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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A power plant has been proposed that would make use of the temperature gradient in the ocean. The system is to operate between 20.0°C (surface water temperature) and 5.00°C (water temperature at a depth of about 1 km). (a) What is the maximum efficiency of such a system? (b) If the useful power output of the plant is 75.0 MW, how much energy is absorbed per hour? (c) In view of your answer to part (a), do you think such a system is worthwhile (considering that there is no charge for fuel)?

(a)

To determine
The maximum efficiency of the system.

Explanation

Given Info:

The cold reservoir temperature is 5.00°C .

The hot reservoir temperature is 20.0°C

Formula to calculate the maximum efficiency of the system is,

ec=1TcTh

  • Tc is the temperature of cold reservoir,
  • Th is the temperature of hot reservoir,

Substitute 20.0°C for Th and 5

(b)

To determine
The energy absorbed per hour.

(c)

To determine
whether such a system mentioned in (a) is worthwhile.

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