Q. 21

Expert-verified
Found in: Page 595

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# An air conditioner removes of heat from a house and exhausts to the hot outdoors.a. How much power does the air conditioner’s compressor require?b. What is the air conditioner’s coefficient of performance?

(A) Air conditioner's require

(B) Air conditioner coefficient of performance

See the step by step solution

## Step :1 Introduction  (part a)

(a) For a time of we have . The corresponding powers are therefore

is the power at which heat is removed and is the power at which heat is thrown into the environment . It will be sum of heat extracted and electrical power used up.

The power used up by the system can be calculated by

## Step :2 Explanation (part b)

(b) The coefficient performance can be calculated as

K

Numerically we will have