Chapter 5, Problem 5.79P

A Carnot heat pump works between 27° C and 327°C. What will be its COP?

The coefficient of performance (COP) for a vapor compression cycle chiller is 8.7.  If the chiller can produce 58 tons of cooling. If the chiller operates for a total of 3568 hours annually, and the cost of electricity is $0.15 per kWh, how much does it cost to operate the chiller? Fill in the operating cost of the chiller in one year in $.

Consider a heat engine rate of heat production at 85 MW and at the same time reject heat to a sink at 40 MW. From the formula file which formula number is applicable to determine the power output and thermal efficiency of the engine.

Quick solution,no gpt.

a refrigerator operating in a room at 20 c has to extract heat at r rate of 500 w from the cabinet at 4 c to compensate for the imperfect insulation. how much power must be supplied to the motor if its efficiency is 80% of the maximum possible?

A cold storage is to be maintained at – 5°C while the surroundings are at 35°C. The heat leakage from the surroundings into the cold storage is estimated to be 28 kW. The actual C.O.P. of the refrigeration plant used is one fourth that of an ideal plant working between the same temperatures. Find the power required to drive the plant.  show t-s diagram

A completely reversible heat pump has a COP of 1.6 and a sink temperature of 300 K. Calculate the temperature of the source.

A heat engine has a thermal efficiency of 70%. During each cycle the engine does 400J of work. What is the magnitude of waste heat rejected to the low temp reservoir?

Find the efficiency of the Carnot heat engine operating between 427 C and 77 C.