SRI VENKATESWARA COLLEGE OF ENGINEERING
DEPARTMENT OF MECHANICAL ENGINEERING
THERMAL ENGINEERING LABORATORY
UG Third year Mechanical Engineering students (2012-2016) at Thermal Engineering laboratory
AVL combustion analyser with Charge amplifier setup
Department of Mechanical Engineering
THERMAL ENGINEERING LABORATORY
Machine Name / Type Specifications
Photographic view
Four Stroke diesel engine with combustion analyzer
Rated power 4.4 kW Rated speed 650
rpm Bore
diameter 114.3 mm
Stroke 139.7 mm
Compression ratio
16.0 : 1
Orifice diameter
30 mm
Coefficient of discharge
0.62
Bomb calorimeter
Calorific value
nichrome wire
1400 J/g
Calorific value of sewing cotton
17473 J/g
Water equivalent
of calorimeter
(W)
9719 J/oC
Mass of nichrome wire/cm
2.45 x 10‐3 g
Boiler Heating surface
22.5 m2
Standard working pressure
15 bar
Capacity 750 kg/h
Steam turbine
Maximum pressure
6 bar
Maximum speed
4000 rpm
Efficiency of the
generator
0.75
Twin cylinder diesel engine
Rated power 7.36 kW Rated speed
(N) 1500 rpm
Bore dia (D) 95 mm Stroke (L) 110 mm Length of
lever arm (R) 0.32 m
Orifice dia.(d) 24 mm Coefficient of discharge (Cd)
0.6
Compression ratio
16 : 1
Heat balance test diesel engine
Rated power 3.7 kW Rated speed 1500 rpm Bore dia (D) 80 mm Stroke (L) 110 mm
Compression ratio
16.5 : 1
Orifice dia (d) 19 mm Coefficient of discharge (Cd)
0.6
Pin‐fin apparatus(Natural Convection)
Duct size 15 x 10 cm Diameter of the fin (d)
12.7 mm
Length of the fin (l)
125 mm
Diameter of the orifice
(do)
18 mm
Coefficient of discharge
(Cd)
0.64
Thermal conductivity
of fin material (k)
110 W/mK
Loading device
Make Benz systems
Dynamometer constant
2000
Supply voltage
240 ±10 % AC, 50 Hz, 1
φ Maximum excitation current
6 to 8 Amp
Thermal conductivity of the given composite wall
M.S. plate 300 mm φ x 12 mm thick
Wood plate 300 mm φ x 12 mm thick
Backelite plate
300 mm φ x 12 mm thick
Parallel & Counter flow heat exchangers
Length of heat
exchanger (l)
1.6 m
Inner (copper) tube inner diameter
(di)
11 mm
Inner (copper) tube outer diameter
(do)
12.5 mm
Outer (GI) tube inner diameter
(Di)
24 mm
Outer (GI) tube outer diameter
(Do)
32 mm
Two stage reciprocating air compressor
Working pressure
7 bar
Orifice diameter (do)
10.4 mm
Coefficient of discharge (Cd)
0.6
Compressor 1.5 kW LP cylinder bore (D)
63 mm
LP cylinder stroke (L)
89 mm
HP cylinder bore
57 mm
HP cylinder stroke
63 mm
Multi Cylinder Petrol engine with Eddy Current Dynamometer
Rated power
29.5 kW
Rated speed (N)
5500 rpm
Bore dia (D) 68.5 mm Stroke (L) 72 mm
Forced convection apparatus inside the tube
Outer pipe diameter
(Do)
32 mm
Inner pipe diameter
(Di)
28 mm
Length of test section
(L)
500 mm
Blower 0.5 HP motor
Orifice diameter (d)
14 mm
Dimmer-stat 0 to 2 Amps. 260 Volts,
A.C. Temperature
Indicator 0 to 300°C
Voltmeter 0 -100/200 V Ammeter 0-2 A
Heater 400 watts
Lagged pipe apparatus
M.S inner pipe (d1)
60 mm
M.S middle pipe (d2)
114 mm
M.S outer pipe (d3)
165 mm
The effective
length of the pipes (L)
500 mm
Heat transfer from pin-fin (Forced convection)
Diameter of the tube(D)
38 mm
Length of the tube(L)
500 mm
Duct size 250 mm x 250 mm x 900 mm
No. of thermocouples
7 and marked on Temperature indicator
switch Thermocouple
No. 8 reads the temperature of air in the duct.
Temperature Indicator
0 – 3000C
Ammeter 0 – 2 Amps Voltmeter 0 – 100 /
200 Volts Dimmerstat 2 Amps. /
230 Volts Heater Cartridge
type (400 watts)
Emissivity measurement apparatus
Heater input to black plate W1
V1 x I1
watts Heater input to test plate W2
V2 x I2
watts Diameter of the
plates (Aluminum)
160 mm (Test plate and Black
plate) Capacity of
heater 200 W each
Voltmeter 0 -100/200 V
Ammeter 0-2 Amps Dimmerstat for
plates 0 – 2
Amps, 0 – 260 V
Enclosure size 580 mm x 300 mm x 300 mm
Thermocouples ChromelAlumel – 3
Nos
Stefan-Boltzman apparatus
Hemispherical enclosure diameter
200 mm
Base plate, bakelite diameter
240 mm
Sleeve size, diameter
44 mm
Test disc, diameter
20 mm
Mass of test disc (m)
0.005 kg
Specific heat, Cp of the test
disc
0.41868 kJ / kg °C (or) 0.1 kcal /
kg°C No. of
thermocouples mounted on B
4 Nos
No. of thermocouples mounted on D
1 No.
Temperature indicator digital
0.1°C L.C 0 - 200°C
Immersion water heater of suitable capacity
1.4 kW
Vapour compression Refrigeration test rig
System Vapour compression
system Refrigerant Freon-12 Compressor 1/3 hp
reciprocating type
Speed 2850 rpm Bore
diameter 25.4 mm
Stroke length
22.2 mm
Vapour compression Air conditioning test rig
System Vapour compression
system Refrigerant Freon-22 Capacity 1 Ton
Speed 2850 rpm Duct size 0.2775 m x
0.175 m