNRP sRVV


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1. NRPLiTs=LRiV sVLi ss FsNRPVs {msRssLi gRi liquid Lji{mnslLi[Li sV FsyxmslLi[LRiVNTP xqs|m^s [ RVsNTPsVVLiRV

RNRPVs {msRssLi gRi liquid Lji{mnslLi[Li gS sWLRiV,

2. FsyxmslLi[LRiV\|ms gRi [RV AyLRiLigS Lji{mnslLi[Li FnsV NRPLi[V [ RVVsV,

3. FsyxmslLi[ @[V lLi[ xmsNSLRiLi Lji{mnslLi[Li sV xqs|m^s [ RVVsV.

6. What is the function of Capillary tube?

ZNP[zmsLRiV WV VVNRP sRVV,

1. Liquid Lji{mnslLi[Li VVNRP {msRsLisV RgjiLiRV, 2. FsyxmslLi[LRiVsNRPV Lji{mnslLi[Li FnsV NRPLi[V[ RVV.

7. What is the classification of Compressors?

NRPLixmsxtsQLRiVsV CNTPLij sLi[RLRiV:-

1. NRPLixmsxtsQsV Ljilgi[s ysLisV

a) lLi{qsF ZNPLigRiV NRPLixmsxtsQLRiV b) L][Lki NRPLixmsxtsQLRiV c) |qsLixmnsQogRi NRPLixmsxtsQLRiV

2. sLjiLigRiV rNRPV xqsLisV

a) zqsLigji RWNTPLig`i b) RV RWNTPLig`i

3. }qs xqsLisV

a) zqsLigji }qs b) sV }qs

4. \Qs s

a) \lLiNRPV \Qs b) V \Qs

5. \|mssVWsLRiV Dsyss

a) Jxmss [y xqs*RLiR |qssV |LjiN`P b) |LjiN`P

8. What is the classifying of Condenser?

NRPLis=LRiVsV CNTPLij sLi[RLRiV


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2. sVNSsNRP yxmnsQo NRPWLigRiV sLRiV a)Bs RWqs yxmnsQo b) FnLRiV=` yxmnsQo

12. What are the advantages and disadvantages of hermetically sealed Compressor overopen type

Advantages:-

1. Lji{mnslLi[Li dZNP[s xmspLjigS s RVLiLiRVsV. 2. RNRPVs aRPLi 3. RNRPVs xqsLi @sxqsLRiLi

4. sWLRiV NRPWLigRiV FsNRPVs rysVLRiQLigS DLiRVsV.

Disadvantages:-

1. sLS*x xqsVLiNSRV

2. NRPLixmsxtsQLRiVs Lji}msLRiV [ RVVsxmsoRV sLigRiV RVLisV NRP [NRP [ZNP[s [ RW

3. Lji{mnslLi[Li [gR i [sV VVNRP {msRsLi sWLRiV \sLiTLigRiVsNRPV xs [ RVVsV.

4. Lji{mnslLi[Li sV yLji [ RVVNRPV sVLji RVV U yLji [ RVVNRPV |qsxmslLi[ yNRPVsV xmsLixmso @sxqsLRiLi.

13. Distinguish between Air cooled Condenser and Water cooled Condenser.

Air cooled Condenser Water cooled Condenser

1.

ks sLSLi xqsVLi sVLji RVV Rs\ZNPsj 1. ks sLSLi NRPxtsQRLRiLi sVLji RVV LkiRV FsNRPVs2. sLS*x LRiV RNRPVs 2. sLS*x LRiV FsNRPVs

3.dsLRiV sVLji RVV \|msxmso @sxqsLRiLi [RV 3. ds N][xqsLi \|msxmso @sxqsLRiLi

4. { sV s=xmnsLRiV [ RVV ZNPFyzqs RNRPVs 4. { sV s=xmnsLRiV [ RVV ZNPFyzqs FsNRPVs

5. RNRPVs ZNPFyzqs FyLi [Dx msWgjiLiRVLRiV 5. FsNRPVs ZNPFyzqs FyLi [Dx msWgjiLiRVLRiV

6. gS TzqsWxtsQsV IZNP[s RLigS DLiRRV 6. ds TzqsWxtsQsV IZNP[s RLigS DLiRVsV7. NRPL][sV xmssLi DLiRRV sVLji RVV FnLigRiV RNRPVs 7. \|msxmsoV [sVss RVxmsV xmsVsV sVLji RVV FnLigRiV

FsNRPVs

8. |mnsNTP= FsNRPVs 8. |mnsNTP= [RV


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14. Write advantages and limitations of Capillary tubes.

Advantages of Capillary tube:-

1. ks sLSLi xqsVLi sVLji RVV sLS*x @sxqsLRiLi [RV.

2. NRPLi|msxtsQLRiV AgjisxmsoRV {msRsLi xqssWs\sVsLiR sLRiNRPV LjizmnslLiLi, FsNRPVs {msRsLi \sxmso sVLi RNRPVs

{msRsLi \sxmsoNTPsLRiLiRLRisVVgS Fn @sosV.

3. NRPLi|msxtsQLRiVs ryLRiV [ RVsNTP RNRPVs ryLjiLigRiV LRiV @sxqsLRiLi.

4. ZNP[{msLRiV WVsV DxmsWgjiLiRV zqsxqssV sNRPV Lji{qssLRiV @sxqsLRiLi [RV.

5. sVgjis T\sqs NRPs ks LkiRV y RNRPVs.

Limitations:-

1. Lji{mnslLi[Li [sV sVLji RVV R L`i sVLi {mnsgS DLiy [s][WV sV ][N`P [zqs Lji{mnslLi[Li FnAgjiFsosV.

2. sTRVRVNRPVNRPV FsNRPVs gRiV\lLis ][ Bj DxmsWgjiLiRLSRV.

15. Explain the working of Hermetically sealed Compressor used in Refrigeration system with

sketch.

NRPLi|msxtsQLRiV sVLji RVV sWLRiVs IZNP[x LigRiVsLiRV DLiT xmspLjigS yysLRiLisVLi {qs [ RVTDsQLiVV[yss

|LjiNRP {qsNR PLi|msxtsQLRiV @s@LiRVLRiV.

RNRPVs {msRsLigRi Lji{mnslLi[Li yxmsLRiV, FsyxmslLi[LRiV sVLi xqsORPQsV \sV y*LS ZNP[zqsLigRiV[NTP xmss[bPLiRVsV.Bj

zqsLiRLRiV NRPV sLRiNRPV LSRV. zqsLiRLRiV LjiLiVgS sVLji RVV ZNP[LiN`P uyxmnsQo sVsogS DLiRVsV. FsNTPQNPsWLRiV

VVNRP uyxmnsQoNTP |msqs @gRiVsV [ RVT ks }qsLRiV, ZNP[zqsLigi [zqs LRiLigS DLiRVsV. sWLRiV \sLiTLigRiV,ZNP[zqsLig`i [NTP

xmss[bPLiRV Rs Lji{mnslLi[Li yxmsLRiVNTP s[LRiVgS FsNP= Fn [ RVT DLiRVsV sVLji RVV C Lji{mnslLi[Li yxmsLRiVNRPLi|msxtsQLRiV


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VVNRP xqsORPQsV rN`P sLiRV NRPLi|msxtsQLRiV[NTP xmss[bPLiRVsV. NRPLi|msxtsQsV @LiVVs RLRiVyR yxmsLRiV sVxmnsLRiV[NTPTyLji

[ RVT @NRPT sVLiT FsNRPVs {msRsLigRi yxmsLRiV NRPLiRs=LRiV WV [NTP xmsLixmsRVsV.

|LjiNRP {qsNR PLi|msxtsQLRiVsV a)Lji{mnslLi[LRiV b) NRPWLRiV c) yLRiV NRPWLRiV d) sLi][\ xmso FsLiVVLRiV

NRPLiUxtsQsLRiVsLiRV DxmsWgjiLiRVLRiV.

15. Explain briefly about Air cooled Condensers.

Air cooled NRPLis=LRiV sLiRV Air sV NRPWLigRiV dsVT RVLigS DxmsWgjiLiRVLRiV. NRPLis=LRiV RV VgRixqslLi[xqsVsVLi Air

NRPs[*QORPQsV ss { s=xmnsLRiV LRiVgRiVsV. Bs lLiLiRV LRiNSV. 1. yRVLRi gS gS][R xmsLRiVRV NRPLis=LRiV

2. FnLRiV=` gS gS][R xmsLRiVRV NRPLis=LRiV

yRVLRi gS gS][R xmsLRiVRV NRPLis=LRiV RVLiRV gS xqsLRiV[xtsQsV RNRPVs sVV RLi[D sxmsoRVNRPLis=LigRiV xqslLi[xqsV

GLji RW FsNRPVs NSy. B j yysLRiLi[s gS [NRP yRVLRi gS gS][NR PW [ RVVsV. BjLji{mnslLi[LRiV ssVNRP

@sVLRiT DLiRVsV. dss ] sVzqsN`P Lji{mnslLi[LRiV sVLji RVV Ums {mnsLRiV sLiRV DxmsWgjiLiRVLRiV.FnLRiV=` gS gS][R xmsLRiVRV NRPLis=LRiV sLiRV FsNRPVs {msRsLigRi Lji{mnslLi[Li s[xmsLRiV NRPLi|msxtsQLRiV sVLi

NRPLis=LRiV VVNRP \|msgRiLisNRPV [LRiVsV. zmnss WV[NTP s[xmsLRiV Fn @gRiVsV. sWLRiV ss %Tlgi[ fan C\|msxmso

dsVRNRPV gSs xmsLizmsLiRVsV. zmnss=, WV VVNRP xqslLi[xqsV GLji RWsV |msLiRVsV, ysss NRPWLigRiV FsNRPVs

lLi[[ry RsVgRiVsV. s[xmsLRiV NRPWLigRiV @LiVV RsLRiWxmsLi[Lk izqssLRiV LiNRPVsNRPV [LRiVsV. C NRPWLigRiV FsNRPVs

rysVLRiQLi NRPgji DLiRVsV. dss yLRiV NRPWLRiV, NRPWLRiV sVLji RVV FsLiVVLRiV NRPLiUxtsQsLRiV[ryyLRiLigS

DxmsWgjiLiRVLRiV.

16. Explain the working of Shell and tube condenser.


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|tsQ sVLji RVV WV NRPLiRs=LRiV zqsLiTNRP |tsQ NRPgji, ks[@ jNRP xqsLi[x qssWLiRLRiLigS WVVzmns

[ RVT, WVNRPV lLiLiRV sLRiRVLiRV WV {tsQ= NRPsNRPV [ RVT DLiRVsV. C WVV {qsV[y

NSxmsLRiV][R RWLRiV[ RVRVsV. C WVV ryyLRiLigS zmnss= [ RVT DLiT xqslLi[xqsV GLji RWsV|msLiRVsV.

|tsQ NTPLij \sxmso NRPWLigRiV yLRiV xmss[bPLi NTPLij \sxmsogRi WV gRiVLiy |tsQ lLiLiRs sLRi sLRiNRPV Fn

@gRiVsV. Bj \|msNTP[ \|msgRiLi[gRi WV gRiVLiy slLi[NRP jaRP[x ms RWLi sLjigS NRPLiRs=LRiVVVNRP

@so sVLi RVNRPV sRVsV. NS WVRVLiRV yLRiV |tsQ F~Rso NRPLi[lLi Lixmsoxms RWLi

s[T Lji{mnslLiLi sVLiT {VsV gRizLi yLRiV DugRiR |msLRiVgRiVsV. B[x qssV RVLi[Lj i{mnslLiLi s[xmsLRiV\|ms

gRiLi[x mss[bPLi NTPLij \sxmsoNTP N][V yLRiV WV xqslLi[xqsVsV yNRPVRW Fn @gRiVsV. yLRiV ssLji{mnslLiLi

NRPW @LiVV NRPLisV= @gRiVsV. NRPLiRs=LRiV 2sVLi 1000sV ZNPFyzqs[ sVgRiVsV. NRPLis[=xtsQsV xmspLji

@LiVVs Lji{mnslLiLi NTPLijNTP s {tsQ VVNRP NTPLij gRiLi[DLiT @j NTP*` Lji{qssLRiVgS xmss[ RVVsV.

