Thanks to all authors for creating a page that has been read 366,298 times. WHP = HQ / 3960 per minute, the theoretical horsepower or hydraulic horsepower (WHp) is calculated as such: This hydraulic horsepower calculation will yield a result based on theoretical, or perfect conditions where no energy is lost due to friction, leakage, etc. This example will use water, so the specific gravity is 1. ", "The explanation is very easy. While pumps are highly variable in their complexity, their basic function and effectiveness is measured in terms of power. Calculate the Hydraulic (fluid power) horsepower. The following formula can be used to calculate water horsepower (WHP). What we have is 3000 cfm with the blower speed of 875 rpm. μ = pump efficiency (decimal value). A value of 0.9 is often used for this calculation. This is already explained with a sample on the above article: bhp = GPM x H x Sp.Gr. Win $100 towards teaching supplies! The vertical distance traveled by the liquid through the system. q = flow (gal/min) h = head (ft) SG = 1 for water Specific Gravity. P = power depend on: kW, H = head, m, Q = flow, m3/hr, SG = specific gravity, η= pump efficiency, decimal. This article received 14 testimonials and 89% of readers who voted found it helpful, earning it our reader-approved status. 33,000 lb-ft/minute: One (1) horsepower is defined as displaying 1 lb a distance of 33,000 ft in one minute. The rate of flow through the system in gallons per minute. How much horse power would a pump be required to have in order to transfer the water to a distance of 200 meters? Sump Pump Sizing Chart. How many cubic metres of water are thrown by a 2.5 inch discharge with a 5 hp pump? Horsepower (HP) = (Torque × Speed)/5252. divided by the product of 3960 and pump efficiency. Select horsepower unit type, enter the power in horsepower … What follows is a basic breakdown of that horsepower calculation for centrifugal pumps, as well as an interactive tool that allows you to see the interplay between different variables and horsepower. If you know your head height, discharge pipe distance or gallons per hour you can use our calculator to pick to right horsepower motor. Pump input power calculation formula or pump shaft power calculation formula. Horsepower Defined. Look for future blogs, where we’ll take this calculation a step further and see how we can calculate the efficiency of a pump based on the relationship between input and output horsepower. Include your email address to get a message when this question is answered. A 0.5 hp pump is sufficient.You need 2000 LTR water in a day, for which this self priming pump with 0.5hp capacity is sufficient. MOTOR FORMULAS AND CALCULATIONS: The formulas and calculations which appear below should be used for estimating purposes only. Appendix F: Horsepower and kilowatt calculations Appendix F Horsepower and kilowatt calculations Pump-motor horsepower calculations Horsepower calculation—US units Calculate motor horsepower for shipboard auxiliary equipment such as pumps. P = power depend on: kW, H = head, m, Q = flow, m3/hr, SG = specific gravity, η= pump efficiency, decimal. P in Watt =. A pump efficiency of 60% can be used as a conservative estimate for a basic calculation to provide a general approximation. All tip submissions are carefully reviewed before being published. H.P=Horsepower. It is the responsibility of the customer to specify the required motor Hp, Torque and accelerating time for his application. Install them only under experienced supervision. Because we know that one horsepower is equal to 33,000 ft./lb. With our combined expertise, capabilities, and inventories - we have the largest offering in the industry of remanufactured, aftermarket, and OEM hydraulic components and parts. In this context, 1 horsepower is equal to 746 watts. Brake horsepower (determine the pump efficiency from the pump performance curve prior to doing this ... Table 6 Power to the pump shaft calculation results. Frustrated with stomach issues, but don't know what's wrong? ", "Good information to select a suitable motor for domestic use. Formula: GPM x PSI x .0007 = horsepower needed This video describe how to calculate motor hp if gpm is given This calculator can be used to determine the centrifugal pump brake horsepower (BHP) for a given flow rate (Q), head (H), specific gravity (S.G.), and efficiency (Eff). TR = ton of refrigeration. We want to see your websites and blogs. Position - Vertical - Horizontal 2. $$ {8.3333 \over 33,000} = { 1 \over 3960} $$. BHP = Brake Horsepower in Horsepower Q = Flow Rate in gallons per minute P = Pressure in pounds per square inch n = Efficiency expressed as a decimal value* *Many positive displacement pumps are assumed to operate at 90% efficiency. Enter these values into the water horsepower formula. Hydraulic Pump Horsepower Calculator. wikiHow's. The ideal hydraulic power to drive a pump depends on. Government agencies such as the USGS can often provide this information. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. P whp = water horsepower (hp). measure specific gravity with a hydrometer, http://aglifesciences.tamu.edu/baen/wp-content/uploads/sites/24/2017/01/B-6011-Calculating-Horsepower-Requirements-and-Sizing-Irrigation-Supply-Pipelines.pdf, https://energy.gov/sites/prod/files/2016/08/f33/Dedicated%20Purpose%20Pool%20Pumps%20TP%20NOPR.pdf, http://inspectapedia.com/water/Well_Pump_Capacity.php, calcular los caballos de fuerza de una bomba de agua, Calcolare la Potenza della Pompa dell'Acqua, Please consider supporting our work with a contribution to wikiHow, Water horsepower = minimum power required to run water pump, TDH = Total Dynamic Head = Vertical distance liquid travels (in feet) + friction loss from pipe, Q = flow rate of liquid in gallons per minute, SG = specific gravity of liquid (this equals 1 if you are pumping water). This mechanical power is given by the following formula: With: P = Power transmitted to the fluid by the pump … Win $100 towards teaching supplies! If you enter any four of these variables as inputs, the calculator will determine the fifth variable.
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