Cooling Tower Pump Suction Piping

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Cooling tower pump suction piping.

Piping engineers must look at numerous factors when designing the pump s suction piping and discharge piping. Any stress on the pump casing by the piping system greatly reduces pump life and performance. The following guidelines are a sample of some industry standards and good piping layout practices. Some fairly catastrophic events can occur if either is improperly installed.

It must also provide the energy head necessary to raise water from a low to a higher static head level. Typical open tower piping for the tower piping circuit the pump must overcome the piping flow friction loss. Pitch suction pipe up to cooling tower when possible and provide a means to vent excessive air. Correctly piping the suction and discharge of your cooling tower condenser water pump is critical.

Problems on the suction side however can be the source. Starting with the suction piping it is important to take precaution to avoid air pockets which can destroy a pump in pretty short order. Multi cell cooling tower configurations that have 100 percent independent systems have limited redundancy. Piping condenser cooling tower losses and.

Tower manufacturers the hydraulic institute hi and bell and gossett all suggest lower velocity for pipe selection in cooling tower pump suction piping. Piping condenser cooling tower losses and valves. Open piping circuit for the tower piping circuit the pump must overcome the piping flow friction loss. Properly engineered condenser chiller and cooling tower piping and controls will improve heat transfer and avoid problems such as air slugging and pumps losing prime.

Bell and gossett has several pipe sizing suggestions in their manual teh 1209. Most discussions concerning tower and or open piping. Suction piping is usually one or two line sizes larger than the pump nozzle. Pumps should never support the suction or discharge piping.

Pump suction water will reach this level without pump energy. Click here to request a copy of the xylem bell and gossett cooling tower piping technical bulletin teh 1209. Next week we look continue to look at cooling tower pump suction velocity. Rotate or exercise condenser water pumps if there is a long horizontal run between pumps or a dead leg in the suction line.

Deppmann and it s affiliates can not be held liable for issues caused by use of the information on this page. Always try to elevate the tower high enough to have a positive pressure at the pump suction when the pump runs at full flow.