17. Explain Shell and Coil type Condenser.

|tsQ sVLji RVV N][ RVV LRiNRPLi NRPLi[s=LRiVs RNRPVs {msRsLi sVLji RVV RNRPVs ZNPFyzqs y RVLiRVDxmsWgjiLiRVLRiV.

BLiRV[yLR iVs xqsLRiV[ [ RVsNTP N][ RVV NRPgjis |tsQ DLi RVsV. |tsQ sLRiV sWLRisNTP dsVDLiRRV.

N][ RVV VVNRPyLRiV \|qsRVsV ZNPsVNRP= ] NUPs [ RVVR VLRiV.N][ RVV sLiRV dZNP[ DsQLiVV[sVVR Li N][ RVVsV

sWLS. dss aRPVsVLiVVs dsLRiV LiRV][ y[RLRiV. FsLiRVNRPLi[k s N][ RVVsV aRPVLigS aRPVLi[ RV[sVV.

ksRVLiRV yLRiV NTPLiRVgS xmss[bPLi, N][ RVV y*LS \|msNTP xmsxqsLjiLiRVsV. NRPLixmsxtsQLRiVsVLi s[xmsLRiVLjizmnslLiLi |tsQ


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RVLi][

y gRiVLiy yLRiV, LjizmnslLiLi N][ RVV xqslLi[xqsV\|ms }qsQ [ RVT N][ RVV \|ms xqsss yLRiVxqslLi[xqsVF~LRi

GLRiLRiVRVsV. LjizmnslLiLi sVVR yLRiVsNRPV { sV LjiNRPV[ RVVsV, yLRiV C { sV gS[NTPyLRiV

FsyxmslLi[xtsQsVgS gS LjiNRPV[ RVVsV. gS FsNRPVs x sVT][R VNRPV sRVsV. C NRPLi[s=LRiV yLRiVNRPWV

NRPLi[s=LRiV sVLji RVV NRPWLigRiVsLRiV zmss=xms sV NRPzms DxmsWgjiLiRVN]sVsV. gS LjizmnslLiLi sVLi{VsV

RVNRPV dxqsVZNPsV. ksss s[xmsLRiV LjizmnslLiLi NTP*` gS sWLRiVsV. TyLji gS][FyV yLR iVFyLjiNRP= RVNRPV

FNRPVLiy }qsQ |RL`i \|msgRiLi[Fs sVs[LRiV @sVLRiTDLiRVsV. yLRiV LiNRPV NTPLiR NRPNRPV @LiVVsyLRiVs

xmsLixmso xqsxRVLi][x qsLRiVQ[ [ RVVR VLRiV. FsyxmslLi[xtsQsV ss N]LiR sVVRLi[yLR iV sxtsQFsosV.@sxqsLRi\sVsxmsVRV

NSszqss yLRiV s NTP yL RiVs sLi|msRLRiV.20. Explain the working of natural draft cooling tower.

C NRPWLigRiV sLRiV J|mss gS [NRP LigRiV LRiWmns \|ms [ZNP [ RVT DLiRVsV.

NRPLi[s=LRiV sVLi yLRiVsV NRPWLigRiV sLRiV \|msNTP xmsLixmso [ RVVR VLRiV. @NRPR }qsQ y= y*LS}qsQ

[ RVRVsV. s[RVLRi NRPs[*QORPQsV ss sLRiV s[RVLRi gS xqsLRiVQ[ @LiVV yLRiV FyLjiNRP= ][NSLiNRPV

@gRiVsV. yLRiVsVLi NRPW gSNTP { s=xmnsLRiV LRiVgRiVsV. NRPW @LiVVs yLRiV sLRiV NTPLijgRiLi[NR P[NRPV

[ RVRVsV. C NRPW yLRiV LjizmnslLi[xtsQsV FyLi VVNRP NRPLi[s=LRiVNTP xqs|m^s [ RVT sVLRi sVLRixqsLRiVQ[

@sosV.


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21. Explain working of mechanical draft cooling tower.

kss N][ \xmso NRPWLigRiV sLRiV @s @LiRVLRiV. CxmsR[ sLRiVgRiVLiy gS sVNSsNRP gS FnLRiV=

[ RVRVsV. B s lLiLiRV LRiNSV @s 1. FnLRiV=RV yxmnsQo NRPWLigRiV sLRiV 2. Bs RWxqsV yxmnsQo NRPWLigRiVsLRiV

1. FnLRiV=RV yxmnsQo \xmso NRPWLigRiV sLRiV : -C sLRiV VVNRP yV= @s xmspLjigS NRP [NRP sV ][yVgRiV \sxmso

N][ [ RVRVsV. NRPLi[s=LRiVsVLi yLRiVsV sLRiV\|msNTP }qsQ [ RVVsV. sLRiV NTPLiRsVLi gSs FnysVxqsxRVLi][

FnLRiV= [ RVVRVLRiV. yLRiV NRPW @LiVVs RLRiVyR NRPNRPV [ RVVR VLRiV.

FnysV NTPLiR }qsQ Fs sVs[LRiVs DxmsWgjiLiRVLRiV. ksss NUPsLigRiV @LiVVs RLRiVyR gS NTPLiRNRPV ssVsVLji RVV @jNRP TxmnsQo suysV sL][jLiRVsV. ks NTPLiRVgS }qsQ y= gjiLixmsT y y*LRi yLRiVxtsQsLRiV

LRiWxmsLi[R VNRPV s NRPW @gRiVsV.

2. Bs RWxqsV yxmnsQo NRPWLigRiV sLRiV :- Bs RWxqsV yxmnsQo NRPWLigRiV sLRiVsLiRV \|mss Fs sVs[LRiV |msTy= gRiVLiy yLRiV NTPLiRNRPV xmsRVsV. NTPLij gRiLi[Fn ysV DLiRVsV. yLRiV xtsQsLRiV LRiWxmsLi[ s

@RVgRiVs

gjiLis FnysV ss NRPW @gRiVsV. C yLRiV NRPLi[s=LRiV[NTP |qsLixmnsQogRi xmsLixmso y*LS xmsLixmsRVsV.

22. Explain various types of Evaporaters.

ksRVLiRV FsNP= }mss=sV yV*ss LjizmnslLiLi xmsxqsLjiLiRVsV. VV INRP sLRisVLi LjizmnslLiLixmss[bPLiRVsV,

lLiLiRs sLRi xqsORPQsV\sVNRPV NRPVxmsRVsV. FsyxmslLi[LRiV NTP*` sVLji RVV s[xmsLRiV LjizmnslLiLi sVaRPsVLi][sLixmsT DLiRVsV

FsyxmslLi[LRiV y*LS NTP*` LjizmnslLiLi ssxmsoRV FsNRPVs NTP*` sxms\lLi @sosV, NS FsyxmslLi[LRiVsVLiLjizmnslLiLi

\Q }qs [R VNRPV sRVsV. FsyxmslLi[LRiV[NTP xmss[bPLiRV LjizmnslLiLi xmsyxs NRPLi[V [ RVsNTP{mnsRLRiV V


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@sVLRiTDLiRVsV.

a) xmns` \xmso FsyxmslLi[LRiV :- C FsyxmslLi[LRiV[Lj izmnslLiLi NTP*` s zqsLRiLigS DLiRVsV. ks N][xqsLi FnyV*s

yLigRiV T\sqs gS DxmsWgjiLiRVLRiV. Bj |tsQ s NRPgji Fn yV* y*LS NTP*` LjizmnslLiLi ks[NTP

sRVsV. |tsQN][ RVV VVNRP ms sVLji RVV sV NTP NRPVxmsRVsV. |tsQ VVNRP NTPLij gRiLi sVLi NTP*` gS sss N][ RVV

WV[NTP xmss[bPLiRVsV. xmsLjixqsLSsVLi { sV gRizLi C NTP*` FsyxmslLi[ @gRiVsV. NTP*` s[xmsLRiVsVaRPsVLi

N][ RVV sVLi Ljigji |tsQ sNRPV [LRiVsV. |tsQ sLiRV NTP*` sVLji RVV s[xmsLRiV s[LRiV[ RVRVsV. s[xmsLRiV |tsQ

VVNRP\|msgRiLi[Fn ytsQ yLiL RiVsLiRV NRPNRPV[ RVT @NRPTsVLiT xqsORPQsV\sV y*LRi NRPLixmsxqsLRiV[NTP xmss[bPLiRVsV.C

FsyxmslLi[LRiV lLi[zms` NRPWLigRiV NRPVgRi[ RVVsV sVLji RVV k ss FsNRPVs ZNPFyzqsgRi FsNRPWms sVLi [DxmsWgjiLiRVLRiV.

[L`i WV FsyxmslLi[LRiV :- C FsyxmslLi[LRiVsLiRV {qsV [y NSxmsLRiV WLigRiV DLiRVsV. {qsV

WVsV |msRFsyxmslLi[LRiVsLiRV sVLji RVV NSxmsLRiV WVsV s FsyxmslLi[LRiVsLiRV DxmsWgjiLiRVLRiV. {mns RWsLjizmnslLiLi gS

DxmsWgjiLiRV yLRiV LRiV, Hqs R RWLji FyLiVLiRV DxmsWgjiLiRVLRiV. dss 00C NRPs RNRPVsDugRiRsV sVLiVVs

s [ RVV][ DxmsWgjiLiRVLRiV.

zmnss WV FsyxmslLi[LRiV :- dss FsLiVVLRiV NRPLiUxtsQsLigRiV @zmsZNP[xtsQsV sLiRV DxmsWgjiLiRVLRiV. N][ RVV= RVVzmnss=

[ RVT FsyxmslLi[LRiV VVNRP xqslLi[xqsV GLji RWsV |msLiRVsV. @zmsZNP[xtsQsV LRiNRPLisV zmnss= sVR sWLRiVsV. ks

ss FsxmnsNTPs NRPWLigRiV |msLRiVgRiVsV.


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}msV FsyxmslLi[LRiV :- C FsyxmslLi[LRiVsLiRV }msV\|ms N][ RVV sLigRiV [ RVT DLiRVsV, [y lLiLiRV}msV sVR

N][ RVVsV DLi sLigRiV [ RVT DLiRVsV. ksss WV NRPLiNRPV GLji RW |msLRiVgRiVsV.ksssxmsLjixqsLSsVLi

NTP*` LjizmnslLiLi sNRPV { s=xmnsLRiV lLi[ FsNRPVs DLiRVsV. dss x[sV {mnsLRiV, slLi[ NRPWLRiV, HqsNUPsV

FyLiV RVLiRV DxmsWgjiLiRVLRiV.

|tsQ sVLji RVV WV FsyxmslLi[LRiV :- C FsyxmslLi[LRiVsLiRV {qsV zqsLiTNRP |tsQ FsNRPVs xqsLi[xqssWLiRLRiLigS

WVsV zmns [ RVT DLiRVsV. ds RVLiRV LigRiV yLRiV [NRP \Qs sV DxmsWgjiLiRVLRiV.B s lLiLiRVLRiNSV.1. xmns` |tsQ sVLji RVV WV LRiNRPLi 2.ysxmns` |tsQ sVLji RVV WV LRiNRPLi

xmns` |tsQ sVLji RVV WV LRiNRPLi FsyxmslLi[LRiV[NR PW [ RVszqss xmnsQo RV` WV gRiVLiy Fn @sosV

sVLji RVV LjizmnslLiLi, WV\ |ms sVLi Fn @sosV. NTP*` LjizmnslLiLi yLRiV sVLi { sV gRizLixmspLjigS

FsyxmslLi[ @sosV. C LjizmnslLiLi NRPLi|msxtsQLRiV [sNTP xqsNP @sosV.

ysxmns` |tsQ sVLji RVV WV LRiNRPLi FsyxmslLi[LRiV sLiRV |mns= GLRiLji { s=xmnsLRiV lLi[ sV@sXj [ RVVsV.

|tsQ sVLji RVV N][ RV FsyxmslLi[LRiV :-ksRVLiRV |tsQ sVLji RVV |NRP N][ RVV DLiRVsV. NRPW[ RVszqss

xmnsQp RV` |tsQ \|ms gRiLi[x mss[bPLi, |tsQ NTPLiR sVLi RVNRPV sRVsV. N][ RVV gRiVLiy LjizmnslLiLi Fn

@sosV.NRPW [ RVszqss xmnsQp RV` N][ RVV][\ lLiNRPV NSLiNRPV @sosV. dss yLRiV NRPWLRiV sVLji RVV 2sVLiT 10sV

ZNPFyzqsgRi s FyLiV RVLiRV DxmsWgjiLiRVLRiV.

