![]() This maximizes heat transfer by forcing the coolest fluid to continuously flow toward the hottest part of the heat exchanger. Counterflow means that the hottest fluid entering Side A of the heat exchanger flows toward the coolest fluid entering from Side B on the opposite end of the heat exchanger (see illustration above). It is important to plumb a heat exchanger in “counterflow” rather than in “parallel”. Regardless of which radiant heating system you choose, be it Open, Closed Or heat exchanger, or type of fuel source you require, Propane, Natural gas, Electric or Oil,…Radiant Floor company has you covered!!! The Heat Exchanger System with a Tank-Type Water Heater We offer units that will heat both your Radiant (space heating) and domestic hot water. These highly efficient heaters are built with Radiant heating in mind. The important point to understand is that most of the time heat exchangers are not essential in a radiant system.ĮVERY heating unit that Radiant Floor company recommends and offers is “DESIGNED & RATED FOR SPACE HEATING”! These units are not your “typical” water heaters, so don’t let the compact size fool you! All of our heating units are manufactured to an industry standard of quality and reliability. Solar collectors almost always use antifreeze, so a heat exchanger is necessary in this application also. If you’re sending water through a buried insulated pipe above the frost line, antifreeze is essential. Heating a remote building may be another example. In this scenario, you can drain the domestic water system if you leave for weeks in the winter and the antifreeze protects the heating system. Heating a second home in a remote location prone to power outages would be a perfect profile for a heat exchanger system. Of course, water has a nasty habit of freezing at temperatures below 32 degrees and in some situations this reality far outweighs the negatives of using a heat exchanger. Overall, a heat exchanger system is 10 to 20% less efficient than an open system. In addition, antifreeze as a heat transfer medium is inferior to plain water. Nevertheless, any heat radiating from the heat exchanger is thermal energy that could have gone to your floors. Quite often, the heat exchanger is insulated to minimize this effect. The heat exchanger itself becomes warm and radiates into the surrounding air, though sometimes this heat helps warm a living space…even if that space is only a utility room. ![]() ![]() ![]() Transferring heat from one medium to another (in this case, from potable water to antifreeze via the heat exchanger) costs BTU’s. An example of a Radiant & baseboard / fan coil design.Ī heat exchanger system using antifreeze can protect the radiant heating system down to -60 below zero. ![]()
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