Dear David,Thank you for the suggestion. I'll use Type 534 - coiled, but can you suggest me which are usually used values for the "geometry factor for natural convection" and "geometry exponent for natural convection".Best RegardsMartinOn Fri, Mar 27, 2015 at 10:45 PM, David BRADLEY <d.bradley@tess-inc.com> wrote:Martin,
I would highly recommend that if at all possible you use Type534 from the TESS Storage Tank library in place of Type60. Type534 has an internal heat exchanger model that is far more robust than the one built in to Type60.
Kind regards,
David
On 3/27/2015 3:11 PM, Martin Berov wrote:
Dear TRNSYS users,
I'm trying to analyse the influence of the heat exchanger area on the solar fraction and collector efficiency.
I'm using storage tank Type 60c with internal HX. Although I change the area and the length(keeping the outside diameter constant) I always get same results for the monthly solar fraction and efficiency - like there is no influence.
What could be the reason for this?
Best regardsMartin
_______________________________________________ TRNSYS-users mailing list TRNSYS-users@lists.onebuilding.org http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com
_______________________________________________
TRNSYS-users mailing list
TRNSYS-users@lists.onebuilding.org
http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org