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A Thermosyphon Run Around Heat Pipe (TRAHP™) is an energy-efficient device used to transfer heat from a warm point to a cooler point. Carolina Heat Pipe's TRAHP™ is a simple passive reheat system consisting of two uniquely configured Heat Pipe Thermosyphon coils which are positioned on either side of your cooling coil. Heat is transferred from the entering side of the cooling coil to the leaving side by means of the natural heat pipe thermosyphon process in which refrigerant boils on the entering side and condenses on the leaving side. A compressor is not used and the only moving part is the control valve.

Carolina Heat Pipe applies Variable Refrigerant Flow Technology (VRFT) to regulate the heat transfer between the precool Heat Pipe section and the reheat Heat Pipe section to provide the desired reheat for dehumidification while avoiding the addition of extra cooling load resulting from excessive reheat. VRFT is also utilized by CHP for frost control during winter operation by turning off the heat transfer in an Energy Recovery Heat Pipe System when the outside air temperature would cause the exhaust air to freeze and create blockage of the exhaust air flow.

When incorporated into an air handler, the TRAHP™ will remove more moisture using less energy while lowering the relative humidity to provide a healthier, more comfortable environment.


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