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Volumetric flow rate is defined by the limit [3] = ˙ = =, that is, the flow of volume of fluid V through a surface per unit time t.. Since this is only the time derivative of volume, a scalar quantity, the volumetric flow rate is also a scalar quantity.
GPD [citation needed] ≡ 1 gal/d ... GPM [citation needed] ... ≡ change in the thermodynamic temperature T that results in a change of thermal energy kT by 1.380 ...
This depth is converted to a flow rate according to a theoretical formula of the form = where is the flow rate, is a constant, is the water level, and is an exponent which varies with the device used; or it is converted according to empirically derived level/flow data points (a "flow curve"). The flow rate can then be integrated over time into ...
G/Wh makes it easy for homeowners and plumbing professionals to quickly determine the energy efficiency of a pump. Simply stated G/Wh links efficiency and performance by illustrating how many gallons of water are pumped using one watt hour of electricity.
GPM may refer to: GPM (software), software providing support for mouse devices in Linux virtual consoles; Graphical path method, a mathematically based algorithm used in project management; Gallons per minute, a unit of volumetric flow rate; Gallons per mile, a unit of fuel efficiency; Gaurela-Pendra-Marwahi district, Chhattisgarh, India
In fire protection engineering, the K-factor formula is used to calculate the volumetric flow rate from a nozzle. Spray nozzles can for example be fire sprinklers or water mist nozzles, hose reel nozzles, water monitors and deluge fire system nozzles.
PO gpm = pump output in gpm (gallons per minute) 1 gallon = 0.0238095238 barrels; ID 2 = inside diameter of the wellbore or casing, squared; OD 2 = outside diameter of the drill pipe or tubing, squared; 1029.4 = A conversion factor constant used to calculate the volume between the outside of a tube within the inside of another tube, using barrels.
Examples include a showerhead with flow rate of 1.75 gpm (6.61 lpm) at high water pressure and 1.45 gpm (5.48 lpm) at low pressure, or a showerhead with three pressure compensated flow rates (by non-removable pressure compensator) with options of 0.5, 1.0 and 1.5 gpm (1.9, 3.8, 5.7 lpm).