# Heat bank design

(Difference between revisions)
 Revision as of 15:50, 2 October 2006 (view source) (→Copper Coil Schematic)← Older edit Revision as of 00:39, 28 November 2006 (view source)Coppoda (Talk | contribs) Newer edit → Line 8: Line 8: 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, for a total of 87.92 ft.  Our [http://wiki.cs.earlham.edu/index.php/Heat_exchanger_modeling 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. 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, for a total of 87.92 ft.  Our [http://wiki.cs.earlham.edu/index.php/Heat_exchanger_modeling 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. + + ==The Finished (almost) Product== + http://wiki.cs.earlham.edu/images/6/60/DSCN2661.JPG

## Copper Coil Schematic

(please note that the it should read "one 1.5 and one 2 foot diameter" in the figure above)

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, for a total of 87.92 ft. 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.