What is COC in cooling tower formula?
What is COC meaning? COC or the Cycles Of Concentration is an abbreviation, used when talking about cooling water or cooling tower water. 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.
How do you calculate the tonnage of a cooling tower?
To calculate the cooling tower capacity in tons, multiply the water flow rate by the temperature differential, then divide by 12,000, then multiply by 500.
How is cooling tower capacity determined?
Multiply 500 times the water flow rate, times the temperature difference, divided by 12,000 or 500 x q x dt/12,000. The result is the tons of capacity of the cooling tower.
What are the parameters of cooling tower?
Several parameters as Cooling range, Wet bulb temperature, Mass flow rate of water, Tower height, Air velocity through tower and many other things that affect the performance of cooling tower. For a good designer all this parameter would want to mind for proper designing and functioning of cooling tower.
How do you calculate chiller tonnage?
Divide Q (BTUs per hour) by 12,000 (the number of BTUs in one ton of cooling capacity). This yields the chiller capacity required to handle the process heat load in tons per hour: Example: 240,000/12,000= 20 tons/hr.
How is LG ratio calculated?
Considering data from a heat and mass balance the dry air rate and the prevailing L/G ratio in the tower can be calculated: L/G = ha / [Cw x (tw2 – tw1)] = Cw = specific heat of water = 1.0.
How do you calculate KW and TR?
In English terminology, 1 TR is 3024 KCal. Learn How the value of 3024 KCal or 3.517 KW derived…..!! One short ton = 2000 lb, Heat extracted = 2000 x 144/24 hr = 288000 Btu/24 hr = 12000 Btu/hr = 200 Btu/min, 1 ton refrigeration = 200 Btu/min = 3.517 kJ/s = 3.517 kW = 4.713 HP .
What is the formula for tonnage?
tonnage, in shipping, the total number of tons registered or carried or the total carrying capacity. Gross tonnage is calculated from the formula GT = K1V, where V is the volume of a ship’s enclosed spaces in cubic metres and K1 is a constant calculated by K1 = 0.2 + 0.02 log10 V.
What is G L ratio?
This is commonly called the liquid-to-gas ratio (L/G ratio) and uses the units of gallons per 1,000 actual cubic feet or litres per cubic metre (L/m3). Expressing the amount of liquid used as a ratio enables systems of different sizes to be readily compared.
How to calculate cooling tower efficiency?
The calculation of cooling tower efficiency involves the Range and approach of the cooling Tower. Cooling tower efficiency is limited by the ambient wet bulb temperature. In the ideal case, the cold water temperature will be equal to the wet-bulb temperature. This is practically not possible to achieve.
What is cooling tower range?
The difference between the Hot Water Temperature (Cooling Tower Inlet) Temperature and Cold water (Cooling Tower Outlet) temperature is called Cooling Tower Range. The calculation of cooling tower efficiency involves the Range and approach of the cooling Tower. Cooling tower efficiency is limited by the ambient wet bulb temperature.
What design data is required to select cooling towers?
The following design data is required to select cooling towers: The Design Heat Load is determined by the Flow Rate, and the Range of cooling, and is calculated using the following formula: Heat Load (BTU/Hr) = GPM X 500 X ° Range of cooling.
What are the limitations of a cooling tower in summer?
In summer the ambient air wet bulb temperature raises when compared to winter thus limiting the cooling tower efficiency. This includes determination of cycle of concentration, Evaporation loss, Drift or Windage Loss, Blow down water requirement makeup water requirement. The cycle of concentration is a dimensionless number.