Helium has a thermal conductivity 5times that of air (air is .0257 W/(mK) where helium is .1513 W/(mK)). If I have a container filled with 90% air and 10% helium, will the thermal conductivity be dependent on the ratio too?
Reference my heat previous thread, below...
Suppose I have a pressure vessel with internal volume of 10scf. Now assume the vessel is open to atmosphere of air at stp. I close the vessel, and then inject 90scf of helium gas. The chamber now has a 100scf mix of 90% helium, 10%air. The internal pressure is 10atm.
After a period of...
What is the weld callout for an edge stitch weld? I want a weld bead 1/2 inch wide, 2 inches long, spaced 5 inches apart on center. See the picture in the below link:
http://2rm.weebly.com/uploads/3/0/6/0/3060587/2550140.png?570
Thanks!
Mark B.
2RM Engineering & Design
