Solve fast with proper explanation. 6-84E A heat engine is operating on a Carnot cycle and has athermal efficiency of 75 percent. The waste heat from this engineis rejected to a nearby lake at 60°F at a rate of 800 Btu/min.Determine (a) the power output of the engine and (b) the tem-perature of the source. Answers: (a) 56.6 hp. (b) 2080 RSourceTHCarnotHE800 Btu/minSink60°FFIGURE P6-84EWnet.out

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Answered: 6-84E A heat engine is operating on a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Consider a Carnot heat-engine cycle executed in a closed system using 0.01 kg of refrigerant-134a as the working fluid. The cycle has a thermal efficiency of 15 percent, and therefrigerant-134a changes from saturated liquid to saturated vapor at 50°C during the heat addition process. Determine the net work output of this engine per cycle.
Consider a Carnot heat-engine cycle executed in a steady-flow system using steam as the working fluid. The cycle has a thermal efficiency of 30 percent, and steam changes from saturated liquid to saturated vapor at 275°C during the heat addition process. If the mass flow rate of the steam is 3 kg/s, determine the net power output of this engine, in kW.
(a) What is the hot reservoir temperature of a Carnot engine that has an efficiency of 42.0% and a cold reservoir temperature of 27.0C? (b) What must the hot reservoir temperature be for a real heat engine that achieves 0.700 of the maximum efficiency, but still has an efficiency of 42.0% (and a cold reservoir at 27.0C)? (c) Does your answer imply practical limits to the efficiency of car gasoline engines?
A reversible heat engine drives the heat pump and takes in heat from a thermal energy reservoir at 1113K and dumps the heat to a reservoir at 333K. The heat pump works on a Carnot cycle and absorbs heat from the thermal energy reservoir at 278K and rejects the heat to a reservoir at 333K.The heat engine is also being used to operate a machine which takes in 30 kW. If the rate of extraction of the heat pump from its initial reservoir is at 17 kJ/s, calculate the ff:- What is the rate of extraction of heat from the heat engine? - What is the rate of the rejection of heat from the 333K reservoir?
A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste heat from this engine is rejected to a nearby lake at 60°C at a rate of 900 kJ/min. Determine the temperature of the source.
A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste heat from this engine is rejected to a nearby lake at 60°C at a rate of 900 kJ/min. Determine the power output of the engine
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the COP, and (d) the minimum power input to the compressor for the same refrigeration load.
A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste heat from this engine is rejected to a nearby lake at 60°F at a rate of 800 Btu/min. Determine (a) the power output of the engine, in Hp and (b) the temperature of the heat source. And draw the P-V and T-S diagram.
Consider a real compressor has an isentropic efficiency of 0.82. This refrigeration cycle has a condenser which over cools a liquid to a temperature of 46.3°C and an evaporator temperature of −8.6°C. The mixture changes to a liquid at a temperature of 48.8°C. Determine the coefficient of performance of this refrigerator for the working fluids of R-12,R-134a,and R-410a.
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at –35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the compressor consumes 3.3 kW of power, determine the mass flow rate of the refrigerant,
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at –35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the compressor consumes 3.3 kW of power, determine the refrigeration load.
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at –35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. If the compressor consumes 3.3 kW of power, determine the COP,

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