a)
Heating Cost
=$0.678/ft2 =$ 0.68 /ft2
b)
Savings per season=0.68-8210.5263*(10/106)=$ 0.596 /season
Payback time =0.4/0.596 =0.671 seasons =0.7 seasons (approx)
If there are 6500 degree-days in this area, and the price of fuel is $10 per...
A 2,200 ft2 home with a poorly insulated ceiling is in an area with an 10-month heating season with an average outdoor temperature of 30 oF and an average indoor temperature of 80 oF. If the owner spends $1000 on insulation, the R-value of the ceiling can be raised from 15 to 40 (ft2-oF-hr/Btu). The house is heated at 9 cents/kWhr. 1.How much money would the owner expect to save each year? 2.How long until the energy savings pay for...