Chapter 5, Problem 5.72P

A 4-kW heat pump is operated by a peasant. It should keep a duck hatchery at 32 degrees Celsius, where heat is removed at a rate of 10 kW to the cooler ambient Tambiont. What is the minimum COP for the pump that will be acceptable?

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A carnet heat engine receives heat from a hot reservoir of a temperature 327°c and it rejects the heat to an enviroment with an atmospheric temperature of 27°c . The entire work output of the heat engine is used to run a refrigerator which transfers heat from freezing compartment with a temperature of -23°c and rehects the heat to the same enviroment . Cooling rate required by the refrigirator is 4.5 kW. A) if the rate of heat transfer from hot reservoir to the heat engine is 0.90 kW . Predict the minimum additional power required to run the refrigerator . B) predict a minimum rate of heat transfer from hot reservoir to the heat engine required in order to run the refrigerator without any additional power

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Determine the power consumption of a domestic refrigerator if its refrigerat- ing capacity is TR. It is operating in an ambient of 40°C. Temperature in 8 the freezer must be maintained at –15°C. COP of the system is half the Carnot COP. Assume suitable condensing and evaporating temperatures.

Since Lucas is an engineer familiar with thermodynamics. He decided to create his own heat engine at home to avoid paying for electricity. He created a small, makeshift heat engine for trial. The combustion of his fuel. diesel, reaches a temperature of 750°C, while waste heat is disposed to the atmosphere at 50°C. He, then connected a generator and a heat pump to the heat engine to check the amount of power being produced. Assume that the heat pump will be used to warm his room to 25°C, while the outside temperature is at 5°C. Lucas' rooms loses 85,000 kJ/hr of heat. And, 25% of the heat engine's power output goes to the heat pump. How much diesel (in kg) needs to be burned by the heat engine to maintain the temperature in Lucas' room? Assume carnot heat engine and heat pump. If the natural gas has a heating value of 22,000 BTU/lb.

Asking second time , Strictly don't use chatgpt. I need to understand the concept,give detailed solution in Handwritten format.

Two Carnot heat engines operate in series. The first heat engine absorbs heat of 100kW at 400°C while second heat engine rejects heat at 100°C. If the efficiencies of the heat engines are the same,a. Draw the schematic diagram of the systemb. Find the intermediate temperature in between the heat enginesc. Heat rejected for both heat engines

can you please solve this for me (the fraction of steam extracted from theturbine for the open feedwater heater)