Cooling

Brush-type heat exchangers in cooling applications

The advantages of using brush-type heat exchangers in cooling applications include quiet operation resulting from the low pressure loss, the efficient cooling performance that results from effective heat exchange, and good compatibility with different refrigerants. Hydrocell brush-type heat exchangers can be used with water-cooled solutions and steam vaporizers.

When the temperature of the cooling fluid is below 0°C and the air contains moisture, most cooling elements and vaporizers suffer from problems caused by icing. A basic characteristic of brush-type heat exchangers is that they do not ice up easily. When ice does begin to form, it only collects around the pipe, not on the surface of the brush filaments. The length of the brush filaments that act as heat-exchange fins has been optimised to ensure that ice will not form on their surface. As the filaments form a permeable structure which provides very effective cooling, the air being cooled will always make its way through the cooling element without a significant increase in the driving pressure.

This feature of brush-type cooling elements means that the frequency of de-icing required is much lower than is the case with lamellar elements.

Non-freezing evaporator constructed using brush-type heat exchangers

Brush-type heat exchangers can easily be used to construct both round and rectangular cooling elements and condensers.

HC-900 Cool Air ceiling unit being used to cool an office.

Passive condenser column constructed from brush-type heat exchangers.