WV Bs WV [y RV WV FsyxmslLi[LRiV :-ksRVLiRV lLiLiRV WVV INRP ys[sVLjiVVNRP DLiRVsV


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NRPW [ RVszqss xmnsQp RV` [xms WV y*LRi Fn @sosV. LjizmnslLiLi [xms WV RV }qsqssLiRV Fn

@sosV. Bj { s=xmnsLì sV sVLRiVgRiV xmsLRiRVsV. dss \Lki , slLi[qs sVLji RVV ALiVVV FyLiVRVLiRV

DxmsWgjiLiRVLRiV.

23. Explain any one Expansion device.

1. ZNP{msLji WV:- ZNP{msLji WV INRP N][ RVV [NRP F~RsogS Ds \|mnss WV.ksNTP 0.5 sVLi 2.25sV sV[xms

R RW dsVLRiVgRi y s ALji\|mnsqs DLiRVsV. ks F~Rso 1 sVLi 6 sVLRiV. ksgRiVLiy LjizmnslLiLi FnzqsLRiLigS

DLiRVsV. Bj FsyxmslLi[LRiV gRiVLiy xmsszLiRV LjizmnslLiLi sV NRPLi[V [ RVVsV. dss LRiWsV Fs RVLRiVNRPLiUxtsQLRiVsLiRVDxmsWgjiLiRVLRiV.

ZNP{msLji WV INRP sLRi NRPLis=LRiV VVNRP @so zmnsLì NTP NRPsNRPV [ RVT DLiRVsV. lLiLiRs sLRi

FsyxmslLi[LRiV sNRPV NRPVxmsRVsV. ZNP{msLji WV, LjizmnslLiLi {msRsLisV @jNRP {msRsLisVLi RNRPVs{msRsLisNRPV

RgRiLiRVsV.NRPLis=LRiV sVLi NTP*` LjizmnslLiLi ZNP{msLji WV[sNTP xmss[bPLiRVsV. WVgRiVLiy xmsszLi zmnsORPQsV

ss {msRsLi RgRiVsV

r [ RV` y*:- Bj xtsQ Amns y*. Bj N][ RV sV FsslLî [zqssxmsoRV FsN][QsWgRiN`P N][ RVGNRPV[V

@gRiVsV. AlLi[RLRiV [y xmsLiLRiV N][ RV [xms DLiRVsV. xmsLiLRiV J|mss [NRP N][ @ssNTP |qssV [y zmss RV`

[ RVT DLiRVsV. ksgRiVLiy NRPlLiLiV Fyqs @LiVVsxmsoRV N][ RV FsslLî @sosV. N][ RV VVNRP N][Lì [sWgRiN`P

{mnsV xmsLiLRiVsV ANRPL


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UFsslL^i @LiVV xmsLiLRiV ys xqs*LiR LRiVso ss NTPLiRNRPV Ljigji, zmss y* sV sVWzqss[ RVVsV.

24. Write the differences between open type compressor and sealed unit compressor

J|mss \xmso NRPLixmsxqsLRiV {qsV RVWs NRPLixmsxqsLRiV

1. \|ms sVWsLRiV VV y*LRi NRPLixmsxqsLRiVsV \Qs [ RVVsV 1. FsNTPQNP sWLRiV sVLji RVV NRPLixmsxqsLRiV IZNP[

uyxmnsQo\|ms

\LRiNRPVgS NRPsNP [ RVT ][sV [DDLiR VsV.

2. \|ms sVWsLRiVgS U BLisV,ACsWLRiV [y DC 2. zqsLigji }mns zqs BLiRORPQsV sWLRiVsyRVR VLRiV.

sWLRiV yRVR VLRiV.

3. |qsLixmnsQogRi zqs*` s ryLjiLigRiV \sLiTLig`i s Tqs 3. ks N][xqsLi Lji[sV DxmsWgjiLiRVLRiV.

NRPsNRPV [ RVsNTP DxmsWgjiLiRVLRiV.

4. sWLRiV sVLji RVV NRPLixmsxqsLRiV [qs \|ms sVsogS 4. sWLRiV sVLji RVV NRPLixmsxqsLRiV @|qsLis G F~xtsQsV[

@sVLRiRVsV. \sy @sVLRisRVsV NSs sWLRiV sWRLi \|mss

DLiVLij.

5.sWLRiV sVLji RVV NRPLixmsxqsLRiV rpm slLi[gS DLiRVsV 5.sWLRiV sVLji RVV NRPLixmsxqsLRiV rpm IZNP[gS DLiRVsV

6. NRPLixmsxqsLRiV {qsRVsV xqsLji[ RVsRVsV. 6. NRPLixmsxqsLRiV {qsRVsV xqsLji[ RV[sVV.

25. Write the merits and demerits of Air cooled Condenser

FsLiVVLRiV NRPWV NRPLis=LRiV V

1. sLSLi xqsVVso NRPsVNRP RsNRPgS DLiRVsV 2. sLS*x LRiV RNRPVs

3. G sR\sVs \|msxmso sLRiV @sxqsLRiLi[RV. 4. NRPL][sV xmssLi RNRPVs

5. yLRiVs Tr [ RVLiNRPs gSs Tr [ RVLi xqsVLi 6. |mnsNTP= FsNRPVs

FsLiVVLRiV NRPWV NRPLis=LRiV suyV

1. Bj s \|qs LjizmnslLi[xtsQsV RVWsNRPV sWRs[V xmsLjisVRLi


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5. What is the function of cold storage

LjizmnslLi[xtsQsV y*LS R*LRigS FyR[V ALRixmsyLRisVVsV s*[ RVV yss N][VrlLi[ @s@LiRVLRiV.

6. Define unit of refrigeration

LjizmnslLi[xtsQsV RVWs Ton of LjizmnslLi[xtsQsV

1000ZNP[ Hqs sV 00C sVLi 00C yLRiVgS 24 gRiLi[[ RVsNTP @sxqsLRi\sVs { sV sV


INRP sV LjizmnslLi[xtsQsV = 55KCal/min =210 KJ/min

7. Explain the working of household refrigerator with neat sketch.

]sVzqsN`P LjizmnslLi[LRiV s[xmsLRiV NRPLixmsxtsQsV \|qsNTP \|ms xmss[ RVVsV. ksRVLiRV {mns RWsV12sV LjizmnslLi[Li gS

DxmsWgjiLiRVLRiV. ks xmsyssj AxLRixmsyLRisVVsV s*[ RVsNTP RNRPVs DugRiR }qsqs sNRPVgRi[ RVLi. kss

sVTNRP uyxmsoV, AxqsVxmsRVV, x[, A{mnsxqsVV, [ lLi[LkiV sVVR\s][ DxmsWgjiLiRVLRiV.

]sVzqsN`P LjizmnslLi[LRiV ZNPFyzqs RVVs [xms xmnsVsxmsLjisWLi,kss dLRi[Vx msoRVLRiV. B s 100, 165,200, 300 dLRi ZNPFyzqs[]LR iNRPVsV.]sVzqsN`P LjizmnslLi[LRiV sLiRV xmsys gRisVVV

1. FsyxmslLi[LRiV ({mnsLRiV) 2. FsNRPVsVlLi[LRiV 3. { FsZNP[=QLiLRiV (Lji{qssLRiV)

4. |LjiN`P NRPLixmsxqsLRiV 5. NRPLi[s=LRiV 6. xqs RVsLRiV(R RVLRiV) 7. ZNP[{msLji WV

FsyxmslLi[LRiV sVLi y [zqss LjizmnslLi[Li s[xmsLRiVs NRPLixmsxqsLRiVsLiRV NRPLixmsxqsV[zqs NRPLi[s=LRiVsNRPV sLji

[ RVVsV. RLRiVyR ZNP[{msLji WVsLiRV FsNP= FyLi` @LiVV FsyxmslLi[LRiVsNRPV FyxqsV@gRiVsV. [Li { sVgRizLi

RNRPVs {msRsLi LjizmnslLi[Li FsyxmslLi[ @LiVV FsyxmslLi[LRiV sLiRV LjizmnslLi[LigRiV xmsys NRPVgRi[ RVVsV.

ZNP[s [qs sR |LjiNRP {qsV NRPLixmsxqsLRiV DLiRVsV. NRPLi[s=LRiV gS][R xmsLRiRV N][ RV LRiNRPLi.FsyxmslLi[LRiV

s ZNP[s[ [xms\sxmso xmso[DLiR VsV. FsyxmslLi[LRiV c150C sVLji RVV 90CsVLi 100C DugRiRsV


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NRPVgRi[zqs

LjizmnslLi[Li }qsqs sV sVLiVVs [s [ RVVsV.

{mnsLRiVsVLi RsgS NTPLiRNRPV NRPj sVLji RVV FRNRPQ=s NRPWLigRiV [zqss RLRiVyR s[T gSgS sWLji \|ms\sxmsoNTP

NRPRVsV.LjizmnslLi[Li }qsqs sLiRV Bj sLRiLiRLRiLigS gS NRPRVVsV.{mnsLRiV sVs N][VrlLi[gS DLiRVsV, ks[H qs NRPV V, Hqs NUPsV V, [xmsV,sWLixqsLi, FnsV xmnsQo`= s

s*[ RVVR VLRiV. {mnsLRiVsLiRV DugRiR RLRiryV y*LS NRPLi[V [ RVRVsV. {mnsLRiV NTPLiRVgS LRiV[DLiT

{mnsLRiV[yLR iV yxmso= FsNRPVs[VxtsQsV NSNRPVLiR [ RVVsV.

{mnsLRiV NTPLiR xqsLji[ RV dsVgRi }qs V DLiT xmsLiRV, NRPWLRigSRVV, sLiTs ALRiLi sVVR\ss s*DLiRsNTP dsVgSDLiRVsV. LjizmnslLi[LRiV ][LRiV [xms\sxmso Fsgi [, \Lki s=, }qsDLiRVsV.LjizmnslLi[LRiVs

aRPV\sVs sRVLRiV xqsLjigS sRV xqsLisLiRV xqssWsLigS Ds s[\|ms DLiy. RL][ryV, ][LRiVzqs*, \xmnsLiORPQsV

N`P [ RW. LjizmnslLi[LRiV N][xqsLi |qsxmslLi[ gS xmsg`i s NRPVgRi[ RW.

8. Explain the working of Water cooler

yLRiV NRPWLRiV INRP T\sqs ,kss dss NRPW [zqs 70CsVLi130C DugRiR sR xqs|m^s [ RVsNTPDxmsWgjiLiRVLRiV. B slLiLiRV LRiNSV 1. rlLi[ \xmso yLRiV NRPWLRiV 2. Bs rys [s RVqs [y [ms yL RiV NRPWLRiV

rlLi[ \xmso yL RiV NRPWLRiV sLiRV yLRiV rlLi[ LiNRPV RVW NRPWLigRiV N][ RVV RV T DLiRVsV

sVLji RVV FsxmsoRV LiNRPVsLiRV N][V yLRiV LiRVsV.

