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3 years ago

8

Plz help me and thx if you do!

1 answer:

Rina8888 [55]3 years ago

3 0

I think it’s b... not sure tho sorry

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The ocean thermal energy conversion project uses the surface water near tropical islands with a temperature of 20°C as the hot t

choli [55]

Answer:

$\eta=0.0512\ or\ 5.12\%$

Explanation:

Heat engine is device operating in a continuous cycle between two reservoirs such that it transfers heat from a high temperature reservoir to a low temperature reservoir giving some work output in synchronization to Kelvin-Plank statement of the second law of thermodynamics.

<u>Given that:</u>

temperature of higher temperature reservoir, $T_H=20+273=293\ K$

temperature of lower temperature reservoir, $T_L=5+273=278\ K$

<u>For maximum efficiency:</u>

$\eta=1-\frac{T_L}{T_H}$

were:

$T_H\ \&\ T_L$ are the temperatures of higher temperature reservoir and lower temperature reservoir respectively.

$\eta=1-\frac{278}{293}$

$\eta=0.0512\ or\ 5.12\%$

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3 years ago

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