high pressure steam pipe ratings

brad rutherford_2

Where would I find the ratings for bare steel pipe at 100 psi steam?

Brad White_9

What do you mean by ratings?

ASME has temperature/pressure charts or do you mean capacity tables? Or when you say bare steel pipe do you mean condensation loss? (If that pressure pipe is bare, you had better insulate it or break out the burgers.

brad rutherford_2

Dan,
I mean the btu output of bare steel pipe at 100psi steam.
Thanks

Brad White_9

Brad here...

What pipe size and at what ambient temperature? It varies. And I have to assume you mean gauge pressure and saturated, not superheated steam.

For example, a 6 inch line at 100 PSIG in a 75 degree ambient will have a surface temperature of 337.4 degrees F. It will emit 1321 BTU's per hour per linear foot.

Same pipe in a 90 degree ambient will have a surface temperature of 337.5 degrees F. It will emit 1254 BTU's per hour per linear foot.