The heater temperature in a heat engine with an efficiency of 37.5% is 207 ° C. Find the temperature of the refrigerator.
| January 18, 2021 | education
To find the desired temperature of the refrigerator of the specified heat engine, we use the formula: η = 1 – Тх / Тн, from where we express: Тх = (1 – η) * Тн.
Values of variables: η – efficiency of the specified engine (η = 37.5% = 0.375); Тн – absolute temperature of the heater (Тн = 480 К (207 ºС)).
Let’s calculate: Тх = (1 – η) * Тн = (1 – 0,375) * 480 = 300 К (27 ºС).
Answer: The temperature of the engine refrigerator is 300 K or 27 ºС.
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