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AsstProf

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Thermalprimemovers

Definitions Heatreservoirs

Heatsources

Heatsink

Heatengines

Refrigerators

CarnotCycle

Airstandardcycles

Dieselcycle

Rankinecycle

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Device

workingoveracycletoconverttheheatenergy(lowgrade)

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O eysecon awo t ermo ynamics

KelvinPlankstatement

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Classification

Internalcombustionengine(I.C.)

. .

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Classification

. .

Reciprocating

Petrol

Diesel as

Twostroke

Petrol

DieselGas

Space

shuttle

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Theenergyoffuelisreleasedb combustionoffuelwithair

intheengine cylinderitself

External combustion en ineTheenergyofcombustionisnotreleasedinsidethec linder

itistransferredtoaworkingmediumlike

steamorgas

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ChemicalenergyCombustionofsolid,liquidorgaseousfuels

Atomicenergy

Energyisreleasedfromt ec anges nstructureo atom cmater a

Fissionorfusion

Obtaineddirectly

Solarradiation

Geothermalenergy

gysers

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Sourceofinfiniteheatenergy

Willnotaffectsitstemperature

cean, mosp ere

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Absorbsheatfromasystem

Source Suppliesheattoasystem

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Producework continuously

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HeatSource =

Output

T1

= Work

HeatEngine

W=Q1Q2

nergy

= W

HeatSink

1Q

= 21 QQ

T2 1Q

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is30%efficient.Howmuchenergyisabsorbed

A.200J B.467J

. .

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is30%efficient.Howmuchenergyisabsorbed

A.200J B.467J

. .

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is30%efficient.Howmuchenergyisexpelled

A.200J B.467J

. .

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is30%efficient.Howmuchenergyisexpelled

A.200J B.467J

. .

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Kandexhausts700Jat400K.Whatisthe

A.30% B.40%

. .

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Kandexhausts700Jat400K.Whatisthe

A.30% B.40%

. .

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thisheatengine?. .

C.60% D.70%

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thisheatengine?. .

C.60% D.70%

C. 60 %

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inordertomaximizetheefficiencyofaheat

A.MakeTL aswarmaspossible.

. .C.Make Tassmallaspossible.

. .

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inordertomaximizetheefficiencyofaheat

A.MakeTL aswarmaspossible.

. .C.Make Tassmallaspossible.

. .

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Operatinginacycle

Rejectsheattohightemperaturebody

eexpenseso ea npu

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Refrigerator

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Refrigerator

COP=Output

= Energy

Wor

= Q2W

= 1Q

21 QQ

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inordertomaximizetheperformanceofa

A.MakeTL aswarmaspossible.

. .

C.Make Tassmallaspossible.

.H

.

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inordertomaximizetheperformanceofa

A.MakeTL aswarmaspossible.

. .

C.Make Tassmallaspossible.

.H

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refrigeratorbegreaterthanone?. .

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refrigeratorbegreaterthanone?. .

GoodCOPvaluesforactualrefrigeratorscanbe

ormore.

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.

Itremoves8000kJ/hfromthecoldregion.

A.204W B.320W

. .

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Anidealrefrigeratorrunsbetween0Cand25C.

Itremoves8000kJ/hfromthecoldregion.

Whatminimumpowerisrequired?

A.204W B.320W

C.

400

W

D.

733

W

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ThermalProcess

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Quiz

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