Design of circulating water pipelines
Thread Content
Can the circulating water pipeline be connected to the main pipe at the bottom? L. Which standard specifies this?
The common practice these days is to take connections from above the main pipe for both supply water and return water, but general piping standards recommend taking connections from the bottom of the main pipe for supply water, and from above for return water. The reason is to ensure that the branch pipes are filled with liquid as much as possible when water is supplied, so that no air is drawn in from the upper part; this prevents a decrease in the flow rate and heat value of the circulating water. But *the usual practice is to connect it above; after all, there is still a bit of a difference between reality and what’s written in books, haha.