Pipeline anti-freezing
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For drainage in winter, at a height of 4.5 meters above the ground, I plan to use a DN25 pipe for drainage. Considering the issue of preventing freezing of the pipe, apart from providing heat tracing and insulation, are there any other simpler solutions? We used to have to drain water every hour, and the pipes would freeze; later we installed electric heating, which improved things a lot. Now we need to add more pipes for drainage, so we have to consider ways to prevent the pipes from freezing. I’m wondering if there’s a way to avoid the need for heating; in pipes where water flows and heat exchange is poor, would such pipes not freeze? ?
The main focus is on improving insulation and heat tracing; can the water in the pipes be drained promptly once it comes out?
The problem is that the water can be drained, but its source is the moisture present in acetylene gas, which condenses; as long as gas is produced, this moisture will be there. It also reminds me that water will always be present in the pipes. We are only removing the water from the thin tube.
It is recommended to use a combination of insulation and electric heating. Additionally, in terms of pipeline design, it is advisable to give the pipes a certain slope, or consider providing a drain at the lowest point
There is no perfect solution; steam or electric heating is the most direct and effective approach.
May I ask, does a greater degree of bending in the pipe make it more prone to freezing, or is it actually the case that a straight pipe is less likely to freeze?
The water discharge volume and frequency from your unit are very low; installing an 8-inch steam tracing pipe along with proper insulation will be sufficient
In the northwestern region, even running water freezes. With less water, it’s easier to freeze. Adding heat tracing is the safest option; if testing is possible, one can try using insulation of only 50 units first.