4 replies to this topic

[ss3]

Hi,

I'd like to know how to find density from the steam tables when determining the thermophysical properties of water (for a heat transfer calculation I'm doing). Any ideas?

Thanks.

[Art Montemayor]

SS3:

I believe that I can understand that you are saying you don't know how to read the steam tables. What I can't believe is that you are trying to do a heat transfer calculation with that handicap.

Oh, well, I've learned something new. Go to the following website and key in your values to find the density of water at almost any imaginable combination of temperature and pressure:

http://webbook.nist....hemistry/fluid/

I just hope that you can read the resulting thermophysical properties in tabular form. If you can't, I'm afraid we can't be of much help. The best thing would be to change your major to something else less demanding - like political science. I hope you get the information you need and can read it.

[mbeychok]

ss3:

Every set of steam tables that I have ever seen has a column headed as the "volume" or the "specific volume" which has units of m³/kg or ft³/lb which is quite simply the inverse of the density. That is, density = 1/(specific volume).

[ss3]

Dear Art Montemayor,

A little point of correction for you. I DO know how to read the steam tables for all the other properties, all that's blank on my paper is the gap I left for determining density. It's really very little to ask to explain this nicely without insulting anyone's intelligence. As for suggesting I switch courses, well, you have no right to do that at all.

ss3

P/S. Thank u Mbeychok.

[Profe]

Hi ss3 ?

I think is useful share the knowledge and information.

For your question maybe the excel file attached will be useful for you.

you can get it at: Excel Engineering. web site: www.x-eng.com


Good luck. Be positive, and study very hard!