Question

A power plant generates 150 MW of electrical power. It uses a supply of 1000 MW from a geothermal source and rejects energy to the atmosphere. Find the power to the air and how much air should be flowed to the cooling tower (kg/*) if its temperature cannot be increased more than °C.

Answer 1

C.V. Total power plant.

Energy equation gives the amount of heat rejection to the atmosphere as

The energy equation for the air flow that absorbs the energy is

Probably too large to make, so some cooling by liquid water or evaporative cooling should be used.