Bs rys [s RVqs [y [ms yLRiV NRPWLRiV sLiRV \|msxmso \sV RV W NRPWLigRiV N][ RVV RVT DLiRVsV.

NSszqss DugRiRNTP yL RiV NRPW [ RVT LiNRPVsV [LRiVsV.

yLRiV NRPWLRiV sLiRV xmsys gRisVVV


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1. yLRiV rlLi[ LiNRPV 2. NRPLixmsxqsLRiV 3. NRPLi[s=LRiV

4. FsyxmslLi[LRiV 5. RL][ryV 6. yLRiV Bs \|msxmso

7.N][V yLRiV @so 8. Bs xqsV[xtsQsV 9. s[xqsV yLRiV @so

10. { FsN`P= [LiLRiV 11. }qs RVsLRiV 12. ZNP[zmsLji WV

yLRiV NRPWLRiV sLiRV yLRiV rlLi[ LiNRPV DLiT ds][sLix msRVsV. Fn y* xqsxRVLi][yLR iVs

zqsLRiLigS sVLiVVs s @gRiVsV. LiNRPV RV W Bs xqsV[xtsQsV DLiT, RVW GsR\sVs { s=xmnsLRiVLRigRiNRPVLiy

[ RVVsV. ksRVLiRV s[xmsLRiV NRPLixmsxqssV zqsxqssV sVLji RVV zmns RWsV 12 LjizmnslLi[Li gS DxmsWgjiLiRVLRiV.FsNRPVs {msRsLi

sVLji RVV DugRiRgRi s[xmsLRiV LjizmnslLi[Li NRPLis=LRiV[NTP xmss[bPLi @NRPR NTP*` LjizmnslLi[Li gS sWLRiVsV.}qs RVsLRiV

y*LS C NTP*` LjizmnslLi[Li ZNP[zmsLji WV[sNTP xmss[bPLi, xqsORPQsV \sV[gRi { FsN`P= [LiLRiVsNRPV{VsV

BRVsV.ZNP[zmsLji WVsLiRV NTP*` LjizmnslLi[Li FsNP= FyLiRV @LiVV ks {msRsLi RgRiVsV.

rlLi[ LiNRPV RVWgRi FsyxmslLi[LRiV N][ RVV y*LS RNRPVs {msRsLi sVLji RVV R NRPVs DugRiR gRiLjizmnslLi[Li xmsxqsLjiLi, yLRiV sVLi {VsV gRizLi FsyxmslLi[V @gRiVsV. C sRLigS rlLi[ LiNRPV[syLRiV

NRPW @gRiVsV. LiNRPV[s yLRiV DugRiRsV s RVLiRsNTP RL][ ryV DLiRVsV. FsyxmslLi[LRiV sVLis[xmsLRiV

LjizmnslLi[Li NRPLixmsxqsLRiVsNRPV [Lji @NRPR FsNRPVs {msRsLi sVLji RVV DugRiRNTP NRPLixmsxqsV [ RVT @s

NRPLis=LRiVsV [Lji\|qsNTP xmspLji@gR iVsV.

9. Explain the working of Ice plant

yLRiVs NRPWLigRiV [ RVLi y*LS Hqs sV R RWLRiV [ RVVR VLRiV. Bj LiNRPVsV NRPgji DLiT BsxqsV[LigRiV


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sVLji RVV][B s xqsV[xtsQsV [ RVT DLiRVsV. LiNRPV \|qs Hqs FyLiV ZNPFyzqs\|ms AyLRixmsTDLiRVsV.LiNRPV

\Qs ][NS szqss s sLRiNRPV sLixmsRVsV. Hqs ZNP[s V GI {tsQV][R RWLRiV[ RVRVsV. aRPV\sVs ds][GI ZNP[s

sV sLizms \Qs LiNRPV sLiRV DLiRLRiV. \Qs |qsNRPLiRLji LjizmnslLi[Li gS xmss[ RVVsV. NRPWLigRiV N][ RVV[y

FsyxmslLi[LRiV N][ RVV ZNP[s V RV W RVT @s LjizmnslLi[Li sV ZNP[Lji [ RVVsV.

LiNRPV[gR i \Qs LjizmnslLi[Li ss c100C [ RVVsV. NRPLixmsxqsLRiV gRiVLiy s[xms\lLi @LiVVs LjizmnslLi[Li

xmsszLi @NRPR NRPLixmsxqsV [ RVT NRPLi[s=LRiVNTP sLji [ RVVsV.

NRPLi[s=LRiV sLiRV s[xmsLRiV LjizmnslLi[Li NTP*` gS NRPLisV= [ RVT Lji{qssLRiV LiNRPVsV [LRiVsV. xqs RVsLRiVsVLji RVV FsNP= }mss=sV y* y*LS xmsxqsLjiLi ks {msRsLi RgRiVsV. RNRPVs {msRsLigRi LjizmnslLi[LiFsyxmslLi[LRiV N][ RVV

gRiVLiy xmsxqsLjiLi \Qs sVLi { sV gRizLiRVsV.

C \Qs NRPLi\sLRiV sVLi { sV dzqss[ RVVsV. Bj yLRiV Hqs gS sWLRiVsLiR sLRiNRPV LRiVgRiVsV. ZNP[s V

N]LiR [xmsLRiVgS DLiRLi ss Hqs NRPVsV N]jgS }tsQNP [ RVLi ss xqsVLigS RVNRPVd RVsRVsV.

\Qs LiNRPV sVLi Hqs R RW\lLis RLRiVyR ZNP[s V mns [ RVT yLRiV LiNRPV sLiRV DLi Hqs

NRPVsV xqsVLigS RVNRPV d RVsRVsV.

4. FUNDAMENTALS OF AIR CONDITIONING

1. Define Air conditioning.

NRPLiRxqssV }qsqs NTP @sxqsLRi\sVs sRLigS gSs [zqs DugRiR, xsVT, NUPs sqs sV [zqs xqsLRiVQ[

[ RVV xmsRs FsLiVVL`i NRPLiUxtsQsLigRiV @s @LiRVLRiV.

2. What is meaning of Air Conditioning?

FsLiVVL`i NRPLiUxtsQsLigRiV @Li[Du gRiR, xsVT,gS VVNRP xmspLjis NRPLi[V [zqs NRPLiRxqssV }qsqsVVNRP


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@sxqsLSsV dsV @sLi.

DugRiRsV NRPLi[V [ RVLi @Li[x sVsV NRPLiFnLRiV N][xqsLi DugRiRs sVLiVVs [s [ RVLi,bdPyNSLi

DugRiRs |msLiRLi, s[xqssNSLi DugRiRs RgjiLiRLi .

xsVTs NRPLi[V [ RVLi @Li[gS[ gR i [sV aSys |msLiRLi [yRgjiLiRLi.bdPyNSLisLiRV

[sV aSys |msLiRLi ,s[xqssNSLi[R gjiLiRLi.

gS VVNRP NUPs sqs @Li [gS VVNR P xqs*RRsV, RxqsV sVLji RVV sVgjis xmssNTPLSs ys ]gjiLi|msLiRLi.

gS VVNRP TzqsWxtsQsV @Li[x qs*RQ\sVs gSs gRij[sNTP xqsLRiVQ[ [ RVLi.

3. Write the classification of Air Conditioing system.

FsLiVVLì NRPLiUxtsQsLigRiV zqsxqssV sV C NTPLij sRLigS sLi[RLRiV.

1. @sxqsLRiLRiLisV a) NRPLixmnsLRiV FsLiVVLì NRPLiUxtsQsLigRiV zqsxqssV b) BLiR{qs RV FsLiVVLì NRPLiUxtsQsLigRiV zqsxqssV

2. xqsLisR=LRiLi[{qs sV a)sLiLRiV FsLiVVLì NRPLiUxtsQsLigRiV zqsxqssV b) xqssVLRiV FsLiVVLì NRPLiUxtsQsLigRiV zqsxqssV

c) xqsLisR=LRiLi@Liy FsLiVVLì NRPLiUxtsQsLigRiV zqsxqssV

3. FsNRPWms sVLi @sVLjiNRPsV a) RVWsLji FsLiVVLì NRPLiUxtsQsLigRiV zqsxqssV b) |qsLi FsLiVVLì NRPLiUxtsQsLigRiVzqsxqssV

4. What is Dry air?

sRs, ANTP=sV sVLji RVV RNRPVs aSRLi sVgjis gSxqsV NRPgjis sVaRPsWs \Q FsLiVVLRiV @s @LiRVLRiV.

5. What is moist air?

\Q FsLiVVLRiV sVLji RVV yLRiV s[xmsLRiV sVaRPsWs moist air @s @LiRVLRiV. yLRiV s[xmsLRiV VVNRP NS*LigS VVNRP

DugRiR \|ms AyLRixmsRVsV.

6. Define DBT(Dry Bulb Temperature).


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ryyLRi RLS dsVLRiV][ measure [ RVV DugRiRsV Dry Bulb Temperature @s @LiRVLRiV.xsVsVNRPLixmnsLRiV

VVNRP DBT 250C.

7. Define WBT(Wet Bulb Temperature).

ryyLRi RLS dsVLRiV gSxqsVNTP RTgRiVR RV measure [ RVV DugRiRsV Wet Bulb Temperature @s@LiRVLRiV.

8. What is DPT(Dew point Temperature).

gS saturation F~Li[Du gRiRsV Dew Bulb Temperature @s @LiRVLRiV.

9. Define Humidity.

yysLRiLi[s gS[sVaR P\sVs yL RiV s[xmsLRiVs Humidity @s @LiRVLRiV.

10. Define Absolute humidity.

gS[D s @xqs\s yLRiV s[xmsLRiV NS*Lis Absolute humidity@s @LiRVLRiV.

11.What is Psychrometry?

yysLRiLi[s gS RVLiRV Ds ds AsLji VVNRP xmssLRissV RV[ RVV \|qssV=sV \|qsN][sV @s@LiRVLRiV.

12.Define Relative humidity(RH).

RH=Weight of water vapour present in a volume of air at t0C/Weight of water vapour requires

to

saturate the same volume of air at t0C.

5. AIR CONDITIONING EQUIPMENT

1. List out the Air Conditiong equipment.

FsLiVVL`i NRPLiUxtsQsV sLiRV FsNRPVms sVLiV

1. FnysV sVLji RVV [ RVLRiV 2. RN`PQ= 3.FsLiVVL`i zmnsLRiV= 4. RxqsV NRPNRPLRiV=

5.{LigRiV sVLji RVV NRPWLigRiV N][ RVV= 6. gjiV= sVLji RVV LjixqsLRiV=


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7. x sVT\|mnsLì= sVLji RVV TxsVT\|mnsLì= 8. FsLiVVLRiV T{qsWxtsQsV zqsxqssV NTP @sxqsLRi\sVs FsNRPVms sVLiV2. State the function of the Fan.

FnysV VVNRP sj, FsLiVVLì NRPLiUxtsQsLigRiV FyLiV[FsLiVVL` i xqsLRiV[xtsQs [ RVLi. ksss gS[{msR sLi|msLRiVgRiVsV

sVLji RVV LRiWsV sNRPV NSszqss lLi[ [ sVLji RVV {qsRV[x msLizms sVLiVVs [s [ RVVsV.

3.Write the difference between Axial fan and Centrifugal fan.

RWNTP=RV FnysV |qsLixmnsQogRi FnysV

1. Fn lLi[V FsNRPVs 1. Fn lLi[V sj sVLji RVV dsVT RVLi

2. RN`PQ= [NRPVLiy {ms |` sj 2. {ms |` |msRR sVLji RVV dsVT RVLi

3. sLi[xtsQsV, FsgSxqsV FnysV, BLiR{qs RV G.zqs. 3. BLiR{qs RV NSNRPVLiy sLi][\ xmso }msZNPG.zqs

sLiRV DxmsWgjiLiRVLRiV. sLiRV DxmsWgjiLiRVLRiV.

