Cooling Tower Tank Size

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.

Cooling tower tank size.

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. Drift loss varies between 0 1 and 0 2 of circulation flow. 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. Plants commonly operate over the design capacity which means the cooling tower needs to keep up.

Flow rate in gpm. It can be as low as 0 01 of circulation flow if the cooling tower has windage drift eliminators. It is both the theoretical limit to the exiting cooled water temperature and the only specific air parameter necessary in cooling tower selection. Drift loss 0 02 water supply for new development in eliminator design blowdown.

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. Drift is entrained water in the tower discharge vapors. Water make up requirements of cooling towers. Towers that hold a lot of water.

This will give you the tons of cooling required at 50 fleaving water temperature. Drift loss in cooling tower is a function of drift eliminator design. All tanks have baffled compartments if required. Drift is entrained water in the tower discharge vapor.

Cooling tower sizing program. Calculate the total lbs hour of material your machine uses and divide it by the lbs ton listed below for your specific process. Evaporative cooling towers like the advantage power tower series provide cooling by evaporating a small amount of the recirculated process water flow. 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.

Watch for these special circumstances that may require special tank sizing. To size your production machine cooling load use the following information. Basic cooling tower equipment. Tanks are structurally supported around top and sides as required.

Blowdown is a portion of circulating water that is discharged in order to lower solids concentration due to evaporative cooling. Heat load btu hr gpm x 500 x. Cooling tower pump recirculation pump process pump stand by pump. Cooling tons x 6 minimum tank volume.

It is important to have some excess flow in the pump and tower design for these situations. Towers that are located a long way from the tank. Approximately 1 000 btu s are required to evaporate 12 gallons of water. Tank cover manufactured from stainless steel and supplied in sections for ease of removal and access covers are optional.