Many renewable energy systems have thermal storage tanks that bridge the gap between when energy is available from the heating source, and when that energy is needed by a heating load.

Last month, we began with a concept for an “ideal” thermal storage tank. This tank was then shown in both a classic four-pipe configuration, as well as a newer configuration called two-pipe.  This month, we’ll look at a morphing of these two piping methods to create a three-pipe configuration. We’ll also look at options for connecting multiple thermal storage tanks together.

Thermal storage is an integral part of most hydronic systems that have renewable energy heat sources. Systems with solar thermal collectors or biomass boilers are prime examples.

Last month, we covered the concept of combining heat pumps with hydronic distribution systems. We also discussed the specifics of an air-to-water heat pump supplying multiple zones of radiant panel heating.

With nearly all government-related energy programs focused on carbon reduction, fossil fuels are increasingly viewed as the past, somewhat resentfully as the present and highly unlikely as the future.

The overlooked benefit of hydronics.

Although this is a pretty simple objective, it’s not a routine installation.

Modifying high-temperature distribution systems for lower-temperature operation.

Modifying high-temperature distribution systems for lower temperature operation.

An efficient hydronic system is more than just a high-performance boiler.