Cooling of fresh air through conventional Treated Fresh Air unit (TFA) or Fresh Air Handling Unit (FAHU) is a highly energy intensive process, but our two stage air washer meets this requirement in the most energy efficient manner. This system has Indirect Evaporative Cooling (IEC) at the 1st stage for sensible cooling and then a cooling coil (DX/CW) at the 2nd stage. By incorporating IEC at the 1st stage of the Treated Fresh Air systems (TFA), substantial energy savings can be gained.
In double stage air washer, air is primarily cooled sensibly by indirect cooling. As no humidity is added in this pre cooling so it can be cooled by direct by evaporative cooling. So now this air is passed through evaporative cell pad section.
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