Cycles of concentration COC describes the relationship between the makeup water rate and the blowdown rate. An important concept related to Cooling Towers is the Cycles of Concentration also known as Cycles or Concentration Ratio.
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Cooling tower cycle. Cycles of Concentration is monitored with a conductivity meter and it is a measure of the concentration of dissolved solids in the Cooling Tower process water. These dissolved solids will therefore increase in concentration in the process water until there is a Blow-down. In general 01 of the recirculating water is evaporated for every 1 degree of temperature drop across the tower.
Cycles of concentration are important as the higher the cycles of concentration the lower the bleed will be since bleed as a percentage of feed water 1 cycles Total Water used in a Cooling Tower Evaporation Bleed Drift Leaks There are about 15 gallons of water evaporated tn of cooling. Cooling Tower Cycles of Concentration - YouTube. This eventually can lead to saturated conditions.
It is also a measure of the total amount of minerals concentrated in the cooling tower water relative to the amount of minerals in the incoming makeup water. Air enters the lower portion of the tower and contacts the water. Just as important that comparison.
The amount of water evaporated from the cooling tower is a function of the recirculation rate and cooling range. Filling In The Blanks It is important that engineers be able to compare cooling towers brands and configurations in terms of both equipment and life cycle cost. An important concept related to Cooling Towers is the Cycles of Concentration also known as Cycles or Concentration Ratio.
Higher COC is indicative of higher water use efficiency. The term cycles of concentration compares the level. As water evaporates from a Cooling Tower it leaves behind dissolved solids.
Many systems operate at two to four cycles of concentration while six cycles or more may be possible. Cooling Tower Cycles of Concentration As pure water is evaporated minerals are left behind in the recirculating water. The cycles of concentration normally vary from 30 to 80 depending on the design of a cooling tower.
It is ultimately saves the water. It is always advisable to maintain COC as high as possible to reduce make water requirement. The COC specifies how often a fresh water added into the loop can be used or pumped around before the water has to blown down or bleed off from the cooling tower.
A forced draft cooling tower the fans mounted at the base of the tower is Air enters the cooling tower at state 11. COC or the C ycles O f C oncentration is an abbreviation used when talking about cooling water or cooling tower water. As evaporation continues the water becomes more concentrated than the original make up water.
The flow diagram of the process is shown in Fig. The simulation of an advanced cooling tower based on the M-Cycle has been conducted here using the initial data from Gas Technology Institute. The cycle of concentration normally varies from 30 to 70 depending on the Process Design.
How To Develop Cooling Tower Life Cycle Cost Analysis. Ad Find China Manufacturers Of Cooling Towers. As the figure illustrates warm effluent from the plant heat exchangers enters the tower and is sprayed over the cooling tower fill.
Ad Find China Manufacturers Of Cooling Towers. It is advisable to keep the Cycle of concentration as high as possible to reduce the makeup water requirement of the cooling tower. Cooling towers cool water by evaporating a small percentage of the recirculating water flow.
Increasing cycles from three to six reduces cooling tower make-up water by 20 and cooling tower blowdown by 50. Work with your cooling tower water treatment specialist to maximize the cycles of concentration.
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