engineeringThe energy contents, unit costs, and typical conversion efficiencies of various energy sources for use in water heaters are given as follows: $102 \mathrm{Btu} / \mathrm{ft}^3, \$ 0.012 / \mathrm{ft}^3$, and 55 percent for natural gas; $138,700\ \mathrm{Btu} / \mathrm{gal}, \$ 1.15 / \mathrm{gal}$, and $55$ percent for heating oil; and $1 \mathrm{kWh} / \mathrm{kWh}, \$ 0.084 / \mathrm{kWh}$, and $90$ percent for electric heaters, respectively. Find the lowest-cost energy source for water heaters. 7th Edition•ISBN: 9780323087896 (1 more)Julie S Snyder, Linda Lilley, Shelly Collins388 solutions
7th Edition•ISBN: 9780323402118Gary A. Thibodeau, Kevin T. Patton1,505 solutions
2nd Edition•ISBN: 9781449648268Kathryn H Jacobsen116 solutions
11th Edition•ISBN: 9780321910424 (2 more)Rebecca J. Donatelle249 solutions