Cooling Tower Spray Pump Sequence

There s prolly arguments both ways on which is best.

Cooling tower spray pump sequence.

As caused by tower pan vortex pan drain down or faulty bypass. 08 16 2018 11 56 pm 22. The spray pump cycles off when the temperature pressure falls below the. From there the fans can sequence or modulate to keep temp.

B high pressure drop tower spray nozzles in. For closed loop towers and evaporative coolers it showed stage 1 as the spray pumps for all units and the fans as successive stages. Evapco home page evapco. Unstable pump operational points as caused by.

From what i have seen the spray pump fires up first. It s the smallest motor and most effective in cooling. The vfd will cycle on to provide increased cooling. An unfortunate operational sequence can occur during pump start up when the pump energy head is devoted towards simply raising water from the low level pan to the highest part of the system.

Air in pump suction. The vfd cycles off when the temperature pressure falls below the lower deadband. Pump cavitation and loss of pumping ability as caused by inadequate pump suction pressure. During this start up period flow rates can be so low as to cause bottom venting and prevent sometimes forever formation.