An outdoor swimming pool operates during the summer months in the Midwest for 14 weeks. Water in the pool is heated to maintain a constant temperature using a natural gas heater. An electric pump is used to circulate water in the pool and is used only when the heater is on. To reduce heat loss to the surroundings, the owner is contemplating installation of a pool blanket. Additional facts are:
Blanket cost: $310.00, Yearly interest rate: 8 %
Tax bracket: 35 %, Length of analysis: 12 years
Natural Gas Electricity
Savings, MBtu/yr 150.00 4.30
Price, $/MBtu 3.00 30.75
Inflation rate, % 6 6
Efficiency, % 70 70
(The fuel prices do not include the efficiencies.)
Determine:
(A) Incremental capital costs,
(B) Values of annual fuel savings for natural gas and electricity and total annual fuel savings,
(C) Simple payback time, and
(D) Net present value of discounted profits.