Energy Recovery Heat Pipes Features
- Passive Operation
No energy input is required to operate the heat pipes. When two air streams pass through the heat pipe, with one air stream through one side and the other air stream through the other side, the temperature difference between the two air streams activates the Heat Pipes and causes them to exchange heat by "heat pipe action". Heat Pipe action is a much more powerful heat transfer mechanism than convection flow. Heat pipe action utilizes the heat capacity available when the working fluid changes phase, from a liquid to a vapor and back again.
There is nothing in the heat pipes to wear out! The heat pipes are passive. They have no moving parts (unless they come equipped with a bypass damper). To guard against corrosion, the heat pipes can be ordered with a protective coating. The heat pipes are fabricated with a plurality of charged circuits. Under normal operations, there is no reason for these ever to leak. If some inadvertent mechanical damage were to occur on one circuit to cause it to leak, there would be little effect on performance even if the leak was not repaired. Furthermore, because the tubes in Heat Pipe Technology heat pipes are copper, leaks can be repaired. Most other energy recovery heat pipes are fabricated with aluminum tubes, which are very difficult to repair.
- Isolated Air Streams
Partitions to separate the two air streams are an integral part of Heat Pipe Technology 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.
- Minimum Maintenance
Since the heat pipes have no moving parts (except for optional bypass dampers), the only maintenance recommended is periodic cleaning. A coil cleaner may be applied for this purpose just as for any cooling coil.
- Minimum Size
Energy recovery heat pipes from Heat Pipe Technology 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 pipes normally fabricated with a thickness of 9 inches.