Answered: A diesel engine performs 2200 J of…

A diesel engine performs 2200 J of mechanical work and discards 4300 J of heat each cycle. How much heat much be supplied to engine in each cycle? and what is the thermal efficiency of the engine?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter4: The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 80AP: A Carnot engine operates in a Carnot cycle between a heat source at 550 and a heat sink at 20 ....

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A diesel engine performs 2200 J of mechanical work and discards 4300 J of heat each cycle. How much heat much be supplied to engine in each cycle? and what is the thermal efficiency of the engine?

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A heat engine operates between two temperatures such that the working substance of the engine absorbs 5000 J of heat from the high-temperature bath and discharges 3000 J to the low-temperature bath. The rest of the energy is converted into mechanical energy of the turbine. Find (a) the amount of work produced by the engine and (b) the efficiency of the engine.
A Carnot engine operates in a Carnot cycle between a heat source at 550 and a heat sink at 20 . Find the efficiency of the Carnot engine.
The temperature of the cold reservoir of the engine is 300 K. It has an efficiency of 0.30 and absorbs 500 J of heat per cycle. (a) How much work does it perform per cycle? (b) How much heat does it discharge cycle?
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If a refrigerator discards 80 J of heat per cycle and its coefficient of performance is 6.0, what are (a) the quantity off heat it removes per cycle from a cold reservoir and (b) the amount of work per cycle required for its operation?
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