1. A Carnot refrigerator operates between two reservoirs, one at 250K and the other at 300K. It is claimed that the refrigerator has a COPr of 6. Determine: a. If the energy removed from the low temperature reservoir is 160 kJ, then what is the energy delivered to the high temperature reservoir and how much work must be put into the system. b. Is the refrigerator even possible?

The heat removal rate from a refrigerated space and the power input to the compressor are 8.5 kW and 1.7kW respectively. Cop of the refrigerator.

A refrigerator working between 283 K to 310K and extracting 340 J of heat. How much work required to run the refrigerator.

(iii) What is the difference between a refrigerator and a heat pump?

A refrigerator is used to keep the cold space at 5 °C by rejecting 8 kJ/s of heat by the condenser tothe outdoor air at 25 °C. If the compressor consumes 3 kJ/s of power, determinei. the rate of heat removed from the cold space (kJ/s),ii. the COP of the refrigeratoriii. the minimum power input to the compressor for the same rate of heat removed (kJ/s), andiv. draw the schematic of the refrigerator as a reversed heat engine.

The objective of a refrigerator is to remove QL from the cooled space.

A heat engine with a thermal efficency of 45% rejects 500kJ/kg of heat. How much heat does it recieve?

Find out the COP of a Carnot heat pump operating between 6°C and 37°C.

A heat pump is used to meet the heating requirements of a house and maintain it at 20°C. On a day when the outdoor air temperature drops to -2°C, the house is estimated to lose heat at a rate of 63,000 kJ/h. If the heat pump under these conditions has a COP of 1.8, determine the rate at which heat is absorbed from the cold outdoor air. Select one: a. 28,000 kJ/h b. 58,000 kJ/h c. 38,000 kJ/h d. 48,000 kJ/h  NEED ASAP. I WILL UPVOTE

2. A food department is kept at 212°C by a refrigerator in an environment at 30°C. The total heat gain to the food department is estimated to be 3300 kJ/h and the heat rejection in the condenser is 4800 kJ/h. Determine the power input to the compressor, in kW and the COP of the refrigerator. 30°C 4800 kJ/h R 3300 kJ/h -12°C Win