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『Calculation method for natural gas flow rate』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)
How to calculate the natural gas flow rate?
This is very simple. The volume will be calculated and the bridge will disappear. The sensitivity of general flow rate control is between 20-25m/s. For example, for a DN100 pipeline, the simple calculation method for hourly flow rate with a pipeline pressure of 0.4 MPa is as follows: 3.14x0.05x0.05x20x3600x5x1.3 3.14x0.05x0.05x20x3600=20m/s, and the air flow rate flowing through the pipeline for one hour is 5, which is the absolute bundle pressure obtained by adding the gauge pressure (0.4 MPa) and one atmosphere pressure of 101 KPa (0.101 MPa). The unit is bar (kg/cm2), and 1.3 is the ratio of air density to natural gas density.
2. How to calculate the flow rate of natural gas? According to the relationship between gas flow rate and pressure, the following formula can be used for conversion: flow rate=pressure/resistance, where flow rate is measured in cubic meters per second (m ³/s), pressure is measured in pascals (Pa), and resistance is measured in pascals per second per cubic meter (Pa · s/m ³). Therefore, the above formula can be transformed into: flow rate=pressure/resistance flow rate=pressure/(resistance coefficient x fluid density x average velocity), where the resistance coefficient is a constant related to the pipeline and fluid, the fluid density is the density of the fluid, and the average velocity is the average velocity of the fluid. For incompressible fluids, the fluid density can be considered as a constant, so the above formula can be simplified as: flow rate=pressure/(drag coefficient x average velocity). For gases, the ideal gas state equation can be used to calculate their density: gas density=gas mass/gas volume Gas density=gas mass/(g_600x400.jpg)
3. How to calculate the natural gas consumption of commercial stoves
The calculation of natural gas consumption of commercial stoves needs to be combined with equipment parameters, usage scenarios, and specific methods. The following four methods are commonly used
1. Basic formula method The core formula is: gas consumption=flow rate x time.
. Flow rate: refers to the natural gas throughput per unit time of the stove (cubic meters/hour), usually taking 80% of the design flow rate as the peak flow rate (if the design flow rate is 5m ³/h, then the peak flow rate is 4m ³/h). Time: The actual total usage time of the stove (in hours), and the daily or monthly cumulative usage time needs to be calculated. Example: If the peak flow rate of a single eye high flame stove is 3m ³/h and it is used for 5 hours a day, the daily gas consumption is 3 × 5=15 cubic meters2. The equipment parameter method directly determines the hourly gas consumption range based on the stove model and firepower configuration: standard single eye high flame stove: about 3m ³/h; 28 inch single head large stove: 4m ³/h; 30 inch cookware: up to 7m ³/h; 40 inch large stove: 8