The purpose of a cooling tower or condenser system is to reuse water and reduce water usage. Determining the conductivity set point of the water systemis important to maximumyour water reuse. Conductivity is the electrical resistance measurement of the dissolved solids, suspended solids, and dissolved gases of the water and is expressed in mico ohms (uomhs).
Corrosion inhibitors and scale prevention chemicals are used to maximize the number of cycles the water is used. The definition of cycles is the number of times the water is reused in the water system.
For example, if the makeup water to the cooling tower is 100 uomhs and your tower recirculating is 800 uomhs, your cycles are calculated as follows: Cycles = Cooling Tower Recirculating Conductivity / Cooling TowerMake-up Water
For this Example: Cycles = 800 uomhs / 100 uomhs or 8 Percent blowdown for the tower is calculated the following way:
Percent Blowdown = ( 1 / Cycles) x100 For this Example: Precent Blowdown = (1/8) x100 = 12.5%
This means 12.5% of the water is being lost to blowdown.
Knowing your tower cycles is important for minimizing water usage and reducing the amount of water lost to blowdown. Determining proper cylces or conductivity set point is dependent on the water alkalinity and calcium. Every systemis unique.
Corrosion inhibitors and scale prevention chemicals are used to maximize the number of cycles the water is used. The definition of cycles is the number of times the water is reused in the water system.
For example, if the makeup water to the cooling tower is 100 uomhs and your tower recirculating is 800 uomhs, your cycles are calculated as follows: Cycles = Cooling Tower Recirculating Conductivity / Cooling TowerMake-up Water
For this Example: Cycles = 800 uomhs / 100 uomhs or 8 Percent blowdown for the tower is calculated the following way:
Percent Blowdown = ( 1 / Cycles) x100 For this Example: Precent Blowdown = (1/8) x100 = 12.5%
This means 12.5% of the water is being lost to blowdown.
Knowing your tower cycles is important for minimizing water usage and reducing the amount of water lost to blowdown. Determining proper cylces or conductivity set point is dependent on the water alkalinity and calcium. Every systemis unique.
Warkin Equipments Pvt. Ltd. is a Manufacturers & Exporters of Oil Chillers, Oil Coolers, Air oil coolers & Water coolers in India.
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ReplyDeleteThe purposes of cooling tower chemicals are to prevent scale, minimize corrosion, and reduce bacteria. The ultimate goal is to reduce water usage, save on energy and to extend equipment life. Thanks...
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