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How to calculate the steam flow rate in pipelines?
1. In conventional design, the steam flow design value of DN50 steam pipeline is 0.5 tons/hour, equivalent to 500 kilograms of hail per hour
2. In practical applications, the maximum allowable flow rate of DN50 steam pipeline can reach 1000 kilograms/hour
3. For conservative estimation, it is recommended to design according to the steam flow rate of 500 kilograms/hour.
. Follow up: Can the stove core provide a formula for calculating steam flow rate? Thank you. 1. When the bulk density of saturated steam is 0.5MPa, it is 2.185 kg/cubic meter. 2. The calculation formula includes: π x (pipe inner diameter/2) ^ 2 x (working pressure sail difference)/4 x flow rate x 3600 seconds. 3. Using this formula, the result is 110-220 cubic meters/hour. 4. Multiplying the cubic meter/hour by the bulk density of saturated steam yields 240-480 kg/hour.2. How to calculate the design flow rate of the grille
① Determine the water depth in front of the grille according to the optimal hydraulic cross-section formula (1-1), so the width of the grille groove is about 0.283m. The water depth in front of the grille is h ≈ 0.142m. Explanation: Due to the small water volume, the calculated data is relatively small. In order to meet the needs of design, facilitate construction, and ensure accurate equipment selection, the width of the grid groove is 0.60m and the water depth in front of the grid is 0.30m. ② Grid calculation (1-2) n-grid clearance number is substituted into the data to obtain:=36 (bars) effective width of the grid groove (B). The design uses ø 10 round steel as the grid bar, with S=0.01m,=0.494m, and grid width B=0.8m. General regulations fo
1. Grid gap (1) The gap between the grille bars in front of the water pump should be determined according to the requirements of the water pump. (2) The gap between the front grid bars of the wastewater treatment system should meet the following requirements: a maximum gap of 40mm, with manual removal of 25-40mm and mechanical removal of 16-25mm. The wastewater treatment plant can also set up coarse and fine grids, with a gap of 50-100mm between the coarse grid bars. (3) Large wastewater treatment plants can set up coarse, medium, and fine grids. (4) If the gap between the front grille of the pump is not greater than 25mm, a grille can no longer be installed in front of the wastewater treatment system.
2、 The amount of slag in the grid (1) is related to various factors. In the absence of local operating data, the following information can be used. Grid gap of 16-25mm; 0.10~0.05m3/103m3 (grid slag/wastewater). Grid gap of 30-50mm; 0.03~0.01m3/103m3 (grid slag/wastewater). (2) The moisture content of slag is generally 80%, and the bulk density is about 960kg/m3. (3) In large wastewater treatment plants or pump stations, mechanical slag removal should generally be used for large grids (with a daily slag volume greater than 0.2m3).
3、 Other parameters (1) The flow velocity through the grid is generally 0.6~1.0m/s. (2) The water flow velocity in the channel in front of the grille is generally 0.4~0.9m/s. (3) The inclination angle of the grille is generally between 45 ° and 75 °. Small angles are more labor-saving, but they require a larger footprint. (4) The power unit of the mechanical grille is generally recommended to be installed in the Hexun room or other protective measures should be
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