CLOSED LOOP SOLAR
THERMAL SYSTEM
In this schematic. Solar
Energy is collected by an array made up of Flat-Plate Solar
Collectors. The Heat Transfer Fluid, non-toxic glycol,
flows through the Dual-Coil Solar Tank. The tank contains
the Domestic Hot Water Supply. If there is not enough solar
energy to heat the water to the desired temperature, the
boiler fires and circulates hot water through the tank's
upper coil, insuring constant hot water for the home. In
this schematic, the boiler is also providing for a Hydronic
Heating System. We have installed many systems of this kind
with very favorable results. Using a Wall Hung Boiler, such
as a Viessmann Vitodens, and a Single Tank with 2) Heat
Exchanger Coils, the installation can be very compact.
Typically, in Southern California, systems of this type
accomplish about 85% of Domestic Hot Water Production via
Solar with the Boiler making up the difference at very high
efficiency.