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where: [2] Q f = total residual flow during the test (gallons per minute); c = discharge coefficient (unitless). This is usually 1.0 if using a diffuser. If using a wand to measure the stagnation pressure, the coefficient value depends on the shape of the flow hydrant orifice.
For liquids, various units are used depending upon the application and industry, but might include gallons (U.S. or imperial) per minute, liters per second, liters per m 2 per hour, bushels per minute or, when describing river flows, cumecs (cubic meters per second) or acre-feet per day.
The relationship between gallons per minute (gpm) and fixture unit is not constant, but varies with the number of fixture units. For example, 1000 FU is equivalent to 220 US gallons per minute (0.014 m 3 /s) while 2000 FU represents only 330 US gallons per minute (0.021 m 3 /s), about 1.5 times the flow rate.
For example, if one rotation of the hand is 10 gallons, the sweep hand is on 7, and the wheel display shows 123456 plus a fixed zero, the actual total usage would be 1,234,567 gallons. In the United States most utilities bill only to the nearest 100 or 1,000 gallons (10 to 100 ft 3 , 1 to 10 m 3 ), and often only read the leftmost 4 or 5 ...
Light passenger vehicles pump up to about 50 litres (13 US gallons) per minute [8] (the United States limits this to 10 US gallons [38 litres] per minute [9]); pumps serving trucks and other large vehicles have a higher flow rate, up to 130 litres (34 US gallons) per minute in the UK [8] and 40 US gallons (150 litres) in the US. This flow rate ...
The standard liter per minute (SLM or SLPM) is a unit of (molar or) mass flow rate of a gas at standard conditions for temperature and pressure (STP), which is most commonly practiced in the United States, whereas European practice revolves around the normal litre per minute (NLPM). [1]
Winchester or corn gallon was 272 in 3 (157 imp fl oz; 4,460 mL) (1697 act 8 & 9 Will. 3. c. 22) Henry VII (Winchester) corn gallon from 1497 onwards was 154.80 imp fl oz (4,398 mL) Elizabeth I corn gallon from 1601 onwards was 155.70 imp fl oz (4,424 mL) William III corn gallon from 1697 onwards was 156.90 imp fl oz (4,458 mL)
The gallon per watt-hour or (G/Wh) is a formula used to test the efficiency of a pool pump or sump pump. California Title 20