Question

Двигатель внутреннего сгорания имеет кпд 15% определите количество теплоты, отданное холодильнику, если совершаемая двигателем полезная работа равна 200 Дж.

Answer 1

A=200 Дж кпд=0,15
кпд=A/Q1
Q1=A/кпд=200/0,15=1333 Дж
Q2=Q1-A=1333-200=1133 Дж

Answer 2

Calculating the Heat Given to the Refrigerator by the Internal Combustion Engine

To calculate the amount of heat given to the refrigerator by the internal combustion engine, we can use the formula for the efficiency of the engine and the given useful work done by the engine.

Given: - Efficiency of the internal combustion engine (η) = 15% - Useful work done by the engine (W) = 200 J

Calculating the Heat Given to the Refrigerator

The formula for the efficiency of the engine is given by: \[ η = \frac{W_{out}}{Q_{in}} \]

Where: - \( η \) = Efficiency of the engine - \( W_{out} \) = Useful work done by the engine - \( Q_{in} \) = Heat input to the engine

We can rearrange the formula to solve for \( Q_{in} \): \[ Q_{in} = \frac{W_{out}}{η} \]

Substituting the given values: \[ Q_{in} = \frac{200}{0.15} \] \[ Q_{in} = 1333.33 J \]

Therefore, the amount of heat given to the refrigerator by the internal combustion engine is approximately 1333.33 J.

[[SOURCE #1]]