Solve it correctly please. I will rate. A homeowner is considering these heating systems for heating his house: Electric resistance heating with $0.12/kWh and 1kWh = 3600 kJ, gas heating with $1.38/therm and 1 therm = 105,500 kJ, and oil heating with $2.3/gal and 1 gal of oil =138,500 kJ. Assuming efficiencies of 100 percent for the electric furnace and 87 percent for the gas and oil furnaces,determine the heating system with the lowest energy cost.The unit energy cost of natural gas heater is $× 10-6/kJ.The unit energy cost of heating oil heater is $10-6/kJ.The unit energy cost of electric heater is $10-6/kJ.The heating system with the lowest energy cost is natural gas heater v

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Answered: A homeowner is considering these…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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1)Can the combined turbine-generator efficiency be greater than either the turbine efficiency or the generator efficiency? Explain 2) On a hot summer day, a student turns his fan on when he leaves his room in the morning. When he returns in the evening, will the room be warmer or cooler than the neighboring rooms? Why? Assume all the doors and windows are kept closed. 3) Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. During the process, 30 kJ of heat is transferred to the water, and 5 kJ of heat is lost to the surrounding air. The paddle-wheel work amounts to 500 N · m. Determine the final energy of the system if its initial energy is 10 kJ. 4) Consider a hooded electric open burner in an area where the unit costs of electricity and natural gas are $0.07/kWh and $1.20/therm, respectively (Noting that 1 therm = 29.3 kWh) . The efficiency of open burners can be taken to be 73 percent for electric burners and 38 percent for gas burners.…
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