4. Define Duct and write the requirements of the Duct system.

RN`PQ= @s[s FsLiVVLì s Fy}qs }qss. B s FsLiVVLì NRPLiUxtsQsV zqsxqssV sVLi NRPLiRxtsQs FsLiVVLì sV G }qsqs sVNRPLiUxtsQsV

[rysW @NRPTNTP sVLji RVV LRiWsV [y NRPLiUxtsQsV }qsqs sVLi LjiLì FsLiVVLì sV FsLiVVLì NRPLiUxtsQsV FsNRPVmssVLiVNTP

LkiNRPLiUxtsQsV [zqs LkixqsLRiVQ[xtsQsV N][xqsLi dxqsVNRPVsRVsV.

RN`PQ= zqsxqssV VVNRP Lji\ZNPQQ*Li sVLi , zmss ][VNTP RV[zqss lLi[V[FsLiVVL` i FnsV xmsLiFy,LRiVRNRPVsgS

DLiy,RNRPVs xqsLi ANRPsVLiy sVLji RVV aRPLi [ RVNRPWRRV.

5. What is the function of Supply Air outlet.

NRPLiUxtsQsV [zqss gS FsLiVVLì NRPLiUxtsQsV }qsqs sNRPV xqs|m^s FsLiVVLì @so = y*LS xmss[bPLiRVsV.

6. State the classification of Supply Air outlets.

xqs|m^s FsLiVVL ì @so = s C sRLigS ss [ RVVR VLRiV


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1. gji @so = 2. ry TxmnsQpLRiV @so =

3. {qsLigRiV TxmnsQpLRiV @so = 4.|msL][lLi[` {qsLigRiV @so =

7. State the function of Return outlets.

LjiLRiV FsLiVVLì @so = FsgSxqsV FsLiVVLì s LjiLRiV RN`PQ= [sNTP @sVsVLiRVsV.

8. State the function of Filters and Dust Collectors.

zmnsLRiV= sVLji RVV R xqsV NRPNRPLRiV= VVNRP sj NRPLisVsVs[ @LiVVs gSs RLRiVRVgS NUP s [ RVLi.9. What are the various types of filters used in Air conditioning system?

FsLiVVLì NRPLiUxtsQsV zqsxqssV sLiRV DxmsWgjiLiRV zmnsLRiV=

1. \Q zmnsLRiV= 2. sxqsqs zmnsLRiV= 3. s zmnsLRiV= 4. FsNSQsN`P zmnsLRiV=

10. State the function of heating and cooling coin in Air conditioning system?

{LigRiV N][ RVV gS DugRiRsV |msLiRVsV sVLji RVV NRPWLigRiV N][ RVV gS DugRiRsV RgjiLiRVsV.

11. Explain the various types of Axial fans.

Axial Fan( RWNTP= RV FnysV):-ksRVLiRV BLi|msLRiV uyxmnsQoNTP xqssWLiRLRiLigS gS Fn @gRiVsV. dss RNRPVs{msRsLi][

FsNRPVs sVV RLi[gSs x msLizmsLiRVNRPV DxmsWgRiLiRVLRiV. B s 3 LRiNSV1. F|msLRiV FnysV 2. WV RWNTP=RV FnysV 3. s[s RWNTP=RV FnysV

1. F|msLRiV FnysV:- ksRVLiRV F|msLRiV [y TxqsV \xmso dsV DLiT, sWLRiV uyxmnsQoNTP zmns [ RVT sLiLigRiV

LjiLigRiV [y }msV][Ax mslLi[ [ RVRVsV.

F|msLRiV ssVNRP Ds LjiLigRiV, TyLji gSs [N`P Fn NSss*RV. Bj gSs RWNTP=RV jaRP[x msLizmsLiRVsV.

C FnysV RNRPVs {msRsLi NRPVgRi[ RVVNRPV T\s [ RVTss. dss sLi[xtsQsV LRiWLisLiRV,sLigRij[sV,s

sVLji RVV RV LRiWLi[sV R VLRiV N][xqsLi RNRPV sLRiV @sxqsLRiLi [s][ DxmsWgjiLiRVLRiV.

2. WV RWNTP=RV FnysV:-ksRVLiRV TxqsV \xmso dsV [y F|msLRiV sWLRiV][@ [ RVT


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zqsLiRNRP

NRPsLRiV[[ LjiLigRiV\|ms xqsFLRiV [ RVT AxmslLi[ [ RVRVsV.

dsVT RVLi TyLji {msRsLi][FsNR PVs yVsV [gSs x msLizmsLiRVsV. dsV ms sR sRVgS DLiT x sRs

R RW dsVLRiV DLiT IZNP[s R\sVs s[gRiLi NRPgji DLiRVsV. gS zqsLRi Fy` [T yLji @gRiVsV.3. s[s RWNTP=RV FnysV:- Bj WV RWNTP=RV FnysVs @sXj[zqss T\s. Bj zqsLiRNRPNRPsLRiV][

RWNTP=RV \ xmso dsV @` [zqssj NRPgji DLiRVsV. lLiLiRV xmsNRP \lgiRV s[sV= DLiRVsV. Bj G sR\sVsLRiVs=

NRPgji DLiRRV. ks rysVLRiQR FsNRPVs, RNRPVs aRPLi NRPgji DLiRVsV. kss RNRPV zqsxqsLisLiRV Bs ry[ RVVR VLRiV.

12. Explain the Centrifugal fan.

ksRVLiRV [RV= BLi|msLRiV [y L][LRiVNTP zmns [ RVT zqsLRiV ZNP[zqsLigRiVsLiRV L][@gRiVsV.ksRVLiRV gS

BLi|msLRiV[sNTP RWNTP=RV gS xmss[bPLi, |msLji|mnsLji sR lLi[T RV gS TyLji @gRiVsV. dss RNRPV FsLiVVLìNRPLiUxtsQsLigRiV

sLiRV DxmsWgjiLiRVLRiV. ssR AxmslLi[LigRiV {msRsLisLiRV FsLiR sVVRLi[\ss gSs sLji @gRiVsV. INRP Bs gRi

yss RVgSxqsV FnysV @s, lLiLiRV Bs V gRi yss [ RVLRiV @s @LiRVLRiV.

B s FsNRPVs {msRsLi sR gRi xmss[ RVVsV. ds |msLRiFnyLRis= [RV= DxmsWgjiLis yss DLiRVsV.[RV= 3

LRiNSV. 1. [N`P yLRiV [RV= 2. lLi[T RV [RV= 3. FnyLì yLRiV [RV=

1. [N`P yLRiV NRPLì* ` [RV=(Backward curved blades):-ks [RV ms= L][xtsQsV jaRPNTP GyVgRiDLiRVsV. [RV

RWLigji 900 NTP RNRPVs DLiRVsV. B s RNRPVs aRPLi [ RVVsV,rysVLRiQLi 90% NRPLi[FsNR PVs.dss FsLiVVLìNRPLiUxtsQsV

zqsxqssV sLiRV DxmsWgjiLiRVLRiV.


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2. lLi[T RV [y }qs [RV=(Radial or Straight blades):- ks [RV ms= }qs gS DLiT 900 RWLigjiDLiRVsV.

y FsNRPVs {msRsLi,FsNRPVs {qsRV sR xmss[ RVVsV NSs RNRPVs rysVLRiQR NRPgji DLiRVsV.

3. FnyLì yLRiV NRPLì* ` [RV=(Forward curved blades):- ks [RV ms= L] [xtsQsV jaRPNTP GyVgRi

DLiRVsV. [RVRWLigji 900 NRPLi[FsNR PVs DLiRVsV. C [RV rysVLRiQLi 75% . dss sLi][FsLiVVL` i NRPLiUxtsQsV zqsxqssV sLiRV

DxmsWgjiLiRVLRiV.

13. Describe various types of Duct system used to supply conditioned air to outlets.

RNRPV= gSs Fy|qs [ RVVsV. B s 2 LRiNSV.1.xqs|m^s FsLiVVLì @so =

a)gji @so =b)ry TxmnsQpLì @so =c){qsLigRiV TxmnsQpLì @so =

d)|msL][lLi[` {qsLigRiV @so =

2. LjiLRiV FsLiVVLì @so =

a)gji @so =:- gji @s[j G\s J}mssLigRiV y*LS gS Fn @[VysNTP @so NRPsLjiLigRiV. gji= NT@RxqsV

[ RVV Lì gji= DLiT sVso sVLji RVV @RLi s[sV= NRPgji DLiRVsV. ksRVLiRV FsLiVVLì Fns sVsosVLji RVV @RLigS

NRPLi[V [ RVsRVsV.zmnsNRPV=RV Lì gji= sLiRV s[sV=s @RxqsV [ RV[Li, NSs B s }qs RV gS [NRPGyVgS

DLiRVsV. dss \| \|qs` y [ZNP[xtsQsV[Dx msWgjiLiRVLRiV. Bs {qsLigRiV [ZNP[xtsQsVNTP xqsLjiFso. B

s yxmnsQosNRPVgRi

[ RVVsV. gji sVLji RVV [LixmsLRiV NRPzms[yss Lj ixqsLRiV @s @LiRVLRiV.

b)ry TxmnsQpLì @so =:- Bj INRP [NRP @s[NRP ry= sVV RLi F~Rso NRPgji DLiRVsV. dss \| \|qsRVy

[ZNP[xtsQsV[Dx msWgjiLiRVLRiV. dss {qsLigRiVsLiRV Bs ry [ RVVRVLRiV.


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c){qsLigRiV TxmnsQpLì @so =:-B s {qsLigRiVsLiRV sLi [ RVRVsV. xmsys LRiNSV gRiVLiRLi, RRLRiLisVLji RVV

kLRiRRVLRixqsLi }tsQms sLiRV DLiRVsV. B s yLixmsLi= ][zmn s [ RVRVsV. Bj @s[NRP }mnsLjiLigRiV LjiLigRiVV [NRP[ RVLRiV= DLiT

@s[NRP FsLiVVLì Fy}qsqs DLiRVsV.d)|msL][lLi[` {qsLigRiV @so =:- {qsLigRiV\|mss NRPs\|mnss }qsqs sLiRV xqs|m^s |msssV gS kssDxmsWgjiLiRVLRiV. C

@so = |msL][lLi[` }mnsqs NRPgji TyLji FsLiVVLì s G\s @sxqsLRi\sVs \LRiORPQsVNRPV T|mnsNRPV [ RVV FsLiVV`NRPgji DLiRVsV.

Bj IZNP[sR\sVs DugRiR @sxqsLRi\sVs Lì [sV=NTP xqsLjiFsosV.

LjiLRiV FsLiVVLì @so =:- B s LRiWLi }qsqs sLiRV gRi JxmssLigRiV= FsgSxqsV FsLiVVLì s LjiLRiV RNRPV[NTPxmss[bPLiRs

@sVsVLiRVsV.FsLiVVLRiV NRPLiUxtsQsLigRiV xmsLjiNRPLRiLisNRPV zqsxqssV 100% }mnstsQ FsLiVVLRiV N][xqsLi T\sV [ RVTyysLRisNTP Lki

xqsLRiWQ[xtsQsV @sxqsLRi\sVs ][ B s NRPsNRPV [ RVRVsV. B s {qsLigRiV,yV= [NRP FnLRiV sLiRV sLi[ RVRVsV.

@so VVNRP |qsORPQsV LRiWLi \|qs, @sxqsLRi\sVs gS sVVRLi sVLji RVV FsLiVVLRiV TyLji szqs\|ms

AyLRixmsRVsV.

