University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 17 - Temperature and Heat - Problems - Discussion Questions - Page 574: Q17.28


No, the argument doesn’t make sense. More energy is consumed if the house is kept at constant temperature.

Work Step by Step

In winter, a warm house loses heat at a higher rate than a cooler house. In a 24-hour period, a house at constant temperature loses more heat to the cold outdoors than a house whose thermostat is turned down at night. The furnace must replace all of this heat. Summary: in following the magazine’s advice, the energy usage in the morning decreases, but the usage at night increases greatly, and overall, more energy is used. Note: this advice might make sense economically if the night utility rates are lower.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.