Hi everyone, we are sizing a gas heat exchanger for this mixture and would like some help generating some properties on it:
N2=12.27%
CO2=43.39%
O2=1.42%
H2O=2.97%
H2S=4PPM
Need density, specific heat, viscosity, thermal conductivity, and molecular weight.
Appreciate any help/direction anyone...
The SA-36 comes in with slight mill scale, but after laser machining, it is then run through a (small grit) shot blast. The SA-249 gets an oil treatment (different than SA-214 tubes) in processing, but is supposedly washed off and cleaned (now suspecting something here...)
I've just...
Thank you for your reply and comments.
One thing I forgot to add...
We always heat treat (anneal) the coils of stainless when they come in because their rockwell is too great for our processing...
We ramp up to 1910F, hold 45 minutes, then N quench rapidly down to 100F as soon as possible...
We braze 10,000 lbs of coolers in one braze cycle. Some of them have steel some of them have stainless tubes. The SA-214 to SA-36 is a P1 to P1 braze and the SA-249 to SA-36 is a P2 to P1 braze but they both have the same brazing procedure specification, and both were qualified.
Just letting...
No bond of the brazing compound seen. We can see the compound all over both materials, but not at the junction where the capillary flow is supposed to occur. We're bridging a .005-.007" gap.
We have SA-214 tubes that did fine in the same braze. I realize the SA-249 to SA-36 is a P2 to P1...
Our company brazes SA-249 stainless tubes to SA-36 structural tubing (actually A500 GrB that is qualified to SA-36 via Heat treat). We're having trouble with our latest batch of SA-249 brazing properly. The SA-36 is laser cut and the holes are dead on accurate. Tube geometry is quite good as...
