Solved: The energy contents, unit costs, and typical
Chapter 2, Problem 2110E(choose chapter or problem)
The energy contents, unit costs, and typical conversion efficiencies of various energy sources for use in water heaters are given as follows: 1025 Btu/ft3 , $0.012/ft3 , and 85 percent for natural gas; 138,700 Btu/gal, $2.2/gal, and 75 percent for heating oil; and 1 kWh/kWh, $0.11/kWh, and 90 percent for electric heaters, respectively. Determine the lowest-cost energy source for water heaters.
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