Why must the branch pipe for condensate be connected to the main pipe from top to bottom?
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I think it should be connected from bottom to top, is it because of the pressure difference? It can be used both above and below
The condensate water collected in the condensate pipe is not pure liquid condensate. For (relatively) high-pressure steam, the condensate it releases can turn into superheated water at low pressure, thereby generating steam. Therefore, for the main pipeline, steam flows in the upper layer while water flows in the lower layer. If the condensate from the branch enters at the upper part of the main pipe, the newly incoming condensate can naturally separate into condensate and steam, which then merge with the two phases in the main pipeline. Conversely, if condensate enters from the bottom of the main pipe, it may hinder the flow of the fluid in the main pipe.