Question

The heat in an internal combustion engine raises the internal temperatures to 300 deg C. If the outside temperature is 25 deg C, what is the maximum efficiency of this engine? And is it possible to attin this efficiency?

Answer 1

Answer:48 %

Explanation:

Given

outside temperature $=25^{\circ}\approx 298 K$

Internal temperature$=300^{\circ}\approx 573 K$

Maximum efficiency is carnot efficiency which is given by

$\eta =1-\frac{T_L}{T_H}$

$\eta =1-\frac{298}{573}$

$\eta =\frac{275}{573}=0.4799$

i.e. $47.99 %\approx 48 %$

No it is not possible to achieve this efficiency because carnot engine is the ideal engine so practically it is not possible but theoretically it is possible