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『Calculation formula for flow rate of circulating pump』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. How to calculate the flow rate of a circulating pump?
1. The label in the above figure shows the standard parameters of the electric motor. Without knowing the specifications and models of the matching water pump, even if the power, current, speed, efficiency, and other conditions of the cleaning and opening motor are known, the flow rate of the circulating pump cannot be calculated.
2、 If it is the flow rate of the running water pump, the corresponding actual flow rate can be found from the working point of the water pump characteristic curve, that is, the outlet pressure indicated by the pressure gauge, based on the water pump characteristic curve chart or hall (as shown in the figure below).
2. How is the flow rate of the boiler circulating pump calculated?
The formula for calculating the circulating water volume of a hot water boiler is: circulating water volume=0.86 * heat absorption/temperature difference. Boiler load 1 ton=700kw=600000 Kcal/h, 1MW=4.1868 * circulating water volume/temperature difference. The designed circulation capacity of the Guosuo cleaning furnace is 12 cubic meters per hour. The designed circulation capacity of each steam ton boiler is 24 cubic meters per hour (equivalent to 1 steam ton for every 0.7MW). The design heating area per ton of steam boiler is 6000-10000 square meters, and in cold weather areas, the heating area is relatively small. Furthermore, the designed inlet and outlet water temperature should be 95/70, 3.6 * heating capacity (kw)/4.19 * heated water temperature difference=heated water flow rate (t/h), which is the boiler circulating water flow rate. It depends on the specific situation. In actual operation, the circulating water vo
3. How to calculate the flow rate of the circulating pump for central heating?
1、 The heating area is generally 25 to 30 tons of water per 10000 square meters.
2、 The selection of circulation pump flow rate is to multiply the heating area by 25 tons, and then slightly enlarge the data to ensure the quality of heating.
3、 Plate heat exchangers typically have a capacity of 500 square meters per plate.
4、 Specific process: Based on the thermal indicators corresponding to the building properties, the total load Q of heating wood jujube is obtained from the heating area. Secondly, the supply and return water temperatures on the primary and secondary sides need to be provided, T2`-T2。 This is the only way to select the board replacement model.
5、 The flow calculation of the circulating pump can be based on the temperature difference between the supply and return water on the secondary side, G=Q/1.163(T2`-T2)。 The calculation of lift is generally 20 to 28 meters. Precautions for using the extended data circulation pump
1. Before installation, check whether there are foreign objects blocking the inlet and outlet of the circulation pump;
2、 Before installing the system, the debris in the system pipeline should be washed clean and tidy to prevent the debris from entangling the impeller and causing blockage during the operation of the circulation p