How to calculate motor efficiency for variable-speed centrifugal pumps: knowing the efficiencies of the pump, VSD, and motor will enable the engineer to calculate the kW input for a pump, from minimum to maximum flow and head conditions for that pump. Here, the author goes through that ...
Head is the height to which a centrifugal pump can raise water straight up. Water creates pressure or resistance, at predictable rates, so we can calculate pump head as the differential pressure that a pump has to overcome in order to raise the water. Common units are feet of head and pou...
System Capacity Planning:Engineers must calculate the required flow rate to meet system demands, such as HVAC systems or water supply networks. Selection of Pump and Components:Accurate flow rate calculation is crucial for selecting the right pump and sizing the piping and other components. Energy E...
Of course, you can alter the pipe diameter flow rate, and trying to calculate pipe size from flow rate always makes sense when attempting to construct the most efficient pump system for your end use. In fact, there are several rough rules of thumb that you ought to consider when determining...
To calculate the equivalent resistance divide the battery’s full charge voltage by the current draw you measured above the result is the number of ohms of resistance you need to simulate your motors. Make sure the resistor you use can handle the load otherwise it will overheat and burn up....
loop design of a compressed air system will allow the airflow to take place in two directions. This will lower the pipe length to almost half and will reduce the occurrence of pressure drop. Many experts also recommend the installation of a balance line to provide an additional source of ...