Cooling Tower Pump Head Calculation

A break in the piping system occurs where the water exits the spray nozzles and is exposed to. It must also provide the energy head necessary to raise water from a low to a higher static head level. In the ideal case the cold water temperature will be equal to the wet bulb temperature.

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Cooling tower pump head calculation.

Keep in mind that you need the pump to develop enough pressure to get water to the highest and farthest places in the plant. 1 1 cooling tower a cooling tower is a specialized heat exchanger in which air and water are brought into direct contact with each other in order to reduce the water s temperature. Cooling tower efficiency calculation. In this article explained about basic concepts of cooling tower types of cooling towers formula for cooling tower efficiency.

Pump total differential head 134 8 m. Starting with the suction piping it is important to take precaution to avoid air pockets which can destroy a pump in pretty short order. Sizing the tower water pump can be a challenge too. Pump flow rate 30 m3 hr.

Correctly piping the suction and discharge of your cooling tower condenser water pump is critical. Pump head is the total resistance that a pump must overcome. The most common open system is the cooling tower portion of a chilled water system as depicted below. Also brief about cooling tower mass balance of make up water requirement in system drift losses or windage evaporation losses blowdown or draw off.

Cooling tower efficiency is limited by the ambient wet bulb temperature. Pump power 15 7 kw. Pumps are typically sized for 65 feet of head. Some fairly catastrophic events can occur if either is improperly installed.

Piping condenser cooling tower losses and valves. For the tower piping circuit the pump must overcome the piping flow friction loss. The calculation of cooling tower efficiency involves the range and approach of the cooling tower. If you don t size the pressure drop right it won t get there.

The water is at20c has a density of998 kg m3 a vapour pressure of0 023 bara and a viscosity of1cp. This is practically not possible to achieve. Net positive suction head available 22 13 m. The calculation is presented below.

We ll assume that the pump efficiency is70. As this occurs a small volume of water is evaporated reducing the temperature of the water being circulated through the tower. The pump head calculation depends on the type of system that the pump serves.

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