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How to calculate the flow rate of the heating system?
The flow rate of the heating flowmeter is considered normal when it is between 35 and 0.5m/s. Because if the flow rate is too slow, it will require a lot of time for the water to circulate once, and there will also be a situation of half hot and half cold. Of course, if the flow rate is too fast, it will not only increase the workload of the heating equipment, but also be very energy-saving. Regardless of the type of heat source used for the sliding stove, the temperature, flow rate, and pressure difference of the low-temperature hot water ground radiation heating medium should be matched with the heat source system; The heat source system should be equipped with corresponding control devices for the flashing device. Additional information: Calculation formula: G=0.86 * Q/Δ t, where
1. G: flow unit L/h, Q: heat load unit W, Δ t: supply and return water temperature difference unit ℃, 0.86: can be regarded as a constant.
2、 Calculation of heat load: Q=heating area (㎡) * unit area heat index (W/㎡) Example:
1. 430kw=0.43MW, converted into heat: 368571 kcal, rounded to 370000 kcal.
2、 The circulating water volume is 370000 kcal/10 degrees=37000 kg/hour (flow rate).
4、 The economic flow rate of heating pipes is about 2.5 meters per second.
5、 Calculation of pipeline diameter: a. Flow rate=pipeline cross-sectional area X water velocity X3600 seconds=area X2. 5 meters/second X3600 seconds X1 tons/cubic meter=37 tons/hour. Reference source: Baidu Baike - Heating Measurement
2. What is the normal flow rate of heating?
The normal flow rate of heating should be determined based on factors such as system type and ar
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1. Reference for central heating system flow rate: 1) The flow rate per square meter of heating area in a household is 2 to 4 kilograms per hour, and the flow rate per hour for an ordinary household is about 1 to 3 cubic meters based on 100 square meters.
. 2) Public buildings need to be adjusted according to the building scale and insulation performance, and there is no unified standard for building construction.2. Key indicators of pipeline water flow rate: 1) The normal flow rate is 0.35 to 0.5 meters per second, which can balance heat exchange efficiency and energy consumption, and prevent noise or equipment wear.
. 2) A flow rate below 0.3 meters per second can easily cause the heating system to not heat up; Exceeding 0.6 meters per second will increase energy consumption and the risk of system instability.3. Factors affecting flow rate: 1) In terms of system type, the flow rate of underfloor heating and conventional radiators is slightly different due to unknown pipeline design.
. 2) In terms of housing conditions, the area, floor height, and insulation layer thickness will directly affect the flow demand. 3) During the maintenance of the wilderness trail, pipeline blockage and incomplete valve opening resulted in a decrease in actual flow rate.4. Suggestions for abnormal handling: 1) If the heater is not hot, check whether the exhaust valve and filter are blocked.
. 2) Do not adjust the main valve by yourself, contact the heating service provider to check the flow rate.