Working principle of fan and water pump of energy storage equipment

What is a pump & fan used for?

In process and HVAC applications, pumps and fans are widely used to move fluids, liquid (water, oil, others), or air or gas, by using mechanical energy to overcome the resistance of the flow circuit. The prime mover at the shaft is generally an electrical drive, but also other types of drive can be used.

What is the working principle of a fan?

The working principle of a fan involves the application of voltage to the stator winding, which generates a pulsating type flux. There are two fluxes: one rotating in a clockwise direction and the other in a counter-clockwise direction. The motor rotates in the resultant direction. Your fan, being ten years old, operates based on this principle.

How does a centrifugal pump work?

1. Throttle volume flow by using a valve 2. Turn water pumps on or off in sequence 3. Vary the pump speed How does a Centrifugal pump work ? ASHRAE, 2016. ASHRAE Systems and Equipment Handbook 2016, SI edition, Chp. 44 - Centrifugal Pumps, American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Atlanta, GA.

How to compare the energy consumption of a centrifugal pump?

Compare the energy consumption of a centrifugal pump if flow is reduced to 50 % of the rated value with (1) a dissipative method and (2) a non-dissipative method. An example is given below of technical and economic comparison between a dissipative system (throttling valve) and a non-dissipative one (electrical variable-speed drive).

What mechanical devices are used to control a fan?

Common mechanical devices for the control of fans are inlet louvres, inlet vanes, outlet dampers, and different kinds of dampers such as butterfly and guillotine and variable pitch for axial fans. With these controls, an excessive power consumption occurs, together with high levels of sound and vibration and fan-volume shortfalls.

What are the problems with a fan & pump?

One of the major problems in operating fans and pumps is the control of the volume flow rate to meet user needs which may require fluid flow inferior to the rated one, sometimes for long operating periods.