Question

Идеальная тепловая машина Карно совершает за один цикл работу 75 кДж. Температура нагревателя 100 градусов по Цельсию, холодильника 0 градусов. Найдите КПД цикла.

Answer 1

дано T1=373 К     T2=273 К       КПД - ?

КПД = (T1-T2)*100%/T1=100*100/373=26,8%

Answer 2

Calculating the Efficiency of the Carnot Cycle

To calculate the efficiency of the Carnot cycle, we can use the formula for the Carnot cycle efficiency:

Efficiency (η) = 1 - (Tc/Th)

Where: - Tc = Temperature of the cold reservoir - Th = Temperature of the hot reservoir

Given: - Work done per cycle (W) = 75 kJ - Temperature of the hot reservoir (Th) = 100°C = 373 K - Temperature of the cold reservoir (Tc) = 0°C = 273 K

Calculation

Using the given temperatures, we can calculate the efficiency of the Carnot cycle:

Efficiency (η) = 1 - (Tc/Th) Efficiency (η) = 1 - (273/373) Efficiency (η) ≈ 1 - 0.731 Efficiency (η) ≈ 0.269

So, the efficiency of the Carnot cycle is approximately 26.9%.