Re: loss coefficients

We don't do homework answers here, but I'm forwarding your query to the mailing list anyway.

Your prof is testing you, you are doing an academic exercise. The loss from joint roughness is not worth considering unless you are inlolved with critical applications. Water is trivial, even if used for nucular (sic) applications. Look up liquid oxygen or hydrogen piping if you want some interesting info.

Some areas where weld joint smoothness is important are cryogenics (possible collection of hydrocarbons resulting in explosions) and the food industry (contamination issues). I am the resident cryogenics piping "authority", there is someone else on this list that can help you with the food processing industry if you need more help. There are 150+ members here.

Thanks for contacting us, the university community is a major market for PipingDesign.com. I am assuming that you are female, I fully support the concept of more women getting involved with engineering. They offer a different perspective and are much more pleasing to look at, even if they're wearing that same stupid pocket protector.

Paul
Montreal
Webmaster
Piping Design Central

• Original Message ----- From: Claire Braden <bradenclaire@hotmail.com> To: <webmaster@pipingdesign.com> Sent: Sunday, March 11, 2001 5:13 PM Subject: loss coefficients

> Hello,
> I am a mechanical engineering student. For our design class, my
group and I must design a cooling sytem for a nuclear reactor, which includes a water storage tank connected to a pipe that is 6 inches in diameter and 30 feet long. We will need several lengths of pipe to make up 30 feet. We need to know how much head loss is introduced by the joints that fasten the lengths of pipe together. I searched your website and found the list of loss coefficients (k values) for different fittings and valves, but I didn't find any for pipe joints. Perhaps this loss is negligible, but if is significant I need to include it in my head loss calculations.Can you tell me where to get this information? Your help would be much appreciated.
>
> Thank you
> Claire Braden
> McMaster University
Received on Sun Mar 11 18:07:00 2001