GATE Mechanical Engineering (ME) 2012 Solved Paper
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Question Numbers: 60-61
A refrigerator operates between 120 kPa and 800 kPa in an ideal vapour compression cycle with R-134a as the refrigerant. The refrigerant enters the compressor as saturated vapour and leaves the condenser as saturated liquid The mass flow rate of the refrigerant is 0.2 kg/s. Properties for R – 134a are as follows
A refrigerator operates between 120 kPa and 800 kPa in an ideal vapour compression cycle with R-134a as the refrigerant. The refrigerant enters the compressor as saturated vapour and leaves the condenser as saturated liquid The mass flow rate of the refrigerant is 0.2 kg/s. Properties for R – 134a are as follows
|
Saturated R – 134a |
|||||
|
P(kPa) |
T°C |
hf (kJ/kg) |
hg (kJ/ kg) |
Sf (kJ / kg.k) |
Sg(kJ /kg.k) |
|
120 |
-22.32 |
22.5 |
237 |
0.093 |
0.95 |
|
800 |
31.31 |
95.5 |
267.3 |
0.354 |
0.918 |
|
Superheated R – 134a |
|||
|
P(kPa) |
T°C |
h (kJ/ kg) |
S (kJ / kg.k) |
|
800 |
40 |
276.45 |
0.95 |
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