High Temperature Application
High Temperature Application
(OP)
Guys,
I am designing a Section VIII-1 heat exchanger with design conditions 1058°F at 80 psig. I am using SS321H. While I do have all the stress values for SS321H at this temperature from Section II-D, Section II-D does not provide yield stresses for any materials over 1000F, which is causing Compress to crash. Does anyone have any suggestions for handling this?
I am designing a Section VIII-1 heat exchanger with design conditions 1058°F at 80 psig. I am using SS321H. While I do have all the stress values for SS321H at this temperature from Section II-D, Section II-D does not provide yield stresses for any materials over 1000F, which is causing Compress to crash. Does anyone have any suggestions for handling this?
RE: High Temperature Application
RE: High Temperature Application
Since Chart HA-2 has a temp line for 1500 F, I don't see why you could not apply the procedure.
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: High Temperature Application
I ended up extrapolating the yield strength from the table to 1100F and using that value (17600 psi). When doing UG-28 (c) step 3, as suggested by Sntman, using the 1200F curve, I got a B value of 10,000, doubling it would give a yield strength of 20,000 psi. I ended up using the lower extrapolated number as I do not feel comfortable using a yield strength at 1058F from the curve that is higher than the yield strength from Table Y-1 at 1000F.
At least now I have some ammo in my holster if my AI or customer questions by thinking.
Thanks for your help.