I'd really need to know the pressures, internal as well as external, as well as the correct pipe dimensions, before I could be of much help other than to say that thermalally induced stresses can kill you if you aren;t careful, so the best rule of thumb is to use the thinnest wall that you can...
It looks like the gasket material you linked us too is very similar to Grafoil. That's the material that I would use, but I would have to compare cost first. Grafiol is great stuff. It's one of those no brainer, go on and solve the next problem, kind of materials that this world needs more of.
Tim
If you want the real skinny on head loss then the best bet is to go to the top: "Handbook of Hydraulic resistance: by I. E. Idelchik, if it isn't in there it isn;t anywhere!
Tim
Terry,
Whoever said you should use air instead of GN2 in a purge gas seal with natural gas in it needs to get their head examined! Due to the tight clearances in laby seals, they rub the shaft. This could generate enough heat that, with an oxidizer present, fire is a possibility. Even if there...
I run into labyrinth seal leakages often in the design of liquid fuel rocket enginer turbopumps and other varieties of turbomachinery, and at our company we always refer to an oldie but a goodie called "The Leakage of Steam Through Labyrinth Seals" by Adolf Egli, ASME June 19-21, 1935, but my...
100,000 PRM for a hydraulic motor does seem rather fast. I've seen them as high as 20,000, so while I'm not saying that there is not a vendor out there that can help (I'd call Eaton Aerospace and Parker). How about mating a lower speed motor and a gearbox? I've had to do that just ot get 120 Hp...
The turbine is designed to run more or less continuously. It is not in a residential area to my knowledge. It is an organic Rankine cycle waste heat recovery engine that uses isopentane as its working fluid. The engine will be located at a brick manufacturing facility. My spec requires a maximum...
We have jokingly tossed the idea of active noise reduction about, but the cost would be prohibitive when compared to passive screening. I know of a lot of vendors of materials that will do the job, but what I am looking for is some form of authority to back up my recommendations.
Thanks for the...
Without having read all of the above posts I can't say if this suggestion has been made, but the easiest way to do this is to over cut the threads on the bar and the nut and then bent the bar afterwards to the final radius of curvature along its normal axis. You could play around with the pitch...
I have been tacked by my employer to do some research into a noise abatement plan for a turbine power plant that we are designing (3.5Mwe). I’m not beginning my research until Friday the 9th of July, so before I begin I’d like to see if any of you, my esteemed colleagues, can help the process...
I'd start out with Roark too. How about rotordynamics? Have you address them as well? It's a pretty long and spindley shaft, so deflections during rotation could kill you if you pass through a critical speed. I use a program we have in house called Excel Rotor. It's results come pretty close to...
Anybody know of a web site that I can either download or complete ISA-S20 spec forms for process measurement and control instruments, primary elements and control valves? My boss is being too cheap to fork over the $250 or so to buy the disk, so I need to find them online.
Thanks,
Tim...
There is no such thing as a leak proof seal. All seals have a leak rate, so you need to find a rate that is acceptable or rethink your approach. I read in one of the posts a little about magnetic couplings. I use them often in hermetically sealed pumps that I design. If you really need to be...
