Question No 4:A 4-kW resistance heater in a water heater runs for 2 hours to raise the watertemperature to the desired level. Determine the amount of electric energyused in both kWh and kJ.

Given Data : Power of heater(P)=4 KW Time(t)=2 hours

Answered: A 4-kW resistance heater in a water…

A 4-kW resistance heater in a water heater runs for 2 hours to raise the w temperature to the desired level. Determine the amount of electric energ used in both kWh and kJ.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 27RQ: How many Btu/h would be produced in a 12-kW electricheater?

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