Heat bank design

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Heat Bank Concept Sheet

http://wiki.cs.earlham.edu/images/6/67/Heat_bank.jpg

Copper Coil Schematic

http://wiki.cs.earlham.edu/images/0/06/Heat_Exchanger_Schematic.GIF

By nesting two copper coils in this way we can fit over 80 feet of 3/4" pipe into a 2 ft. cube. The outer coil will have a diameter of 2 ft. with 8 loops giving us 2*3.14*8 = 50.24 ft. of pipe. The inner coil will have a diameter of 1.5 ft. also with 8 loops giving us 1.5*3.14*8 = 37.68 ft of pipe. Our calculations indicate that this will provide us with a significant increase in the temperature of the main water before it enters the electric hot water heater.

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