What is the temperature difference between the heater and the refrigerator
| September 10, 2021 | education
What is the temperature difference between the heater and the refrigerator of an ideal heat engine, if the heater temperature = 400K, and the efficiency value is 20%
The efficiency of an ideal heat engine is calculated using the formula:
K = (Tn-Tx) / Tn, where K is the efficiency, Tn is the heater temperature, Tx is the refrigerator temperature.
Find Tx:
Tn * K = Tn-Tx;
Tx = Tn-Tn * K.
Temperature difference Tn-Tx = Tn- (Tn -Tn * K) = Tn * K = 400 * 0.2 = 80 deg. Kelvin (for the temperature difference it is also valid in degrees Celsius).
Answer: 80 degrees. TO.
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