Search results for query: *

Perhaps explained here... http://www.iperf.org/pressure.html

@vesselfab, Yes, this would be possible, but unless it was absolutely required, I would prefer NOT to do this.

@ trottiey, Let me be more specific. I have a nozzle which penetrates both the jacket and the shell radially and perpendicularly. The nozzle extends beyond the outside of the jacket and the inside of the shell (both cylindrical) so in other words, the nozzle is not "abutting" either the shell...

Can someone please point me to welding requirements for jacketed vessels where a nozzle penetrates both the shell and the jacket. I am unable to locate it in the section VIII div 1 code book (disclaimer - I am not a full time PV engineer ;^) ). Thanks for your help.

@moltenmetal I will probably not be using these folks due to cost only (still looking for an alternate supplier), but NAO in Philadelphia looks like a potential player in the small shielded flame market and the owner is a really interesting guy whom is willing to talk tech with you any time you...

@ moltenmetal Thanks for your reply. I did manage to get in touch with a vendor who sells "small shielded flares" as you have suggested. Your response is spot on with the conversation I had with them. The immediate focus was on the turndown ratio. I hope the pricing comes in at a reasonable...

Thanks everyone for your replies. I have checked with John Zink. The rep started me at 50K and told me that the system is way too small for them to economically create, to look for somebody else (all very nicely). As far as this being done via dilution, this is a safety issue for the customer...

I am in the midst of designing a furnace which will use hydrogen as a process gas. I am attempting to locate a supplier of a system to burn off said hydrogen during the process. My problem is that I am required to burn off both a steady stream of hydrogen (1-10 SCFM) as well as a surge of...

I have a piece of water cooled equipment which requires a low pressure at the outlet connection (closed loop system). Please assume that this low pressure outlet connection aspect of the design is not able to be changed. I must then take the flow from this low pressure outlet connection (0-5...

@prex Thanks for your input. You have given me a great deal of insight into my problem. I have decided to approach this first as an intermediate stiffening ring so that it is adequately sized for external pressure performance. Next, I will attempt an App Y design at the operating internal...

@prex Thanks for the confirmation on App Y In response to "Not sure to understand what you mean with buckling being addressed in App.2", I would assume that external pressure on any cylindrical object would subject this object to potential buckling since there would be compressive hoop...

I am involved in the design of vacuum vessels which operate from full vacuum to as high as 150 psig. We currently have a PE design our vessels which fall outside the "B&PV Code not required range". We have a vessel with a hinged front door so that the door can swing open for access to the...

I can't promise you a mollier diagram directly, but you can get tabular enthalpy vs pressure data using the "NIST webbook" and then plot the exported data using your favorite open source plotting program ... http://webbook.nist.gov/chemistry/fluid/

More complicated than that. It's like this... This vessel I have described is in another larger vessel. Both are initially under vacuum. We need to repressurize both vessels so that the vessel I am asking about is not crushed in the process. It is a very thin wall vessel and cannot take a...

No, it projects beyond the crown of the vessel head. It is located in the center of the vessel head. If you are thinking Borda, notice how much bigger the slug diameter is than the hole diameter. Seems more like a flush inlet to me (if this is the way you are headed). Bob

Yes, it is. It is basically a round slug containing the 3/8" hole which is welded into the end of a vessel. The slug is between 2 and 3 inches in diameter and 1.5 to 2 inches thick.

I've been given the task of calculating the flow of a compressible fluid (nitrogen in this particular case) through a long bore orifice (it WILL potentially go sonic). I suppose the best way to think of it would be a hole drilled thru a fitting in the end of a rigid vessel. The hole is about...

@ione Not sure why you are mentioning shaft work since the expansion is a work-less process. If you look at the graph I attached to my earlier post, if the expansion from the smaller tube (where M=1 to start with) causes a decrease in T_static, then you would necessarily have to violate the...

@ ione: I don't recall saying that FANNO was isentropic, only that area changes (specifically reductions in area) involved ~isentropic changes in the flow state (see my 22Dec09 17:44 post). There is no "pickiness" involved in describing FANNO flows as adiabatic and not isentropic. I am aware...

Slight correction to my previous post. The reducer has some finite length of piping between the inlet reduction and the outlet expansion. Should make more sense in this context.