Steam Trap Passing Rate
Steam Trap Passing Rate
(OP)
Does anyone have typical steam loss rates, which would give me the approximate consumption of steam through a passing steam trap.
Ideally, I need this information for standard trap sizes (1/2", 3/4" & 1"), and for different types of traps (inverted bucket, TD, float etc).
I've contacted a couple of trap manufacturers in the UK, but they seem very reluctant to supply this sort of information.
Can anyone help??
Ideally, I need this information for standard trap sizes (1/2", 3/4" & 1"), and for different types of traps (inverted bucket, TD, float etc).
I've contacted a couple of trap manufacturers in the UK, but they seem very reluctant to supply this sort of information.
Can anyone help??





RE: Steam Trap Passing Rate
RE: Steam Trap Passing Rate
The differential pressure
The size and shape of the orifice
The presence of condensate
Much theoretical work has been done on this, it is the last item that effects (reduces) the steam loss, for example, in a large process trap that is flooded with condensate there will be no staam loss even if the trap is failed. Also, if the orifice is long there will be choking effect when live steam passes through.
All this said, I have used (conservatively) 10% of the published condensate flow rate for each trap at each differential pressure in programs I have written to estimate steam loss for steam trap surveys. It was a very large data base, but it was the best approximation that we could think of without getting into theoretical thermodynamics.
RE: Steam Trap Passing Rate
Cooky
RE: Steam Trap Passing Rate
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For orifice sizes use these for argument sake:
Use 1/16", 1/8" or 1/4" for FT, IB and TH type traps
Use 1/4" or 3/16" for TD type traps.
This should put you in close range to actual losses.
There is a loss chart on http://www.steamonline.com
Good luck Cooky