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28 sty 2024 · The flow rate of a water pump is the volume of coolant it can pump per unit time, typically measured in liters per minute (LPM) or gallons per minute (GPM). This parameter is crucial in determining the pump’s ability to effectively circulate the coolant and dissipate heat from the engine.
RPM is needed to deliver your required GPM output. MOTOR/ENGINE SELECTION The size of the electric motor or gas engine required to drive your pump is determined by the pump GPM and PSI output desired. Refer to the Technical Data Sheet supplied with each pump, or the following chart. Both charts are based on electric horsepower requirements;
Some pump curves show PSI vs GPM or PSI vs lbs./hr. These curves are not general, but specific, and require definition in terms of water temperature and density.
The 700 and 1700 series pumps are non-volute and designed for lower capacities. Their shorter, steeper curves provide better efficiencies on low flows and superior accuracy when used with control devices. The 1050, 1150, 3400 and 3500 series pumps are volute high capacity pumps.
20 lut 2022 · Here is an explanation for all the pump curves you'll find on a pump chart, from GPM, Total Head, Impeller Size, Horsepower, Efficiency ...
4 lis 2012 · Temperature rise in a water pump working at normal conditions with flow 6 m 3 /h (0.0017 m 3 /s), brake power 0.11 kW and pump efficiency of 28% (0.28) can be calculated as dt = (0.11 kW) (1 - 0.28) / ((4.2 kJ/kg o C) (0.0017 m 3 /s) (1000 kg/m 3 ))
Temperature rise can be calculated using the following formula: (°C) = × × ( − ) Here, T = temp rise through the pump, 0C. H = total developed head at the flow being considered, m η = efficiency in decimals.