14. Desrcribe the various types of Filters.

zmnsLRiV= sVLji RVV R xqsV NRPNRPLRiV= NRPLisVsVs[ @LiVVs gSs RLRiVRVgS NUP s [ RVNRPV FsLiVVLRiV NRPLiUxtsQsLigRiVzqsxqsLi

sLiRV Bs ry [ RVRVsV.

. FsLiVVLì NRPLiUxtsQsV zqsxqssV sLiRV DxmsWgjiLiRV zmnsLRiV=

1. \Q zmnsLRiV= 2. sxqsqs zmnsLRiV= 3. s zmnsLRiV= 4. FsNSQsN`P zmnsLRiV=

1. \Q zmnsLRiV=:- \Q zmnsLRiV= [y sVNSsNRP zmnsLRiV=s N]LiR \|qsNRPs FsNRPVs \|qs Ds RxqsVFyLjiNRP= s][gjiLiR


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sNTP DxmsWgjiLiRVLRiV. dss \|mnsqs sVLji RV @LiVVs |mns, FnyN`P, NSs,spV [NRP sVN`P zmnsLRiV=][sLjiLiRVLRiV.

NUPs [ RVszqss gS C zmnsLRiV= gRiVLiy FyxqsV @gRiVsV. zmnsLRiV= RsVgRiVLiy FyxqsV @soRVs gSsVLiRxqsV FyLjiNRP=

sV @RVN]sVsV. xmsLRiV yxmsosV ]gjiLiRsNTP zmnsLRiV VVNRP xqslLi[xqsV GLji RW FsNRPVsgS DLiRVsV.zmnsL][gRi RxqsVs

NUP s [ RVsNTP }ms= s RVNRPV dzqs G\y xqsFLRiV][ slLi[NRP jaRP[gR iVLiRLigS zmssLiVV[R xqsVsVVRLi NUP s

@gRiVsV. C zmnsLRiV= F~gRisV ]gjiLiRsNTP @sVNRPWLi NSRV.

2. sxqsqs zmnsLRiV=:- B s EV [y \|mnsLRiV, \sLRiV {qsQs sVV R\s y][sLix msTs sV }mnssV NRPgjiDLiRVsV. CsVLji RVV zqsNUP ALiVVV][N][ [ RVT zmnsL`i y*LS Fn @V gSsVLi RxqsV FyLjiNRP= s xmsVNRPVs@Li

|msVNRPVs DLiRVsV. RxqsV FyLjiNRP= s zmnsLRiV GLji RW sVVysNTP xqssWsLigS TzqsW [ RVVsV.C zmnsLRiV=FsNRPVs

RxqsVs xV [ RVV ZNPFyzqss NRPgji DLiRVsV sVLji RVV RNRPVs sVLiVVs s= @sxqsLRiLi. @LiVVsxmsNTP ds

rysVLRiQLiRNRPVs sVLji RVV LkiRV FsNRPVs. Bs FsNRPVs yysLRi NSVxtsQLi DLi[FyLj iaSsVNRP @sxqsLSNRPV @sVNRPWLi.sxqsqs

zmnsLRiV= 3 LRiNSV.

a) Lki}msxqsV \xmso zmnsLRiV=c Rs\ZNPs sVLji RVV][R RWLRiV[ RVT, N]LiRNSLi DxmsWgjiLisRLRiVyR

FyLRis[ RW.

b) sWsVs NUPsV \xmso zmnsLRiV=c dss aRPVLi [zqs L jigji DxmsWgjiLiRsRVsV. NUP s [zqss zmnsLRiV=s sxqsqs

ALiVVV][N][ [ RVVR VLRiV.

c) A[sWN`P [y |qs NUPQs \xmso zmnsLRiV=c C zmnsLRiV= ALiVVV][N][ [ RVTs NRPLisW RVqs L][VgRi


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@LiRVLRiV.gS VVNRP DugRiR NRPs xqslLi[xqsV DugRiR RNRPVs DsxmsoRV NRPWLigRiV N][ RVV gRiVLiyFsLiVVLRiV Fn

@LiVVsxmsoRV |qss=V NRPWLigRiV LRiVgRiVsV. NRPWLigRiV dsVT RVLigS yLR iV [y \Qs sV |qsNRPLiRLjiLjixmnslLiLi gS

DLiRVsV.

6.APPLICATIONS OF AIR CONDITIONING

1. List out the essential parts of Air cooler.

FsLiVVLRiV NRPWLRiV sLiRV xmsys gRiLiV

1. sWLRiV ][gRi FnysV 2. yLRiV LiNRPV 3. ZNP[s 4. LkixqsLRiWQ[LigRiV xmsLixmso 5. }ms=

2. What are the main features of Air Cooler?

FsLiVVLRiV NRPWLRiV VVNRP xmsys {mnsRLRiV

1. xqsV \sVs T\sV 2. yVgRiV xmsNRP FsLiVVLRiV T}mnsORPQsV zqsxqssV

3. RVWsFnyLi yLRiV TzqsWxtsQsV }ms`= 4. {qsRV NRPLi[V

5. |qsxtsQ so` EV }ms`= 6. A[yLR iV s NRPLi[LRiV7. yLRiV s BLiTZNP[LRiV 8.}qszmns3. What are the main components of Air conditioning system?

FsLiVVLRiV NRPLiUxtsQsV zqsxqssV sLiRV xmsys gRiLiV

1. FsLiVVLRiV Bs [N`P 2. {ms {LRiV 3. zmnsLRiV 4. TxsVT\|mnsL`i

5. xsVT\|mnsL`i 6. {LigRiV N][ RVV 7. LjizmnslLi[xtsQsV zqsxqssV

4.Explain the working of Air cooler?

FsLiVVLRiV NRPWLRiV, FsyxmslLi[s NRPWLigRiV zmss=xms dsVR xmss[ RVVsV. FsLiVVLRiV NRPWLRiV sLiRV sLRiLiRLSRVLigSRTgS Ds

}ms`= y*LS RVsVLi gSs FnysV y [ RVVsV.}ms`= y*LS xmss[bPLiRV gS RT xsVT\|mns`[ RV


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RVsV.NRPWV FsLiVVLRiV LRiWLi[NTP xqsLRiVQ[ [ RVRVsV, @NRPR |qss=V { s gRizLi NRPLixmnsLRiVxmsLjizqss

sVLiVVs [s [ RVVsV.gSsVLi [Li { NRPV xqsLjixmsR { s gRizLi yLRiV FsyxmslLi[ @gRiVsV.ksss gS

RRVsV. dsA sLji gSs[Lji gS VVNRP xsVTs |msLiRVsV. gS |qss=V { s sxtsQFLiVV@Li[sVVR Li

gRi [Li { sV [sVsVLi F~LiRVsV.

FsLiVVLRiV NRPWLRiV sLiRV gRi xmsys gRiLiV

1. sWLRiV ][gRi FnysV 2. yLRiV LiNRPV 3. ZNP[s 4. LkixqsLRiWQ[LigRiV xmsLixmso 5. }ms=

NRPWLRiV VVNRP xqsLixmsos ds][sLi|msR LRiV. NRPWLRiV[@ sVLjis xmsLixmso dss xmnsQo [zqs zmnsLRiV }ms`= \|msNTP

sLRiLiRLRiLigS }qsQ @gRiVsV. zmnsLRiV }ms`= \|mnss so` \|mnsLRiV= [NRP ss[LRiV][R RWLRiV[ RVRVsV.C }ms`=s

xqsLRiVQ[LigRiV yLRiVxmsLixmso RTgS DLiRVsV [ RVVsV. }ms`= s RT[zqss RLRiVyR Ljigji LiNRPV[xmsT sVLRi sVLRi

C dsLRiV Lki xqsLRiVQ[LigRiV @gRiVsV.

RTgS Ds }ms`= y*LS gSs FnysV dxqsVNRPVs yVgRis \sxmso gRi \|qsRV sVLi NRPWV FsLiVVL`i s }qsqs [NTPsLji [ RVVsV. RTgS Ds }ms`= y*LS gS Fyqs @LiVVsxmsoRV @j FsyxmslLi[s NRPWLigRiV zmss=xmsss NRPW

@gRiVsV.}ms`= FsLiVVLRiV zmnsLRiV gRi xmss[ RVVsV. FsLiVVLRiV Fn @[V \LRiORPQs sV NRPWLRiVNTP @sVLji%Ts gji=s @Rqs

[ RVLi y*LS sWLRisRsV. NRPWLRiV gRi xmss[ RVsNTP xqsLisR=LSsNTP INRPryLji }ms`= s sWLS

sVLji RVV@xmsRxmsVRV yLRiV LiNRPVsV aRPVxmsLRiy.

5. Describe the Window air conditioner.

sLi][FsLiVVLR iV NRPLiUxtsQsLRiVs LRiWLi FsLiVVLRiV NRPLiUxtsQsLRiV @s NRPWR @LiRVLRiV.Bj NTPNTP[[ NRP yJ|mssLigRiVsLiRV


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Bs ry [ RVRVsV. Bj s[xmsLRiV NRPLixmsxtsQsV LjixmnslLi[xtsQsV zqsxqssV zmss=xms \|ms xmss[ RVVsV.

sLSLiccBj {qsV yzqsqs NRPgji DLiRVsV.ks sVR[|LR iNRP {qsV NRPLixmsxqsLRiV sWLRiV RVWs zmns[ RVT

DLiRVsV.lLizqsFZNP[LigRiV \xmso NRPLixmsxqsLRiVs ks RVLiRV DxmsWgjiLiRVLRiV.INRP sLRi TyLji \sV,zmnss sVLji RVVWV \xmso

NRPLis=LRiV sVLji RVV LjisWV [y ZNP[xmsLji WVV zmns [ RVT DLiRVsV sVL]NRP sLRi xqsORPQsV\sV, zmnss

sVLji RVV WV \xmso FsyxmslLi[LRiV zmns [ RVT DLiRVsV.LjixmnslLi[xtsQsV zqsxqssV xmspLjigS zmns RWsVc22LjixmnslLiLi ][

yLji [ RVRVsV.

{qsV sWLRiV lLiLiRV \sxmso uyxmnsQo zmns [ RVT DLiRVsV.sWLRiV uyxmnsQoNTP INRP xmsNRPFsyxmslLi[LRiV, ssVNRPgS[ RVLRiV

zmns [ RVT DLiRVsV sVLji RVV lLiLiRs sLRi NRPLis=LRiV, ssVNRPgS yLRiV ryztsQLigRiV LjiLigRiV [y VNRPgjis FnysV

gjiLixmsT DLiRVsV.FsyxmslLi[LRiV NTPLij [NR PLis=LRiVsNRPV LRiLRiV WV][NR PVxmsRVsV.FsLiVVLì sNUPsLigRiV [ RVsNTP

FsyxmslLi[LRiV sVVLiRV FsLiVVLì zmnsLRiV zmns [ RVT DLiRVsV.FsLiVVLRiV NRPLiUxtsQsLRiV sVVLiRV gRiLi sLiRV gjiVzmns

[ RVT FsLiVVLì VVNRP \LRiORPQsV sWLRiVNRPVs[@ sNSaRPLi NRPgji DLiRVsV.

sLjiLigRiVcc ksRVLiRV @so ][LRiV FyLRiV sVLji RVV BLi][LRiV FyLRiV DLiRVsV.BLi][LRiV RVWs LRiWLi [xmsDLiT,@so

][LRiV RVWs y ZNP xqsxRVLi][LR iWLi RV DLiRVsV. BLi][LRiV RVWs sLiRV

zmnsLRiV,FsyxmslLi[LRiV, sWLRiV

][Lj ilgi[Fn ysV sVLji RVV LjixmnslLiLi NRPLi[V DLiT LRiWLi [xms gSs NRPWLigRiV[ RVVsV @so ][LRiVRVWs sLiRV

NRPLixmsxqsLRiV,NRPLi[s=LRiV,sWLRiV ][Lj ilgi[Fn ysV DLiT yysLRiLi[NTP {VsV sRVR [ RVVsV.

