Calculation formula for pipeline water flow rate | How to calculate the hourly water flow rate for a 273mm diameter pipeline with a pressure of 0.1MPa

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DateTime 07/02/2026 Show 64

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What is the maximum water flow rate for a DN150 pipeline with a pressure of 6 kilograms? A DN150 pipeline with a pressure of 6 kilograms has a maximum water flow rate of 950 cubic meters per hour. The calculation formula for pipeline flow rate:

1. Flow rate (instantaneous flow rate)=pipeline cross-sectional area x flow velocity.

2、 Flow rate (hourly flow rate)=3600 x pipe cross-sectional area x flow velocity. Among them, the cross-sectional area of the pipeline is π xRxR. In the formula: flow unit: cubic meter/hour; Flow rate unit: meters per second; Radius unit: meter; 3600 is the number of seconds converted from one hour. The water flow meter consists of two parts: a sensor and a converter. It works based on Faradays law of electromagnetic induction and is used to measure the volumetric flow rate of conductive liquids with a conductivity greater than 5 μ s/cm. It is an inductive instrument for measuring the volumetric flow rate of conductive media. However, there are still certain defects in the intelligent water pipeline flow monitoring devices currently available in the market during the pipeline flow monitoring process. For example, the information monitored by the monitoring device cannot be transmitted in real time to the monitoring terminal, which makes it difficult for monitoring personnel to grasp the pipeline flow situation in real time, resulting in the inability to handle pipeline blockages in a timely manner. In addition, during the operation of the device, the components generate a large amount of heat, resulting in poor heat dissipation and easy damage to the components due to high temperatures.

2. How to calculate the hourly water flow rate for a pipeline with a diameter of 273mm
Calculation formula for pipeline water flow rate
and a pressure of 0.1MPa?

Sichuan Gaode Te will provide you with a detailed analysis: Firstly, using the information of the diameter of 273mm, you can refer to the friction coefficient S. Then, the known pressure difference is 0.1MPa and the hydraulic slope J=H/L.

. Based on these data, the flow calculation formula can be used: Q=√ (J/S)=√ (0.1/41.85) for calculation. Specific operation process: Firstly, determine the friction coefficient S of the pipeline. For a pipeline with a diameter of 273mm, it can usually be obtained by querying the friction coefficient table, assuming it is 41.85. Next, it is known that the pressure difference is 0.1 MPa and the hydraulic slope is J=H/L. Here, assuming hydraulic slope J=0.1/1000=0.0001. Then, substitute these data into the formula Q=√ (J/S)=√ (0.0001/41.85) for calculation. After calculation, the flow rate Q is approximately 0.0023m ³/h. It is worth noting that this calculation assumes that the flow inside the pipeline is laminar and the friction coefficient S is accurate. In practical situations, adjustments may need to be made based on specific conditions. In addition, during the calculation process, the pressure unit needs to be standardized. Here, 0.1MPa is converted to Pascal. It should be noted that the hydraulic slope resistance J assumed in the above calculation process is 0.0001, which may need to be adjusted according to actual conditions. If the length or height of the pipeline changes, the hydraulic slope J will also change accordingly, thereby affecting the final flow calculation result. In summary, for a 273mm diameter pipeline with a pressure of 0.1MPa, the water flow rate per hour is approximately 0.0023m ³. The calculation process involves parameters s

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