[TRNSYS-users] [hypocaust type460] air density and capacity

[Technical Support]

Didier,
  There is an equation in Type460 for the air density as a function of the air pressure:
 
RhoAir=PrAir*MmolAir/Rgas/(Tair+273.15)
 
I do not see an equation in there for pressure dependency of the air specific heat.
Kind regards,
 David





Technical Support TeamThermal Energy System Specialists, LLC2916 Marketplace Dr, Suite 104Madison, WI 53719techsupport at tess-inc.com

----- Original Message -----

Subject: [TRNSYS-users] [hypocaust type460] air density and capacity

From: "Didier De Kerpel" >;didierdekerpel at gmail.com>

Date: Sun, May 18, 2008 14:11




Dear TRNSYS users, 
 
Does somebody know if the air density (rho) and the air capacity c_p are hardwired into the programming of the type460?
In other words do their values change in function of temperature (like they do in reality).

I have the impression that they are hard programmed.
 
Thanks,
Didier


--
Didier De Kerpelstudent University Ghentmember BEST GhentDidier.DeKerpel at UGent.behttp://www.best.eu.org/
+32 474 27 89 79 

_______________________________________________TRNSYS-users mailing listTRNSYS-users at engr.wisc.edu
https://www.cae.wisc.edu/mailman/listinfo/trnsys-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trnsys-users-onebuilding.org/attachments/20080527/e3e971d4/attachment-0001.htm>