Last month Prof Smiths house used 150 kWh of electricity and

Last month, Prof. Smith\'s house used 150 kWh of electricity and 6.1 decatherms of natural gas. Estimate Primary energy consumption associated with purchased electricity Primary energy consumption associated with gas burned on site

Solution

Ans) 1kWh= 3.6MJ=3600000 Joules of Energy

a) 150 kWh= 150*3.6= 540 MJ of Energy

1 therm=105.5 MJ of enregy and decatherm = 10 therms

b)

6.1 decatherms= 61 therms=61*105.5=6435.5 MJ of Energy