So, to maintain design COC some quantity of water is discharged from the cooling tower. This will lead to corrosion & scaling problem in the system if COC is not maintained as per design limit. It means as COC increases dissolved solids gets concentrate. 2.2.2 Cooling Tower Calculations Eight types of wet evaporative cooling. Blow down:ДЄs you know when water evaporates it leaves solids & only pure water evaporates. In turn the two major subsections ( cooling towers, cooling ponds and once. On other side higher COC increases dissolved solids concentration in cooling tower. It is always advisable to maintain COC as high as possible to reduce make water requirement. The cycles of concentration normally vary from 3.0 to 8.0 depending on the design of a cooling tower. The last formula gives you more accurate COC if you have flow measurement facility available for makeup & Blowdown water in the cooling tower. Equations Describing the Physical Processes draft cross- and counterflow towers that attempted to solve In an evaporative cooling tower, the water acts as. Cooling towers may either use the evaporation of water to remove process heat and cool the working fluid to near the wet-bulb air temperature or, in the case of. Add credibility by making sure that our client obtains the maximum available credits.COC = Silica in cooling water / Silica in makeup waterД¬OC = Calcium Hardness in cooling water / Calcium Hardness in makeup waterД¬OC = Conductivity in cooling water / Conductivity in makeup water.Д¬OC = Make up water quantity / Blowdown water quantity Sewer diversion may also be available for metered irrigation. A mathematical model for thermal calculation of the ejection cooling tower has been proposed. The savings that are shown are for the maximum credit. Sewer Diversion - Some but not all sewer districts will give credit for evaporation.Adjust load so that calculated volumes agree with actual volumes. If bleed is also metered, divide actual makeup by actual bleed to obtain obtain cycles of concentration.If the makeup water is metered and recorded or there is some other way to determine the actual tower makeup (such as water bills), adjust the so that the calculated makeup is the same as the actual makeup.If this is not a comfort cooling application, obtain the recirculation rate from the pump nameplate and divide by three.In this case, adjust the tons of cooling to reflect the actual recirculation rate for the chiller. They will also have nameplates on the pump frame that show the the pump rating. Newer reciprocating chillers may have a recirculation rate that is less. For example, the cooling tower for UNIT 6/TPS-2 be specified to cool 33000 m3/hr from 38.1вЊ to 32.1вЊ at 25.5вЊ wet bulb temperature. The standard rule of thumb is that the recirculataion rate is three times the tonnage of the tower. Cooling Tower: - Cooling towers are usually specified to cool a certain flow rate from one temperature to another temperature at a certain wet bulb temperature.This calculator is set up using standard cooling tower calculations and rules-of-thumb.The reductions in bleed and makeup will be calculated, together with the potential cost savings. On the Cost Savings Summary tab you can find a 'Print' button to print out a hard copy of the form. Review the summary of cost savings under the Cost Savings Summary tab.Enter the target Cycles of Concentration in the box under the Proposed Program tab.Enter the Cost of Water and Sewer Charges per thousand gallons.ДЄt this point the the volumes and costs of evaporation, bleed and makeup will be displayed in the yellow boxes.Cooling tower power with simple ASHRAE slab conductance calculation (kW). Enter the current Cycles of Concentration a cooling tower and augmentation by indirect evaporative cooling of ventilation.Cooling towers are an important unit operation in chemical process. Enter the Average Load on the tower over the days in which it is in operation. Applying mass and energy balance calculations yields critical operating insight. Get this from a library TEFERI, numerical model for calculating the performance of an evaporative cooling tower.The recirculation rate will automatically fill in. Enter Tons of Cooling in the Current Program box.The only cells that can be changed are the ones with a gray background. The material of packing has great influence on its thermal performance as it provides a very large surface area for evaporative heat and.

Evaporative cooling tower calculations