The useful power of the mechanism is 800 W, the efficiency is 12%. How much heat does the mechanism receive per hour?
| December 8, 2020 | education
P (net power) = 800W
N (efficiency) = 12%
t = 3600c (1 hour)
q (amount of heat in 1 s)
Q (amount of heat per hour) -?
N = P / q * 100%
q = P / N = 800 * 100% / 12% = (200 * 100) / 3
Q = 3600 * q = 3600 * 20000/3 = 24000000 = 24MW
Answer: 24MW
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