Low-pressure steam pipes related to DN500
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I need help from experts. I have a saturated steam pipeline with a pressure of 0.5 Mpa, a diameter of DN500, and a straight section that is nearly 300 meters long. How should expansion joints be installed? For pipelines with a diameter of DN300 or less, I used the calculations provided in the Chemical Engineering Handbook; but now that the diameter is DN500, it’s beyond the range covered by those tables. How can I carry out the calculations manually?
The thermal deformation amount is calculated using the following formula: △L = Lα(t2 – t1), where △L represents the thermal expansion amount of the pipe, in mm； L – Calculate the length of the pipe segment, in meters ； The linear expansion coefficient of α-tubes is in mm/m•°C; for steel, the linear expansion coefficient is typically taken as α = 0.012 mm/m•℃ ； t2 – the thermal calculation temperature used in pipeline design calculations; it is usually taken as the highest temperature of the fluid inside the pipe℃ ； t1 – The cold-state calculation temperature used in pipeline design calculations, in °C.
We have done this before, setting one every 100 meters or so.
On the 3rd floor as well, we have carried out similar projects
Thank you, I’ve learned a little more.