This product is intended for applications where two air streams are not in close proximity due to design considerations, or need to be totally separated to prevent contamination of the supply air, and cannot be brought close enough to allow for regular single assembly heat exchangers. 

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Unique to heat pipe thermo-syphon systems, this technology gives the design engineer a lot of flexibility and more importantly ZERO cross contamination. And, unlike water run arounds, it comes with higher effectiveness, no moving parts and better efficiency. A typical system is comprised of 3 circuits, each circuit combines two rows of heat exchangers. Each circuit has a vapor header at the top end and a liquid header at the bottom. With a permanent elevational difference between supply and exhaust air streams, it can be optimized for the season that yields the most BTUs. In the lesser season, and depending on elevational difference, some recovery will also take place, but far less than the more dominant season. In Minneapolis, for example, that would obviously be the heating season and the opposite would be true for Phoenix, Arizona. Control valves are usually added and located on the liquid side of each circuit. When open, full recovery is taking place, when shut, no recovery is taking place. This would be utilized during economizer conditions and in extreme climates to prevent frosting on the exhaust coils. When supply and exhaust coils are on the same level, and summer as well as winter recovery are equally important, an HRM-V with a Dynamic Seasonal Offset (DSO™) system is utilized. This system will yield equal cool and heat recovery with 45% effectiveness on average when used in a 6 row system and 500 fpm air velocity. The remarkable design of this HRM-V™ product, optimizes energy recovery performance 20-35% over older side-by-side (no offset) designs. Optimized performance is achieved by using integral face dampers to direct flow through sections of the heat pipes to create an offset effect, thus enhancing performance. The dampers are controlled from a single heating/cooling changeover signal that always keeps the condenser side of the heat pipes higher than the evaporator.

Please refer to diagrams on the right for distance and elevational limitations as well as sensible Effectiveness.

 

This Product is Ideal for:

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