Question

a household

А Problems 15 and 16 are based on the following description A household refrigerator runs 20 minutes in every hour and removes heat from the food compartment during this running time at a rate of 1200 kJ/h. The COP of the refrigerator is 2.1. The power the refrigerator draws when running in kW is closer to: 0.16 0.23 0.66 0.82 0.08 O 0.27 2.1 1.1 Question 16 Assuming a cost of electricity of 0.10 $/kWh, the cost in $ to operate this refrigerator per day is closer to:

Answer 1

6 runs 20 min hour Refrigerator runs In Qu hr (day) , Refrigerator rums t= 90x24 upomin Bhr Whet = 0.16KW energy consumption Bhr x 0.16 kW 1.28 kWh 0.10 $ kWh cost of electricity total cost 1.28 kb 0.10 $/kWh 0.198 $0.13