Question

40 kWh of energy per gallon, determine the

approximate rate of oil consumption in your

home furnace when it’s producing heat at a

rate of 112,000 Btu/h.

Show you answer in gallons of oil per hour.

As you calculate, make sure to write out all the units and to check

they multiply together to give the correct final unit.

Be careful to convert units correctly.

Answer 1

1 Btu = 0.2931 W.h

So, 112000 Btu = 112000 x 0.2931 = 32827.2 W.h = 32.827 kWh

Now, 1 gallon oil produces 40 kWh energy in one hour.

so, 32.827 kWh energy shall be produced by 32.827 / 40 = 0.821 gallon of oil.

So, the required gallon of oil per hour is 0.821.