NRPLixmsxqsLRiV sVLi FsNRPVs {msRsLi gRi LjixmnslLiLi s[xmsLRiV NRPLi[s=LRiVNTP Fyqs @LiVV @NRPR LjixmnslLiLi NTP*`gS


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sWLji ks [Li { s NRPLi[s=LRiV N][ RV= dsVRVgS Fyqs @[V FsLiVVLì NTP BRVsV.FnysVF1yysLRiLi sVLi

FsLiVVLì s gRizLi NRPLi[s=LRiV N][ RV= y*LS yysLRiLi[NTP xmsLixmsosV.

FnysVF2 LRiWLi sVLi RLì s zmnsLRiV [zqss RLRiVyR FsLiVVLì sV NRPLiUxqssLRiV[NTP dxqsVNRPVs FsyxmslLi[LRiV N]

[ RVVy*LS LRiWLi [NTP xmsLizmsLiRVsV. NRPLi[s=LRiVsVLi NTP*` LjixmnslLiLi, ZNP[zmsLji WV y*LS Fyqs @LiVVRNRPVs {msRsLi

sVLji RVV RNRPVs DugRiR sR FsyxmslLi[LRiV[NTP xmss[bPLiRVsV. FsyxmslLi[LRiV dsVRVgS gS Fyqs @LiVV RNRPVsDugRiR

sVLji RVV Tx sVT\|mns` gS NRPW @gRiVsV. C Tx sVT\|mns` @LiVVs NRPW FsLiVVLì FnysVF2 ss LRiWLi sNRPVxqsLRiV[ @gRiVsV. [LixmsLRiV=D1 sVLji RVV D2 FsLiVVLì xqsLRiV[ @[VsVVys NRPLi[V[ RVVsV.LjixmnslLiLi, FsLiVVLì

sVLi { sV gRiz Li FsyxmslLi[ @LiVV NRPLixmsxqsLRiV[NTP xmss[bPLiRVsV. C sRLigS \|qsNTP sVLRi sVLRi Lji{ms@gRiVsV.

FsyxmslLi[LRiV N][ RVV sLiRV Tx sVT\|mns` @LiVVs FsLiVVLì s yLRiV yms gS [ T1sLiRV }qsNRPLjiLixmsT [T2

NTP \|msxmso y*LRi xmsLixmsRVsV. [ T1[N]LiR sLRiNRPV C NRPNRPV [zqss yLRiV A sLji @LiVV NRPLixmsxqsLRiV sVLji RVVNRPLi[s=LRiVs

NRPW [ RVVsV sLjigS RVNRPV sRVR [ RVRVsV.

6.Write the differences between Window air conditioner and Split air conditioner

sLi][FsLiVVLR iV NRPLiUxqssLRiV zqs FsLiVVLRiV NRPLiUxqssLRiV

1.Bj IZNP[ R VWs gS DLiT, IZNP[[ qs }ms sNRPV NRPWLigRiV 1.Bj lLiLiRV slLi[*LRiV RVWs sV NRPgjislLi[*LRiV[qs }ms

sVLji RVV NRPLi[s=LigRiV RVWs zmns [ RVRVsV. sNRPV NRPWLigRiV sVLji RVV NRPLi[s=LigRiV RVWs zmns

[ RVRVsV.

2. Bj lLiLiRV uyxmnsQoV gRi IZNP[sWLR iV NRPgji DLiT uyxmnsQo 2.Bj lLiLiRV sWLRiV NRPgji DLiRVsV.INRP


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[ RVLRiVNTP,

NRPV INRP sLRi [ RVLRiV sVLji RVV lLiLiRs sLRi NRPLi[s=LRiV lLiLiRsj NRPLi[s=LRiV FnysV sWLRiV.

FnysV DLiRVsV.

3. Bj gRij[s NTPNTP sLiRV Bs ry [ RVRVsV. 3. kss gRij[FsNR PQ\s Bs ry [ RVsRVsV.

4. Bj xmss [ RVVsxmsoRV N]jgS aRPLi sRVsV. 4. Bj aRPLi [NRPVLiy xmss [ RVVsV.

5. zqs FsLiVVLRiV NRPLiUxqssLRiV NRPs Rs\ZNPsj 5. sLi][FsLiVVLR iV NRPLiUxqssLRiV NRPs LkiRV FsNRPVs

6. RNRPVs NSxmsLRiV WV yRR VsV 6. FsNRPVs NSxmsLRiV WV @sxqsLRiLi

6. Describe briefly about Split air conditioner.

zqs FsLiVVLRiV NRPLiUxqssLRiV sLiRV @so ][LRiV sVLji RVV BLi][LRiV @sV lLiLiRV RVWsVgS s[LRiV[ RVRVsV.BLi][LRiV

RVWs sLiRV FsyxmslLi[LRiV, [ RVLRiV, FsLiVVLRiV zmnsLRiV, gjiV= sVVR\ss DLiT [xms Bs ry[ RVRVsV.Bj

{qsLigRiV sVLiT s[T [y g][R\|ms gjiLixmsT [y s[\|ms @sVLRiT DLiRVsV.

@so ][LRiV RVWs sLiRV NRPLixmsxqsLRiV,FsLiVVLRiV NRPWV NRPLi[s=LRiV,FnysV NRPgji DLiT LRiWLi RV Bs ry[ RV

RVsV.@so ][LRiV sVLji RVV BLi][LRiV RVWsV sVRgRi RWLRiLi ryRQ\sVsLiR sLRiNRPV RgRiLRigS DLiy.RWLRiLi

FsNRPVQ\s[x qsORPQsV sVLji RVV NRP*` \sV RVLiRV {msRsLi yxmso |msLRiVgRiVsV.

7. SERVICING AND MAINTENANCE OF REFRIGERATION & AIR CONDITIONING EQUIPMENT

1.What are the various symptons of gas shortage in the system?

zqsxqssV sLiRV gSxqsV uylLi[ DsxmsoRV NRPszmsLi[zqsLix mssV=

1.FsNRPVms sVLi sLiRV xqsLjixmsR NRPWLigRiV [NRP FsLi 2. NRPLixmsxqsLRiV sWLRiV RLRiRVgS ms @sLi

3. FsNRPVs xmssLRiV dxqsVN][sLi 4. xqsORPQsV {msRsLi RNRPVs

5. NRPLixmsxqsLRiV FyLRiVV @jNRPLigS sNRPLi 6. zqsxqssV sLiRV d ZNP[ DLiRLi


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2. State the maintenance of Refrigeration system

xms L][ [ RVszqss sLRi*xc

1. @s gRisVVV aRPLi sVLji RVV \s[x tsQsV [Rs N`P [zqs sLS LjiLiRVN][y.

2. |qsORPQsV,TyLji sVLji RVV ALiVVV {msRys .N`P [ RW.

xms yLRiLi [ RVszqss sLRi*xc

1. @s xmsys sWLRi[LR isLigRiV NRPlLiLiVsV N`P [ RW.

2. FsLiVVLRiV NRPWV NRPLi[s=LRiVs N`P [zqs GsR\sVs @RLiNTP [Rs sLSLjiLiRVN][y.

xms s [ RVszqss sLRi*xc

1. @s VV xqs\lLis


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2. FsLiVVLRiV NRPWV NRPLi[s=LRiVs N`P [zqs GsR\sVs @RLiNTP [Rs sLSLjiLiRVN][y.

3. FsLiVVLRiV zmnsLRiV s N`P [zqs aRPVLi [ RVLi [y @sxqsLRi\sV[ sWLji s[ RW.

4. gji sVLji RVV zmnsLRiVsVLi s[ FsLiVVLRiV VVNRP NRPLiTxtsQsVs N`P [ RW.

xms sVWRV sNRPV [ RVszqss sLRi*xc

1. GsR\sVs ZNP[ [NRPVLiy zmnss ` { FsNP= [LiLRiV xqslLi[xqsVs N`P [ RW.

2. FnysV sVLji RVV sWLRiV FnysV [LjiLigRiVsV @sxqsLRi\sV[WZNP[ LigRiV [ RW.

3. NRPLi[s }qs [ sV NRPRgS.

4. xsVT\|mnsLRiVs xmsLjibdPLi GsR\sVs }qsV [Rs sLSLjiLiRVN][y.

5. RL][ryV sVLji RVV xsVT\|mnsLRiV VVNRP |qsy=L`i sV xmsLjiOTPQLi aRPVxmsLRiy.

xms xqsLisR=LRiLi [ RVszqss sLRi*xc

1. @s [LjiLigRiVsV xmsLjiOTPQLiy.

2. @s yLRiV }qs RVsLRiVsV aRPVxmsLRiy.

3. @s NRPWLigRiV sLRiV sVLji RVV NRPLi[s=LRiV VVNRP xqslLi[xqsVs NUPs [zqs @sxqsLRi\sV[Lj i}msLRiV [ RW.

4. @s AxmslLi[LigRiV sVLji RVV }qszmns NRPLiV VVNRP |qsLigRiV sVLji RVV AxmslLi[xtsQsV N`P [ RW.5. R RWLji yLRiVs xqsWRs s[VLRiNRPV xsVT\|mnsLRiV VVNRP |qss=LigRiV FssVLi= s Lki RWNTP s[ [ RW.

4.Describe the various gas leakage detective methods.

1. @sWs RW:c@sWs RW dZNP[s zqsxqssV sVLi C sRLigS NRPsVg]ssRVsV.

a) xqsLRiV zqsN`P= sVxmsWgjiLicC sysLi][NR PR\sVs dZNP[ VVNRP }msqs sV NRPsVg]ssRVsV.dZNP[

Ds][@sWs RWNTP C zqsN`P }mnssV FsNP= F @LiVV s F~gRi @sWs RW N][Q\lLiRV [NRP @sWs RW xqs\Q` gSsRVsV.

b) FsLRis V sVsqs }msxmsLRiVs dZNP[ Ds][ |msT[@j dsLi LRiLigRiVNTP sWLRiVsV.2. zmns RWsV:czmns RWsVc11,zmns RWsVc12,zmns RWsVc22 VVNRP dZNP[s lLiLiRV syssVV ssVxqsVN]ssRVsV.


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a) rxmso r~WxtsQsV:c dZNP[ DsRs @sVsWsLi Ds][ rxmso r~WxtsQsVs @|m^s [}qs, dZNP[DsQLiVV[

VR gRiV GLRiRVsV.

b)x\ ` xqsV Lixmso:- gS[gRi ANTP=sV xqsxRVLi][}mn ssV |qss=LigRiV GLi gS DxmsWgRixmsRVsV.

dZNP[ FyLiVVLi[y dN`P xqsV [ RVV xqslLi[xqsV gRiVLiy Bj FyxqsV @LiVVsxmsoRV NRPL`i }mnssV dZNP[ sVVys gkis [y UmsdsLigS

sWLRiVsV.

3. xqsLRiV R RW\ZNPQQ=RV:- INRP NRPLRi sLRi @sWs RW][R Tzmss NS` s RV dZNP[ Ds][ [NRP dZNP[sxmsLjibdPLiRV

xqslLi[xqsV sR DLisLiVV[d ZNP[ Ds][ s R\sVs F~gRi sRVsV.

4. FsNSQsN`P dN`P T[NRPLRiV:- Bj y |qss=s T\sqs sVLji RVV @s LRiNS LjixmnslLiLi gSxqsV dN`PT[ORPQsV N][xqsLi

DxmsWgRixmsRVsV.Bj BsxqsVsVLi [NTP LjizmnslLiLi sV xqsNP [ RVsNTP ks sVVRLi F~Rso WVDLiRVsV.WV[

gRi {LigRiV FssVLi LjixmnslLiLi gSxqsVs { [ RVVsV. NRPlLiLiV Fn [Lj izmnslLiLi gSxqsV sWLRiVLiRVsV.C

sWLRiV gSxqsV dZNP[ sVVys RV[ RVVsV.gSxqsV dZNP[s ATV rLi` xqsxRVLi][sL SLjiLiRVLRiV.

