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.

Hoffman ClimaGuard Air-to-Air Outdoor Heat Exchangers utilize closed-loop cooling while sealing out dirt, dust, corrosive elements and wind-driven rain. Hoffman ClimaGuard Air-to-Air Indoor Heat Exchangers utilize closed-loop cooling while sealing out dirt, dust, corrosive elements and wash down water. Hoffman ClimaGuard Air-to-Water Indoor Heat Exchangers remove heat from an enclosure by flowing enclosure hot air across a water-cooled exchanger core.

Pfannenberg PKS 3000 Series and PKS Mini Series are air-to-air heat exchangers that remove heat from inside an enclosure to the cooler environment outside using a closed loop process. Pfannenberg PWS 3000 Air-to-Water Heat Exchangers are particularly suitable for environments where ambient temperatures are high, the atmosphere is particularly oily or in wash down areas that have high amounts of particulate.