Thermal storage tanks with two heat exchangers

2 heat exchangers

— the presence of two heat exchangers in the device allows you to connect two additional thermal circuits to it simultaneously. At the same time, the format of the operation of these circuits may be different, depending on the model; it should be clarified according to the manufacturer's documentation. However, often one heat exchanger works "to output" heat (for example, to heat water for a hot water supply system), and the second "to input" (for example, to connect a solar collector or other additional heater).