Spray pond

The primary purpose of spray pond design is thus to ensure an adequate degree of contact between the hot injection water and the ambient air, so as to facilitate the process of heat transfer.

The spray pond is the predecessor to the natural draft cooling tower, which is much more efficient and takes up less space but has a much higher construction cost.

Ideally, the chosen nozzles should provide a fine, evenly distributed spray in conical form, be capable of passing small particles of suspended matter without blocking and be readily dismantled for cleaning.

The width chosen for a drift channel around the active zone of the pond (containing the sprays) is dependent on a number of factors, including the prevailing wind strength, the average size of the spray droplets produced by the nozzles, and the presence of any nearby structures which may be sensitive to fogging or water drift, such as roads, houses, etc.

In order to be most effective in terms of heat transfer, spray ponds should always be oriented with their longer sides at right angles to the direction of the prevailing wind.