Free Hot Water,solar,woodstove or furnace |
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utilizing wasted energy
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Free Hot waterUPDATE - We appear to have cut our Hydro use by 30 to 50$ a month since this heatcoil |
I I have often wondered why we have to heat our water 24/7. Well we have a combination wood/oil furnace and there is always been heat go up the chimney so why not capture some heat somehow ?Well even worse is we pipe water into our homes at 45 to 50 F and our water heaters heat it to approx 135 F 24 hours a day using alot of energy to do this . We never use straight hot water to wash with as it would be too hot. Our dishwasher uses hot water at this temp and our clothes washer uses water at various temps depending on the setting used. Bottom line is you heat more water than is needed and for longer period than it is used as well as at a temperature that is for the most part more than you need.Solution ? A tankless water heater? Sure but they draw alot of current and not all homes have the electrical capactiy to accomadate this.Why not use a extra tank in your system before the water heater? That way the 45 F water now preheats to 70 F so that you use less energy to heat water from 70 to 135F rather than from 45 F ? I call this a tempering tank and is simple.What I did was put a copper loop or coil shown on right here on top of heat exchanger in the hot air plenum of our Newmac wood/oil furnace. We have done the same at our Sauna as well .
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Copper Pipe 1/2 " Coil |
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Convection heating with no Pump
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