Air Washers :
These units are MS internally lined with FRP or in galvanised iron construction. These are useful for those areas, which are moderately dry. Expected saturation efficiency of these units is upto 98%. The advantage of this Air Washer unit is that there is no atomisation of water. Hence, pumps of lower horse powers can be used. Also due to the absence of water spray normaltype of Mist Eliminators are not required. Special Evaporative Cooling Pad (ECP) are used for transfer of heat. The ECP matrix is wetted with water droplets and air stream is at right angles to this water flow. This helps in mixing of both the streams and results in air cooling based on psychrometric principle.
It is observed that for dry areas the drop in temp. at the exit of the Air Washer is as much as 10 0C to 12 0C from the ambient. These are available in different sizes. It is recommended that the units be externally thermal insulated to achieve better performance. For corrosive atmosphere, units can be offered in plastic construction, such as FRP. The Air Washer unit is factory assembled complete with water piping, water tank, float valve,strainer and receiver valves. The air connections on the inlet and outlet side are suitably flanged for ducting. |
