An ideal vapor compression refrigeration cycle is modified to include a counter flow heat exchanger between the stream exiting the condenser and the evaporator. R-12 is the working fluid. Data are known at various locations; the mass flow rate is given. Determine (a) refrigerant capacity (b) power input required in the compressor (c) COP. 20 bar CONDENSER 40c+3 1 bar 10C 20 bar 40C 3 R-12 20 bar 10C 1 bar sat.vap 1 1 bar EVAPORATOR m=.12 kg/s

The different descriptions for fluid power conductors (lines). The ___________ lines are connected to the output device a. suction b. return/exhaust c. actuator d. supply

Which statement is wrong regarding the following heat pump? Inside air Outside Condenser Evaporator Expansion valve Compressor O a. It can have either an ideal or actual thermodynamic cycle b. It always has an ideal thermodynamic cycle O C. It is driven using electric power d. It uses a condenser for heat rejection

The evaporator is device used in the high pressure side of a refrigeration system. * O True O False

1 The condenser can be part of which loop(s)? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 2 The evaporator can be part of which loop(s)? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 3 Which loop is eliminated in a direct expansion (DX) system? a- Airside loop b- Chilled-water loop c- Refrigeration loop d-Heat-rejection loop e-Controls loop 4 What are some benefits of using a "packaged" piece of cooling equipment rather than a "split" system?

What is Ice Powered Air Conditioning?

What are the basic 3 phenomena that can occur in a thermocouple circuit ?

9) What is the refrigeration effect?A: It is the energy transfer per kg of refrigerantB: It is the energy transfer per oC of refrigerantC: It is the energy reject per kg of refrigerantD: It is the energy reject per oC of refrigerant

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What happens if the evaporator fan motor do in a refrigerator stops during the cooling cycle? Select the correct answer: A. the uni maintains 35 to 45 degrees B. the unit temperature falls below 32 degrees C. th unit shuts down D. the evaporator freezes over and the temperature rises