3 Important Tips for Boiler Feed Pump Selection and Sizing

Sizing boiler feed pumps is meant to inform the selection of a pumping system that will operate optimally under specific conditions. To pick the pump itself, assess cost, dependability, and power consumption. Several steps are involved in such sizing and selection, and some of the most important include:

Figure Out the Number of Pumps

The load circumstances will determine the number of pumps required. In case of a "base-loaded" steam plant that has an almost negligible load swing, several boilers may be served by a single pump. Typically, that's a very cost-effective approach in situations where loads are comparatively constant. The cost of single large pump is certainly lower than that of multiple smaller units. But when the loads are widely dynamic, several pumps will be required. To ensure the information that you have read about  water booster pump system  is very important, follow the link.

Modulating/ On-Off Feedwater Regulation

Another critical evaluation concerns whether or not there will be feedwater control modulation. Or are your boiler feed pumps going to use on-off control?

Modulating feedwater control is ideal for in case of steam boilers. Using it helps avoid one of the major contributors to pump complications and as well as inefficiency of deaerator. The problem with on-off pump control to regulate water boiler level is that the boiler is exposed to gushes of feedwater that can be up to three times the maximum boiler capacity. The boiler is thus unable to maintain consistent circulation and firing rate.

However, on-off pump regulation is generally appropriate when you need to lower the first cost of the apparatus. It also suffices when turbine style pumps are in use. Get attached to us now and learn some lesson about the  boiler feed system .

Discharge Head Calculation

The discharge head for every boiler feed pump should be worked out. It's important that boiler feed pump is able to surmount the operating pressure of the boiler. It also ought to overcome any other sort of pressure, including losses within the pipelines to the boiler. The overall pump discharge pressure must surmount system pressure which the stream distribution system needs. Likewise, the boiler pressure must be sufficiently high to overcome non-return valve drop to be able to sustain the system pressure conditions. If the economizer's water side loses some pressure, the total pump discharge pressure must compensate for the drop too.

A lot more is needed when it comes to the sizing and selection of boiler feed pumps. You can start by figuring out the number of pumps required. Consider feedwater control on use as well as total discharge pressure of the boiler feed pump. Learn more about boiler feedwater   https://en.wikipedia.org/wiki/Boiler_feedwater .