Animated Diagrams with TSV B
A simple heating system with a fireplace insert or boiler with no thermostatic valve. In such a system, vapor condensation may occur. Cold water returning to the boiler causes aggressive condensate to appear on heat transfer surfaces of the boiler. This condensate contains combustion products that can be very aggressive namely when wood or solid fuels are burnt, causing tarring – fouling of the boiler’s heat transfer surfaces and their corrosion. Fouled heat transfer surfaces deteriorate substantially the boiler efficiency and the boiler will soon be subject to corrosion.
A heating system with a fireplace insert or boiler and with a thermostatic mixing valve. TSV thermostatic mixing valves mix cool return water from a heating system with hot water from the boiler outlet. This way the whole heat exchanger (heat transfer surfaces) is kept warmer, at temperatures that will not allow condensation to occur which will extend the lifetime of the boiler and increase its efficiency.
A heating system with a TSV B thermostatic mixing valve and an accumulation tank. Heating water heats up the accumulation tank that keeps the heat and lets it into the heating system just in amounts needed for space heating. The building gets not overheated, and when a suitably sized accumulation tank is used together with an intelligent controller, almost the same heating comfort is reached like with switched sources (gas-, oil- or electric fired boilers etc.). In this case, the source always works within its nominal parameters, i.e. with the highest possible efficiency, which brings not only high savings on heating costs but also a substantially longer service life of the boiler.