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4.9

Expert-verifiedFound in: Page 129

Book edition
1st

Author(s)
Daniel V. Schroeder

Pages
356 pages

ISBN
9780201380279

Estimate the maximum possible COP of a household air conditioner. Use any reasonable values for the reservoir temperatures.

COP=21

Assume temp inside room T_{c}=25^{o} C = 298 K

Assume temp outside room T_{h}=40^{o} C = 313K

Find COP.

Coefficient of performance (COP) $=\frac{{T}_{c}}{{T}_{h}-{T}_{c}}$

Substitute the values of temperature$\mathrm{COP}=\frac{{T}_{c}}{{T}_{h}-{T}_{c}}=\frac{313\mathrm{K}}{(313\mathrm{K})-(298\mathrm{K})}=20.866$ = 21 ( rounded)

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