Question: A client is considering heating systems for a 2400 ft2 residence anticipated to have an annual heating load of 90 MMBtu/year. Compute the annual cost

A client is considering heating systems for a 2400 ft2 residence anticipated to have an annual heating load of 90 MMBtu/year. Compute the annual cost of heating the building with these systems:

a. A modern, high-efficiency furnace with a seasonal efficiency of 96% that is fired with natural gas with a heating value of 103 000 Btu/CCF and a cost of $1.50/CCF.

b. A modern, high-efficiency furnace with a seasonal efficiency of 92% that is fired with fuel oil with a heating value of 140 000 Btu/gal and a cost of $3.50/gal.

c. An electric-resistance furnace with a seasonal efficiency of 100% that is electrically powered with a heating value of 3413 Btu/kWh and a cost of $0.15/kWh.

d. An air source heat pump with a seasonal efficiency* of 150% that is electrically powered with a heating value of 3413 Btu/kWh and a cost of $0.15/kWh

e. A geothermal heat pump with a seasonal efficiency* of 350% that is electrically powered with a heating value of 3413 Btu/kWh and a cost of $0.15/kWh.

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