In a steam machine, the steam is heated to 127 degrees. What is the temperature of the steam in the refrigerator if the efficiency of the machine is 0.4?
To calculate the value of the steam temperature in the refrigerator of the specified steam engine, we use the formula: η = 1 – Тх / Тн and Тх = (1 – η) * Тн.
Variables: η – efficiency of the specified steam engine (η = 0.4); Тн – heater temperature (Тн = 400 К (127 ºС)).
Calculation: Тх = (1 – η) * Тн = (1 – 0,4) * 400 = 240 К (-33 ºС).
Answer: The refrigerator of this steam engine has a temperature of -33 ºС.
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