Liquid Nitrogen Piping 2 - Eng-Tips
2010年11月16日 · The chamber has refrigeration equipment, but it can't keep up with the rapid ramp times needed for a certain test, hence the liquid N2 boost. iainuts - Thanks; I hadn't even thought of the fact that the pressure buildup from flashing will just push the liquid back into the storage vessel when the valve is opened.
Liquid nitrogen piping - Material engineering general discussion
2003年12月16日 · If the liquid nitrogen (LIN) is used for it's refrigeration value, then yes, generally the line is insulated. If it isn't then there's little need except as you say for personnel protection. If the LIN is used for refrigeration and the pipe is to be uninsulated, I'd suggest doing a thermal analysis using a coefficient of heat transfer of ...
High Pressure Nitrogen - Laser engineering - Eng-Tips
2017年2月14日 · 4. you need to take liquid from the dewar, not gas. Run the liquid into an evaporator. Don't size the evaporator for your worst case cut scenario, size it for your worst case failure scenario. If an N2 leak develops you can draw a lot more than what a specific nozzle size and specific pressure will draw.
Flow Of Nitrogen Through A Utility Hose? - Eng-Tips
2003年7月14日 · Does anyone have a rule of thumb or an estimate of the flowrate of 70 psig N2 through about 100' of 3/4" utility hose? The hose/hoses will be connected to an empty reaction train sitting at 3-5 psig. I want to purge the reaction train to the flare to remove residual hydrocarbon, and I...
Spring vs Nitrogen To Pressurize Shock - Eng-Tips
2012年12月18日 · [tab][tab]| | <- Hose to damper body) [tab][tab]| | [/tt] If the piston is bottomed out on the step, the fluid pressure must be < the gas pressure. So, the damper must be built with the right amount of fluid to keep the piston off the stop, before the gas pressure is charged, if you want the fluid pressure to stay = gas pressure at full extension.
Shrink fit of bronze-graphite bushings by liquid nitrogen
2010年5月30日 · RE: Shrink fit of bronze-graphite bushings by liquid nitrogen caoimhin1 (Mechanical) 30 May 10 11:42 Haven't any direct experience of a customer using this method, but catalogues I have for Deva bm material ( www.deva.de ) give super-cooling as an acceptable method for this type of bearing.
calculating N2 flow through a flexible hose - Eng-Tips
2008年5月15日 · I am trying to determine the flowrate of nitrogen (90 psig) through a flexible rubber utility hose. I found some online calculators, but want to do some hand calculations to validate. I guess I am looking for friction factor for 3/4" id rubber hose and any other tips. The hose lengths would be 25 feet and 50 feet lengths. Thanks
Nitrogen drain lines - Pipelines, Piping and Fluid Mechanics ...
2006年5月17日 · The nitrogen is not in liquid phase it is gas. For more information please advise the nitrogen has these conditions in producing nitrogen unit battry limit: Operating pressure Pmin=6.7 Pnormal=7.7 Pmax=9 Pdesign=11 all barg …
What kind of piping for Nitrogen gas? - Eng-Tips
2005年8月5日 · I have a bunch of Nitrogen bottles that are piped to a manifold. I have to pipe from the manifold to about 4 control panels 50 ft away. The control panels will be used to regulate the Nitrogen for fire extinguisher filling. Pressure from nitrogen bottle manifold about 1,200 psig. Pressure to fill extinguishers about 250 psig. Thank you.
ULTRA DRY (DEW POINT MINUS 90 DEG C) NITROGEN STORAGE …
2001年11月20日 · Now this ultra dry nitrogen is passed onto a storage bank of cylinders (40 litre capacity cylinders). Now if we measure the dew point of same nitrogen from bottles it is only -70 deg C atm dew point. This means the Nitrogen is getting "WET" during its passage from the dryer to storage cylinders.