[Bldg-sim] Hourly Solar Hot Water modeling program

[B. Fountain]

Karen,

Transys is ideal for that type of analysis.  Another (cheaper) option to
consider would be WATSUN from Natural Resources Canada.  It comes with
.TMY for Canadian sites -- I do not know about compatibility with US .TMY
data.  Price is right though.

WATSUN is available (for free) here:

http://canmetenergy-canmetenergie.nrcan-rncan.gc.ca/eng/software_tools/watsun.html

I have not played much with it but it does produce hourly results to a
text file. Note that it only uses SI units.

Cheers,
Brian

> <Is anyone aware of a program that can model hourly outputs for a solar
> hot water system?  I would prefer something that can accept a TMY2 or TMY3
> weather file and just gives me the hourly heat output based on SHW panel,
> inlet and outlet temperatures, angle and azumith.  I'll handle the load
> side, including thermal storage, etc.>
>
> In my opinion, TRNSYS is probably the best program to handle your stated
> solar domestic hot water simulation needs - at timesteps of an hour all
> the way down below a second if you need that type of resolution.  But it
> can also do the entire balance of system (thermal storage, controls,
> interaction with the building, etc.). However, it's a bit on the pricey
> side if you're only going to be using it for one project.
>
> Give us a call if you'd like to discuss your project.  We do a lot of
> solar thermal projects and could help answer some of your modeling
> questions.  Good luck with your project.
>
> Jeff
>
>
> Jeff Thornton
> President - TESS, LLC
>
> 22 North Carroll Street - Suite 370
> Madison WI 53703 USA
>
> Phone: 608-274-2577
> Fax: 608-278-1475
> E-mail: thornton at tess-inc.com
> Web: www.tess-inc.com
>
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