Acertain solar energy collector produces a maximum temperature of 100°c. the energy is used in a cyclic heat engine that operates in a 10°c environment. what is the maximum thermal efficiency? what is it if the collector is redesigned to focus the incoming light to produce a maximum temperature of 300°c?

Given:

operating temperature of heat engine,

Solution:

For a  reversible cycle, maximum efficiency, is given by:

Now, on re designing collector, maximum temperature, changes to , so, the new maximum efficiency,   is given by:

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explanation:

answer:

explanation:

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