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How to calculate the flow rate of the water pump? The volume of liquid discharged by a pump per unit time is called the "pump flow rate" and is represented by Q. The calculation formulas are as follows:
1. The formula for calculating the flow rate of the water pump is: Q=P η/2.73H, the unit of flow rate is m3/h, P is the shaft power, unit Kw, η is the efficiency of the pump, unit%, 2.73 is a constant, and H is the head m.
2. The shaft power of the water pump (kw) P=water delivery volume (liters/second) x head (meters)/102 x efficiency=flow rate x head x density x acceleration due to gravity. 102 is the unit sorting constant.
3、 The efficiency of a pump=effective power of the pump ÷ shaft power of the pump. The energy obtained by a unit weight of liquid through a pump is called head. The head of a pump, including suction, is approximately the pressure difference between the pump outlet and inlet. Additional information:
1. l/s=3.6m³ /h，1m³ /h=1/3600m³ /S1 cubic meter=1000000 cubic centimeters, 1 hour=3600 seconds 1 cubic centimeter/second=10-6 cubic meters/(1/3600 hour)=3.6 × 10-3 cubic meters/hour=0.0036 cubic meters/hour. Therefore, according to the above conversion formula, if the product parameter is 100 cubic centimeters per second, the conversion result is: 100 × 0.0036=0.36 cubic meters/hour.
2、 The mass (weight) flow rate is expressed in Qm, with the unit of t/h (tons per hour). The relationship between mass flow rate and volume flow rate, such as Kg/s (kilograms per second), is expressed as Qm=Q × p, where p represents the density of the liquid (Kg/m³); ， t/m³ ）Room temperature clean water p=1000kg/m³. Reference source: Baidu Baike: Pump flow rate_600x400.jpg)
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2. Pump flow calculation formula
The pump flow calculation formula is: Q=[(m × q)/t] × K, that is, the maximum hourly flow rate (m3/h)={[(number of water users × water standard)]/(water usage time × 1000)} × hourly variation coefficient. A water pump is a mechanical device that transports or pressurizes liquids. Transfer the mechanical energy or other external energy of the prime mover to the liquid to increase the energy of the liquid, which is mainly used to transport liquid, including water, oil, acid-base liquid, emulsion, suspended lotion and liquid metal. It can also transport liquids, gas mixtures, and liquids containing suspended solids.
3. Formula for calculating the flow rate of a pump
The formula for calculating the flow rate of a pump is usually Q=V × n. Among them, Q represents the flow rate, which represents the volume of fluid flowing through a certain section of the pipeline per unit time, usually in cubic meters per hour, liters per second, gallons per minute, etc. V represents the displacement or volumetric efficiency of the pump, which is the volume of fluid that the pump can discharge per revolution, and the unit may be cubic meters per revolution, liters per revolution, etc. N is the rotational speed of the pump, which is the number of revolutions per minute of the pump shaft, usually expressed in revolutions per minute. The application of this formula is very extensive, as pumps are an indispensable component in many industrial and commercial processes. By calculating the flow rate of the pump, engineers and operators can ensure that the system operates at maximum efficiency while avoiding excessive wear or performance degradation. For example, in water treatment plants,
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