Heat Pipe Technology Energy Recovery - Side By Side
Heat Pipe Technology HRM™ Series
Energy Recovery Heat Pipes
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Energy recovery heat pipes from Heat Pipe Technology (HPT) provide economical and reliable heating and cooling recovery.
For years, energy recovery heat pipes have used relatively large diameter tubes because single tubes must handle vapor flowing in one direction and liquid flowing in the opposite direction simultaneously. HPT utilizes a loop circuit that allows for equal heating and cooling recovery (see HRM-H™) or optimization for heat or cooling recovery while still allowing for appreciable recovery the rest of the time (see HRM-Z™).
HPT’s circuit design accomplishes heating and cooling recovery without a tilt mechanism or any other seasonal changeover procedure. To utilize this bi-directional energy transfer feature, the air streams should be arranged side-by-side as in A and B, or with one directional energy transfer featuring over-and-under as C.
- A: Side-by-side horizontal air streams with heat pipes in a vertical plane (HRM-H™)
- B: Side-by-side horizontal air streams with heat pipes in a vertical plane optimized for heat or cool recovery (HRM-Z™)
- C: Over-and-under horizontal air streams with heat pipes in a vertical plane (HRM-O™)
Passive Operation
Operating the heat pipes requires no energy input. Heat pipe action utilizes the heat capacity available when the working fluid changes phase from a liquid to a vapor and back again.
Durability
There is nothing in the heat pipes to wear out! The heat pipes are passive and fabricated with a plurality of charged circuits. Under normal operations, there is no reason for these ever to leak. Furthermore, users can quickly repair leaks because HPT heat pipe tubes are copper. Most other energy recovery heat pipes use aluminum tubes, which are difficult to repair.
Isolated Air Streams
Partitions to separate the two air streams are integral to HPT energy recovery heat pipes. The copper tubes carrying the heat pipe working fluid are expanded into the mating holes in the partitions, assuring an excellent seal to prevent cross-contamination. HPT can also provide heat exchangers with a foam-filled separation for added assurance in critical applications. HPT heat pipes are certified “zero EATR” (Exhaust Air Transfer Rates).
Minimal Maintenance
Since the heat pipes have no moving parts, the only maintenance recommended is periodic cleaning with a coil cleaner, just as for any cooling coil.
Smallest Footprint
Energy recovery heat pipes from HPT take up much less space than other energy recovery schemes. Generally, they are also considerably thinner than other heat pipes. (A six-row energy recovery heat pipe has a usual thickness of 9 inches.)
Fast Project Payback
HPT heat pipes are economical because of their low initial cost and minimum maintenance requirement, leading to a minimal payback time on your investment.