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 ?

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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 ?" class="read-more button" href="https://exam.pscnotes.com/mcq/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/#more-2570">Detailed SolutionIn a Bell Coleman Refrigeration plant, compression and expansion of air are
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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 :

100 kW
200 kW
300 kW
400 kW

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47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube
medium at 400 K. If the power output from the heat engine is 200 kW, the irreversibility rate for the process is :" class="read-more button" href="https://exam.pscnotes.com/mcq/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-f/#more-682">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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