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Item Replaced 14 CFL bulbs, each 23 watts Phantom loads amounting to 30 watts Chest freezer Refrigerator Daily Energy Consumption of New Product 1.3 kWh (when on 4 hours per day) 0 Daily Energy Consumption of Old Product 5.6 kWh (when on 4 hours per day) 0.7 kWh Amount of Energy Cost of Saved Each Day Replacement 4.3 kWh $28 0.7 kWh $5 0.7 kWh 1.8 kWh 1.1 kWh $350 0.9 kWh 2.2 kWh 1.3 kWh $650

Item Replaced 14 CFL bulbs, each 23 watts Phantom loads amounting to 30 watts Chest freezer Refrigerator Daily Energy Consumption of New Product 1.3 kWh (when on 4 hours per day) 0 Daily Energy Consumption of Old Product 5.6 kWh (when on 4 hours per day) 0.7 kWh Amount of Energy Cost of Saved Each Day Replacement 4.3 kWh $28 0.7 kWh $5 0.7 kWh 1.8 kWh 1.1 kWh $350 0.9 kWh 2.2 kWh 1.3 kWh $650

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A  home  energy  audit  recommends  replacing  14  lightbulbs,  disconnecting  several  phantom  loads  (using  a  power  strip),  and  purchasing  a  more efficient refrigerator and chest freezer, as indicated in table at bottom of the page.

a. Determine the annual reduction in energy consumption (in kWh) after making the  indicated  changes.

b. If electricity costs $0.12/kWh, calculate the annual savings.

c. How long will it take for the annual savings to pay off the cost of replacement?

Item Replaced 14 CFL bulbs, each 23 watts Phantom loads amounting to 30 watts Chest freezer Refrigerator Daily Energy Consumption of New Product 1.3 kWh (when on 4 hours per day) 0 Daily Energy Consumption of Old Product 5.6 kWh (when on 4 hours per day) 0.7 kWh Amount of Energy Cost of Saved Each Day Replacement 4.3 kWh $28 0.7 kWh $5 0.7 kWh 1.8 kWh 1.1 kWh $350 0.9 kWh 2.2 kWh 1.3 kWh $650
Transcribed Image Text:Item Replaced 14 CFL bulbs, each 23 watts Phantom loads amounting to 30 watts Chest freezer Refrigerator Daily Energy Consumption of New Product 1.3 kWh (when on 4 hours per day) 0 Daily Energy Consumption of Old Product 5.6 kWh (when on 4 hours per day) 0.7 kWh Amount of Energy Cost of Saved Each Day Replacement 4.3 kWh $28 0.7 kWh $5 0.7 kWh 1.8 kWh 1.1 kWh $350 0.9 kWh 2.2 kWh 1.3 kWh $650
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