Energy Saving Techniques in Cooling Towers

If a cooling tower is installed on your site/office/working location, then you must be concerned about the consumption of electricity by the equipment. If you’re, the here are some points to remember which may help you cut energy cost to come extend.

• Follow suggested clearances around cooling tower by its manufacturers.

• Relocate or modify structures that create disturbance with the air intake or exhaust.

• Optimize the blade angle of cooling tower on the basis of load or changing season.

• Check fan blade tip and fan balance

• Replace old spray type nozzles with new spray on old cooling towers.

• Keep an eye on nozzles to obtain a more uniform water pattern

• Clean cooling tower distribution nozzles at regular intervals.

• Cover and clean hot water basins to minimize algae growth that contributes to fouling.

• Personalize blow down flow rate, as per COC limit

• Set restriction on the  flow of water through large loads to design values

• Differentiate high heat loads like furnace air compressors, DG sets and isolate cooling tower sensitive applications like A/C plants, condensers of captive power plant etc.

• Monitor L/G ratio, CW flow rates, w.r.t design as well as seasonal variations. 

It would help to increase water load during summer and times when cooling approach is high and increase air flow during monsoon times and when approach is narrow.

• Consider COC improvement measures for water savings

• Evaluate energy efficiency FRP blade adoption for fan energy savings

• Check possible modifications on CW pumps, w.r.t efficiency improvement

• Control cooling tower fans according to leaving water temperatures especially in case of small units

• Optimize process CW flow requirements to save on pumping energy, cooling load, evaporation losses and blow down losses.

Save energy for future and for others. Its in your hand, whether to save or not...