MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
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In the solar energy budget shown; B D Cloud A Atmosphere F H E Land Sea How much in percent is the albedo for combined sea and cloud? A=19 B=5 C=10 D=3 E=40 F=6 G=10 H=7
A home is heated with propane with a 100,000 BTU furnace size and 95% efficiency. The monthly heating degree days is 5000. Using the energy estimation discussed in this chapter, estimate the monthly and annual gas consumption to heat the building if the home is to be kept 68°F.
The annual average insolation for a fixed solar panel in city A is 350 W/m2. On the other hand, city B has a figure of 300 W/m?. For both locations, the solar panel has the capability to convert 17% of the incident energy into electricity. Average annual electricity in City A is 13 000 kWh with an average cost of $0.4/kWh, while in city B, it is 10 000 kWh at a cost of $0.75/kWh. For City A, a. Determine the area of the solar panel needed in order to suffice the average electrical needs of a residence. b. Determine the area of the solar panel needed in order to suffice the average electrical needs of a residence in City B. c. Determine the price per square meter of solar panel in City A if the device has a lifetime of 20 years. Assume that the electricity costs are constant throughout the period. d. Determine the price per square meter of solar panel in City B if the device has a lifetime of 20 years. Assume that the electricity costs are constant throughout the period.
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