Chilled Water Pump Pressure

Chillers can be found in residential applications commercial buildings and industrial process applications.

Chilled water pump pressure.

The units are generally large end suction or horizontal split casing pumps running at 1450 rpm. Chilled water pumps are used in ac application multistoried buildings air conditioning is based on chilled water principle. 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. This guide covers the design and selection of a chilled water pump.

The chilled water pump is used to circulate chilled water in a closed system. Chilled water pumps circulate the water through the pipes and heat exchanger. Centrifugal pumps require a net positive suction head npsh to ensure a minimal pressure on the inlet of the pump. 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.

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. 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. The pumps are coupled with motors and supplied. Install pressure gauges on chilled water pump suction and discharge lines in such way to be easily readable and completely isolated from vibration.

Install piping accessories hangers and supports anchors valves meters and gages and.