The boiler of the thermal station operates at a temperature of 550 Celsius, the waste heat

The boiler of the thermal station operates at a temperature of 550 Celsius, the waste heat is discharged to the river at a temperature of 20, which is the efficiency of the plant.

Task data: Тн (operating temperature of the boiler of the heating station) = 550 ºС (absolute temperature Тн = 823 К); Тх (temperature of the removed waste heat) = 20 ºС (absolute temperature Тх = 293 К).

The efficiency of this thermal plant is determined by the formula: η = (Тн – Тх) / Тн.

Let’s make a calculation: η = (823 – 293) / 823 = 0.644 or 64.4%.

Answer: This thermal station has an efficiency of 64.4%.