Solar Domestic Hot Water
Our Solar Collector array consists of three Heliodyne Gobi 3366 liquid solar collectors (27 square feet each) mounted on an outbuilding. These are among the most efficient thermal collectors made. The non-toxic propylene glycol coolant cycles in a closed loop to the house where it exchanges heat with our hot water tank. Though much smaller than our solar PV array, our solar domestic hot water collector array can collect just as much energy, over 25 kWh (88,000 BTU) per day.
We have an American Solar Electric Hot Water Heater in series with our propane hot water heater. (Though it has a 4500 watt electrical element, it is currently not connected to any electrical power,but may be in the future).