What's the effect of this Piping?

Long Beach Ed

The piping you show, when used with one-pipe steam systems permits the returning condensate to rain down into the steam main. This cools steam passing through the main, causing some of it to condense.

The old Guides show about a 5% reduction in steam passing by such a take-off. Yet they show such an arrangement as "acceptable," though not as good as the 45 degree arrangement which places condensate at the bottom of the main without intruding on the steam flow.

Long Beach Ed

jeff_57

I've been reading

Dan's Lost Art book and came across the section about the details of one pipe steam systems. He says that the best way to pipe take offs from the steam main is using 45 degree fittings. I've noticed that in our one pipe system all the take offs are at 90 degree. What are the effects of having the return condensate drop directly on the steam as is moves through the system? (I've included some
pics.)

Nelson_2

What to do?

Repiping all these takesoffs would be a major undertaking?
Would the benefits outweigh the work and expense?

DanHolohan

I don't think

you'd see the payback, Nelson. It's not that big a building. Thanks for reading me.

And thanks, Long Beach Ed, for digging out that number that I had not heard before. Learning every day!