thermodynamics

2. In a Bell Coleman Refrigeration plant, compression and expansion of air are isentropic. If the temperature of air entering and leaving the expander are 400 K and 200 K respectively then what will be the COP of the plant ? then what will be the COP of the plant ?

[amp_mcq option1=”0.5″ option2=”1″ option3=”1.5″ option4=”2″ correct=”option2″]

Detailed SolutionIn a Bell Coleman Refrigeration plant, compression and expansion of air are isentropic. If the temperature of air entering and leaving the expander are 400 K and 200 K respectively then what will be the COP of the plant ? then what will be the COP of the plant ?

3. A heat engine receives heat from a source at 1600 K at a rate of 400 kW and rejects the waste heat to a medium at 400 K. If the power output from the heat engine is 200 kW, the irreversibility rate for the process is :

[amp_mcq option1=”100 kW” option2=”200 kW” option3=”300 kW” option4=”400 kW ” correct=”option1″]

Detailed SolutionA heat engine receives heat from a source at 1600 K at a rate of 400 kW and rejects the waste heat to a medium at 400 K. If the power output from the heat engine is 200 kW, the irreversibility rate for the process is :

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Test 1