5. Explain trouble shooting in Refrigeration system.

LjizmnslLixqssV zqsxqssV sLiRV V xqsWLigRiV C sRLigS DLiRVsV.

I.

Lj izmnslLi[LigRiV RVWs sRsNRP FsLi1.xmnsQp FsLi c xmnsQps xmsLjibPLi,xmnsQp FLiVVsLiVV[ sWLS.

2.xqs|m^s J[ R NRPVs cJV dsVLRiV xqsxRVLi][J [s N`P [zqs |qs\LRiVs xqsLji[ RW.

3.NRPsORPQsV [ZNPs @sLi cLji[ sR J[s N`P [zqs, J[ [sLiVV[\ sV NRPLisVs N`P [ RW.

4.ZNPFyzqsLRiV FyRsLi czqsLigRiV Lixmso][ZNPFyzqsLR iVs N`P [ RW,dZNP[ DsLiVV[ sWLS.


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5.Lji[T }mnsNTPs gS DLiRV cLji[[ NRPVLiy xqs\lLis xqs|m^s J[][Lj izmnslLi[LRiVsV ryLRiV [ RW, RVWs ryLRiV

@LiVVsLiVV[Lj i[s sWLS.

6.T}mnsNTPs RL][ry c RL][ry [NRPVLiy LjizmnslLi[LRiVsV ryLRiV [ RW, RVWs xmss[zqssLiVV[,

NRPsORPQsV xqsLjigS DLi[ R L][ry s Lji}msLRiV [ RVLi [y sWLS.

7.NRPLixmsxqsLRiV [NRP RL][ry \sLRiV cgjis \sLi s Lji}msLRiV [ RVLi [y sWLS.

gjiFso

II.Lj izmnslLi[LigRiV RVWs x sVLigRiV [zqs AgjiFso :-1.J[ y RNRPVs cJV dsVLRiV][J [s N`P [zqs, dsVT RVLi J[ NRPs10% FsNRPVs [y RNRPVsDsQLiVV[|q s\LRiVs xqsLji[ RW.2.T}mnsNTPs ZNPFyzqsLRiV cZNPFyzqsL ì s xqsV Lixmso ][N` P [zqs @sxqsLRisVLiVV[ sWLS.

3.T}mnsNTPs Lji[cLj i[s N` P [zqs @sxqsLRisVLiVV[ sWLS.

III.Lj izmnslLi[LRiV y s[gRiLigS xmss[ RVV :-

1.BLiLji RVLRiV Lixmso sg RiLi c.LjizmnslLi[LRiV RVWs ][Lì s N][ [zqs Lims s N`P [ RW,Lixmso

sgjisLiVV[zqs* s N`P [zqs sWLS.

2.T}mnsNTPs gS|qs {qs c][Lì gS|qs s N`P [zqs @sxqsLRi\sV[ sWLS.

3.xqsLjigS [s FsLiVVLRiV xqsLRiVQ[xtsQsV cLjizmnslLi[LRiV RVWs s N`P [ RW, g][RsVLi xqs\lLis RWLRiLi[DLiy.

4.gSqs RVWs dZNP[ cdZNP[s N`P [zqs, Lji}msLRiV [ RVLi [y sWLRiLi [ RW.

5.RL][ry NRPsORPQsV sRVVgS DLiRV cNRPsORPQsV N`P [zqs ,\ [ RW.

6.T}mnsNTPs RL][ry c RL][ry [NRPVLiy LjizmnslLi[LRiVsV ryLRiV [ RW, RVWs xmss[zqs

sLiVV[, RL][ry s sWLS.

7.LjizmnslLiLi RNRPVsgS DLiRV cLjizmnslLiLi s N`P [zqs, RNRPVsgS DLi[yL ji [ RW.

8.RVWs sLiRV [sV DLiRLi cRVWs sLiRV [sVsV N`P [zqs,[sV DsQLiVV[\ Q zmnsLRiV sWLS


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IV.Lj izmnslLi[LRiV aRPLi [ RVV :-

1.xqsLjigS Bs ry [ RVNRPFsLi cG\ss NSLiFsLi= sRVVgS DLi[\ [ RW.

2. sWLRiV aRPLi [ RVV csWLRiVs N`P [ RW L][LRiV }qsLRiV][[ NRP sRVVgS Ds sWLRiV

[VNRPVRgRiLi,sRVVgS Ds NSLiF sV=s Lji}msLRiV[NRP \V [ RW.

3.ZNP[s s xqsLjigS [NRP Fso cZNP[s s s N`P [zqs @sxqsLRi\sV[ZNP[ s s s xqsLji[ RW.4.NRPLixmsxqsLRiV[aR PLi cNRPLixmsxqsLRiVs N`P [zqs @sxqsLRi\sV[NR PLixmsxqsLRiV [LjiLigRiVsV sWLRiLi [NRP

WZNP[ [ RW.

V. RNRPVs LjizmnslLi[LigRiV xmssLi DLiRLi [y RNRPVs NRPWLigRiV rysVLRiQLi DLiRV :-

1.T}mnsNTPs RL][ry cAxmslLi[xtsQsVsV N`P [zqs @sxqsLRi\sV[ sWLS.2.LjizmnslLiLi yLji sxtsQFsLi cN]RNR PWLigRiV zqsxqssV s @sVLRiLi.

3.NRPLi[s=LRiV rysVLRiQLi RNRPVs cNRPLi[s=LRiV s N`P [zqs G\sVs FsLiVVLRiV Fn @RLiNRPVV DLi[]gj iLiy.

VI. Hqs ssVjgS R RWLRisLi :-

1.LixmslLi[RLRiV NRPLi[V xqsLjigS |qs [ RVNRPFsLi cN`P [zqs LixmslLi[RLRiV NRPLi[VsV Lji|qs [ RW.

2. ][LRiVsV RLRiRVgS LRisLi c@ssxqsLRiLigS ][LRiVsV LRisLi RgjiLiy.

3.RL][ry y N][LRiV |qsLig`i sLiRV |qs [ RVNRPFsLi c N`P [zqs |qs [ RW

VII. RV\ sxmso [sV GLRiRLi :-

1.FsNRPVs x sV` gRi yysLRiLi c[sVsV @xmsVRxmsVRV RVR y2.T}mnsNTPs ][LRiV gS}qs c xqs\lLis ][LRiV {qsLigRiV N][xqsLi ][LRiV gS}qs sV N`P [ RW

VIII. xmss[xqsVLij NSs xqsLjigS ZNP[s NRPW @sNRPFsLi :-

1.LixmslLi[RLRiV NRPLi[V xqsLjigS |qs [ RVNRPFsLi cN`P [zqs LixmslLi[RLRiV NRPLi[VsV Lji|qs [ RW.

2. RV LixmslLi[RLRiV y FsNRPVs cRL][ry sV sWNTPsVsV y |qsLigRiVsNRPV Lji|qs [ RW.

3.][LRiV FsNRPVs xqssV RVLi LRi DLiRLi cDxmsWgjiLis RLRiVyR sLis[][ LRiV N][ [ RW.


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4.|qs\ |ms gRi HsV= FsLiVVLRiV xqsLRiQ[xtsQsV c HsV= sV xqsLjigS |ms

N`P [ RVLi

6. Explain the trouble shooting in Air Conditioning system

FsLiVVLRiV NRPLiUxtsQsLigRiV zqsxqssV sLiRV V xqsWLigRiV C sRLigS DLiRVsV.

I. NRPLixmsxqsLRiV sVLji RVV NRPLis=LRiV FnysV sWLRiV ryLRiV @sNRPFsLi :-

1.xmnsQp FsLi cT}mnsNTPs xmnsQps sWLS, @jNRP J[ sVLji RVV uyLRiV xqsLRiWQ gRi @sNSaSV N`P

[ RW.

2.T}mnsNTPs RL][ry cLji}msLRiV [ RVLi [y

3.\sLjiLigRiV [y c\sLjiLigRiVs N`P [zqs @sxqsLRi\sVs Lji}msLRiV [ RW.4.T}mnsNTPs NRPLi[V cNRPLi[V N`P [zqs T}mnsNTPs NRPLi[Vs sWLS.

II. NRPLixmsxqsLRiV LRis @soRVsxmsNTP FsLiVVLRiV Fn @sNRPFsLi :-

1.FnysV sWLRiV uyxmnsQo [y cFnysV sWLRiV uyxmnsQo sVLji RVV [` V N`P [zqs Lji}msLRiV [ RVLi [ysWLS.

[RV sLigjiFsLi

2.T}mnsNTPs FnysV sWLRiV cFnysV sWLRiV sWLS.

3.T}mnsNTPs Lji[[ y ZNPFyzqsLRiVV cuyLRiV xqsLRiWQ s N`P [zqs @sxqsLRi\sV[Lj i[[ yZNPFyzqsLRiVVsWLS.

III. NRPLis=LRiV FnysV LRis @soRVsxmsNTP NRPLixmsxqsLRiV ryLRiV @sNRPFsLi : -

1.NRPLixmsxqsLRiV xqsLRiWQ J|mss @sLi c.NRPLixmsxqsLRiV \sLjiLigRiV N`P [zqs Lji}msLRiV [ RW

2.T}mnsNTPs NRPLixmsxqsLRiV sWLRiV cNRPLixmsxqsLRiV sWLRiV sWLS.

3.T}mnsNTPs NRPLixmsxqsLRiV ryLjiLigRiV ZNPFyzqsL RiV cZNPFyzqsLRiV sWLS.

4.T}mnsNTPs RL][ry xqsLRiWQ cRL][ry xqsLRiWQ s NP [zqs Lji}msLRiV [ RW [y sWLS.

IV. zqsxqssV ZNPFyzqs RNRPVs : -


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1.RNRPVs LjizmnslLiLi yLji cdN`P sV N`P [zqs ,dN`P sV Lji}msLRiV [ RW , LjizmnslLiLi yLji [ RW

2.T}mnsNTPs FsNP= }mss=sV yV* cFsNP= }mss=sV yV*sV Lji}msLRiV [ RW [y sWLS.

3.RLji NRPLis=LRiV cNRPLis=LRiVs aRPVxmsLRiy

4.NRPLixmsxqsLRiV yV* dN`P cyV* }ms @|qsLi s sWLS.

5.FsNP= }mss=sV yV* [y }qs RVsLRiV cFsNP= }mss=sV yV* sVLji RVV }qs RVsLRiVs aRPVxmsLRiy

xmsg`i @so

V. NRPLixmsxqsLRiV aRPLi [ RVV :-

1.@Ljigjis NRPLixmsxqsLRiV [LjiLigRiVV cNRPLixmsxqsLRiVs sWLS.

2.ALiVVV FsNRPVsgS DLiRLi c@RsLigS Ds ALiVVV dzqss[ RW.3. sLjigjis NRPLixmsxqsLRiV yV* cyV* }ms @|qsLi s sWLS.VI. xqsLjixmsR NRPWLigRiV [NRPFso :-

1.NRPWLigRiV N][ RVVsNRPV xqsLjixmsR ` c` yLRiV yV*s N`P [ RW

yLRiV xqs|m^s [NRPFsLi

2.NRPWLigRiV N][ RVV dsVRVgS LjizqsNRP` cALiVVV zmnsLRiV N`P [ RW,NRPWLigRiV N][ RVV \sV=sV NUPs[ RW

FsLiVVLRiV Fn @sLi

3. @jNRP NRPWLigRiV [` c][LRiV=,NTPNUPV, sVgjis { rLRiV= }qsqs sV N`P [zqs NRPWLigRiV [`RgjiLiy.

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REFRIGERATION AND AIRCONDITIONING NOTES.pdf