Cooling tower pump recirculation pump process pump stand by pump.
Cooling tower tank size.
When operating below 50 f you must decrease the rated chiller cooling capacity by 2 for every one.
Drift is entrained water in the tower discharge vapors.
Plants commonly operate over the design capacity which means the cooling tower needs to keep up.
This will give you the tons of cooling required at 50 fleaving water temperature.
It can be as low as 0 01 of circulation flow if the cooling tower has windage drift eliminators.
Drift loss varies between 0 1 and 0 2 of circulation flow.
Cooling tower sizing program.
A cooling tower is a heat rejection device that rejects waste heat to the atmosphere through the cooling of a water stream to a lower temperature.
It is both the theoretical limit to the exiting cooled water temperature and the only specific air parameter necessary in cooling tower selection.
Tanks are structurally supported around top and sides as required.
Drift loss 0 02 water supply for new development in eliminator design blowdown.
Blowdown is a portion of circulating water that is discharged in order to lower solids concentration due to evaporative cooling.
The following design data is required to select cooling towers.
Water make up requirements of cooling towers.
The wet bulb temperature wbt of the air entering the cooling tower is an independent variable that is a fundamental factor in dictating the appropriate size of a cooling tower.
Approximately 1 000 btu s are required to evaporate 12 gallons of water.
Calculate the total lbs hour of material your machine uses and divide it by the lbs ton listed below for your specific process.
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 closed circuit dry cooling towers rely solely on air to cool the working fluid to near.
Range of cooling in f t1 t2 area wet bulb temperature in f twb the design heat load is determined by the flow rate and the range of cooling and is calculated using the following formula.
Towers that are located a long way from the tank.
Drift is entrained water in the tower discharge vapor.
Or for high flow systems greater than 3 gpm ton select a tank size so that the water will reside in the tank for at least 1 minute.
Determining a cooling tower type and understanding some of the key design considerations will get you headed in the right.
Cooling tons x 6 minimum tank volume.
All tanks have baffled compartments if required.
Basic cooling tower equipment.
To size your production machine cooling load use the following information.
Watch for these special circumstances that may require special tank sizing.
Heat load btu hr gpm x 500 x.
Flow rate in gpm.
Evaporative cooling towers like the advantage power tower series provide cooling by evaporating a small amount of the recirculated process water flow.
It is important to have some excess flow in the pump and tower design for these situations.
