Carolina Heat Pipe Patented Split System Heat Recovery TRAHP™ (SS HR TRAHP™) brings a new capability to the use of Heat Pipe Science for Energy Recovery. By consolidating the performance of multiple heat pipes with interconnecting run around headers, Carolina Heat Pipe can transfer heat with minimal location restrictions. This SS HR TRAHP™ development allows us to incorporate Split System Heat Recovery into heating, ventilating and air conditioning systems. The SS HR TRAHP™ allows the system designer more options with heat pipe layout, for example the heat pipe coils can be turned and or separated by several feet to strategically place them where needed. This new development ELIMINATES earlier conventional heat pipe placement restrictions because split system TRAHP™ heat transfer surfaces are separated by refrigerant charged headers. The heat transfer process can be controlled with an on off signal or a full modulating signal from a modern control system.

Carolina Heat Pipe SS HR TRAHP™ system utilizes heat pipe technology to safely transfer heat energy from one air stream to another such as heat energy from laboratory exhaust transferred to the make-up air handler.  By consolidating the performance of multiple heat pipes with interconnecting run around headers, Carolina Heat Pipe can transfer heat energy without the risk of cross contamination.
The SS HR TRAHP™ is a simple passive reheat system consisting of two uniquely configured Heat Pipe Thermosyphon coils typically positioned in two opposing air streams. Heat is transferred from the warm air stream to the cooler air stream by means of the natural heat pipe thermosyphon process in which refrigerant boils in the warm air side and condenses in the cooler air side. This is an adiabatic process and continues so long as there is a temperature difference between the two air streams. This heat pipe process is considered passive – no pump, compressor or external energy input required. 

The SS HR TRAHP™ development allows a system designer to position the energy recovery coils in separate air streams some distance apart. The connecting piping between the coils should be arranged as short as possible up to a maximum equivalent pipe length of 100 feet. The heat pipe coils can be arranged opposing each other, 90 degrees to one another and even placed over / under each other. Certain layouts can render the energy recovery system to operate in only 1 season, such as winter preheating. The vertical tube thermosyphon coil eliminates distance restrictions of earlier conventional horizontal tube heat pipe coils. 

The SS HR TRAHP™ is available with our full modulating control valve which provides for frost protection and the ability to switch off the system during airside economizer conditions.

Projects using SS HR TRAHP™…
US Naval Air Station Meridian
Eurand Pharmaceutical

Wright State University

SS HR TRAHP™ is UL Listed 1995

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