Entropy and the Second Law Video Lessons

Concept

Problem: To increase the efficiency of an ideal heat engine, one must increase which of the following?a) the amount of heat consumed per secondb) the temperature of the cold reservoirc) the temperature of the hot reservoird) the size of the cold reservoire) the size of the hot reservoir

FREE Expert Solution

The efficiency of a heat engine:

$\overline{){\mathbf{\eta }}{\mathbf{=}}{\mathbf{1}}{\mathbf{-}}\frac{{\mathbf{T}}_{\mathbf{C}}}{{\mathbf{T}}_{\mathbf{H}}}}$

Efficiency is independent of the size of the reservoir.

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Problem Details

To increase the efficiency of an ideal heat engine, one must increase which of the following?

a) the amount of heat consumed per second

b) the temperature of the cold reservoir

c) the temperature of the hot reservoir

d) the size of the cold reservoir

e) the size of the hot reservoir