Determine the refrigeration load. (Take the required values from saturated refrigerant-134a tables and steam tables.) (You must provide an answer before moving on to the next part.) The refrigeration load is 6.273 kW.

Elements Of Electromagnetics
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NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by
rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The
refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and
-34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no
heat to the environment.
26°C↑
42°C
1
(3)
Expansion
valve
Condenser
Evaporator
QL
Water
1.2 MPa
65°C
↑lin
Win
Compressor
60 kPa
-34°C
Determine the refrigeration load. (Take the required values from saturated refrigerant-134a tables and steam tables.)
(You must provide an answer before moving on to the next part.)
The refrigeration load is 6.273 ✪ KW.
Transcribed Image Text:NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C↑ 42°C 1 (3) Expansion valve Condenser Evaporator QL Water 1.2 MPa 65°C ↑lin Win Compressor 60 kPa -34°C Determine the refrigeration load. (Take the required values from saturated refrigerant-134a tables and steam tables.) (You must provide an answer before moving on to the next part.) The refrigeration load is 6.273 ✪ KW.
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