Newbie question - Storage tank -Old propane tank?
Hi all ...great forum here. As a newbie to it ...I have a question that is a carryover from research on putting in a wood boiler heating arrangement. Because of some concerns I have on the boiler system designs (cost for one) ....there is one element that is a common solution in those systems for heat storage. Used propane tanks are used a lot to store heated water for later use. They are generally installed in a pressurized way and then put in a well insulated environment to keep the heat in them .....could this be used with a solar water heat source system taking the place of the boiler? These tanks can be had with small to large capacities and I personally know where I can get a 360 gallon ...and probably a 500 gallon tank for little to nothing (I am located in Tennessee). Since the water storage tanks are a large expense in the solar water heat systems as well .....it could be a way to reduce paypack time on this type of installation. I plan to use the hot water for radiant heat as well as potable water ...the water in the propane tank would be in the closed loop for the radiant heat ...heated by a heat exchanger, then the potable water would also be heated by a heat exchanger in a gas hot water tank with the gas as backup. I haven't got it all figured out yet ....but would like to know if I could expect something like 4 solar collectors to take care of heating all this water ....and if the propane tank could be a part of the design of the system. Again the gas water heater would be the fallback when the solar was not filling the need. Thx, RH
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