nVent Hoffman Enclosure Heat Exchangers
Air-to-air heat exchangers deliver convection cooling to heat producing electrical equipment using a closed loop cooling system. The closed loop design cools and recirculates the air inside an electrical enclosure, while isolating electrical components from environments that may contain contaminants.
The air-to-air heat exchangers utilize copper heat pipes surrounded by extruded fins. The fins increase the surface area allowing faster heat absorption and dissipation. The copper pipes contain a phase changing liquid that absorbs heat from the heated enclosure where it is then converted to vapor. The heated vapor automatically moves to the cooler end of the heat pipe, which is exposed to the cooler ambient air outside the enclosure.
The excess heat is expelled out and the vapor is changed back into liquid, which then moves back towards the warmer end of the heat pipe. The heating and cooling process repeats continuously. Air-to-water heat exchangers use the same principle of temperature differential, but they alter the internal air temperature by forcing air across water coils.
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