Chilled Water Pump Pressure

The units are generally large end suction or horizontal split casing pumps running at 1450 rpm.

Chilled water pump pressure.

In addition to minimal inlet pressure the designer needs to calculate the pressure loss from resistance of the system via pipe friction loss and most importantly the pressure drop of the inlet strainer figure 2. This guide covers the design and selection of a chilled water pump. Control of the chilled water from pressure to velocity to volume is up to the control system controlling the pumps and valve actuators in the system. Condensate pumps often deliver water from an atmospheric receiver to a deaerator operating at 5 psig meaning that in addition to the other heads the pump must overcome a pressure head of 5 psig.

Install pressure gauges on chilled water pump suction and discharge lines in such way to be easily readable and completely isolated from vibration. Chilled water pumps are used in ac application multistoried buildings air conditioning is based on chilled water principle. Chillers range in size from smaller than 5 tons all the way up to several hundred tons. The pumps are coupled with motors and supplied.

Centrifugal pumps require a net positive suction head npsh to ensure a minimal pressure on the inlet of the pump. The chilled water pump is used to circulate chilled water in a closed system. The chilled water pump is a part of an overall chilled water system that often includes a chiller piping valves fittings expansion tank air handling units and fan coil units. Support pumps and piping separately so that weight of piping system does not rest on pumps or its support.

Chilled water pumps circulate the water through the pipes and heat exchanger.