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Re: [TRNSYS-users] RE : Re: Equation use...



Dear Guillaume,

Please go to Manual 7-"TRNEdit: Editing the input file and creating distributable applications", section 7.6.9 "The EQUATIONS Statement". It explains the available mathematical functions.

Sometimes it is easier to post-process the results in a spread sheet than to try to find the right combination of IF functions that will give you the result that you want.

Best regards,

Diego

guillaume renaud wrote:
Thanks Jeff,
Actually I didn't find any TRNSYS equation command's guide or manuel... I can tell you what's my problem, you'll certainly understand how novice I am... ; I'm using the TMY2 Dry Bulb temperature in a first equation calculator, in order to get new mensually outdoor temperature (with a simple equation needed for my project, integrated in the calculator) = No problem for it. But the matter is that I can't get a good Output file for printed results on type 65d, and on type 25a. And so I can't use the solution afterward.. and I think it's because of the number of Input >10... Then, I'm trying to transform those 12 Outputs I get (average for each month from my first calculator), in another new calculator to get new hourly temperatures for the whole year.. Then I need to give conditions in time, as ; [take JanTemperature from hour 0 to hour 744], [take FevTemperature from hour 745 to hour 1416], etc... Well.. I hope being clear enough.. and anyway I guess having the good guide should be nice enough for me.. guillaume.

*/Jeff Thornton <thornton@tess-inc.com>/* a écrit :

    "I`m looking for any good tool giving complete information about the
    calculator, for the use of [NEW EQUATION] within simulation
    studio...(I
    trying to put conditions in my equations, and I didn't find
    enagh explanation in the manuel...)"

    Why don't you give us an example of the conditions you'd like to
    use and
    we'll show you how to do it using TRNSYS equations. This might provide
    helpful to other users as well. There is a nice description of the
    TRNSYS
    equation commands in the manual (not the manual for the studio).

    Jeff

    Jeff Thornton
    President - TESS, LLC

    2916 Marketplace Drive - Suite 104
    Madison WI 53719 USA

    Phone: 608-274-2577
    Fax: 608-278-1475
    E-mail: thornton@tess-inc.com
    Web: www.tess-inc.com


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--
Diego A. Arias
TRNSYS Coordinator
Solar Energy Laboratory
University of Wisconsin - Madison
1500 Engineering Drive
Madison, WI 53706