EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
9th Edition
ISBN: 9781119321453
Author: Sonntag
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Chapter 5, Problem 5.35P
A large heat pump should upgrade 4MW of heat at 65°C be delivered as heat at 145°C. What is the minimum amount of work (power) input that will drive this?
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A large heat pump should upgrade 4 MW of heat at 65 C to be delivered as heat at 145 C. What is the minimum amount of work input that will drive this?
Chapter 5 Solutions
EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
Ch. 5 - Prob. 5.1PCh. 5 - A windowmounted air conditioner removes 3.5kJ from...Ch. 5 - Prob. 5.18PCh. 5 - R410A enters the evaporator (the cold beat...Ch. 5 - A large heat pump should upgrade 4MW of heat at...Ch. 5 - A car engine 5g/s fuel (equivalent to addition of...Ch. 5 - Prob. 5.45PCh. 5 - R134a fills a 0.1m3 capsule at 20°C, 200kPa. It is...Ch. 5 - Air in a piston/ cylinder goes through a Carnot...Ch. 5 - Consider the previous problem and assume the...
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- Refrigerators currently being manufactured in the United States are using______as their refrigerant.arrow_forwardFind the required work to transfer 1200j of heat from the sink(cold body)-90°c source (hot body)at 35°c in the case of refrigeratorarrow_forwardHeat is transferred to a heat engine from a fumace at a rate of 120KW. If the rate of waste heat rejection to a nearby river is 50000W. Find the net Power output and the thermal efficiency for this heat engine.arrow_forward
- The thermal efficiency of a Carnot heat engine is 30%. If the engine is reversed in operation to work as a heat pump with same operating conditions then what will be the COP for heat pump?arrow_forward/Heat is transferred from a tank of water in a refrigerator at(OC) degrees to a tank of boiling water at (100 C) degrees. With a reversible machine (heat pump). Calculate the Heat drawn from the refrigerator. if it was The heat transferred to the tank of boiling water is 2254kJ.arrow_forwardFind out the COP of a Carnot heat pump operating between 6°C and 37°C.arrow_forward
- A carnot engine requires 40 kw from the hot source. The engine produces 18 KJ/s of power and the sink temperature is 20 degree celcius, what is the temperature of the hot source in Celcius?arrow_forward3.0 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.arrow_forward3.0 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 30 kw. The actual C.O.P. of the refrigeration plant used is one third that of an ideal plant working between the same temperatures. Find the power required to drive the plant.arrow_forward
- A heat engine that receives heat from a furnace at 1200°C and rejects waste heat to a river at 20°C has a thermal efficiency of 40 percent. Determine the second law efficiency of this power plant. P. S. Hi. please show me the full solution so i can review it thank you very mucharrow_forwardAn engine has a thermal efficiency of 40%. It is used to drive a refrigerator having a COP of 5.0.Heat Removed from the cold body by the refrigerator is 1 kJ. What should be the heat input to theengine?arrow_forwardA gasoline truck engine takes in 10,000 J of heat and delivers 2,000 J of mechanical work per cycle. . What other machines utilize the concept of heat engine in its operation? Give at least 3 examples.arrow_forward
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