A power plant produces 1 gw of electricity at an efficiency, Ask an Expert

Accounting

A power plant produces 1 GW of electricity, at an efficiency of 40% (typical of today's coal-fired plants).

(a) At what rate does this plant expel waste heat into its environment?

(b) Assume first that the cold reservoir for this plant is a river whose flow rate is 100 m3/s. By how much will the temperature of the river increase?

(c) To avoid this "thermal pollution" of the river, the plant could instead be cooled by evaporation of river water. (This is more expensive, but in some areas it is environmentally preferable.) At what rate must the water evaporate? What fraction of the river must be evaporated?

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Accounting Basics, Accounting

Category:- Accounting Basics
Reference No.:- M91735036

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