Hello Fara! If You only want to integrate some results You can sum them up with excel. If Your Time Step is different from 1 h You may have to divide the resulting sum with the number of Time Steps per hour. With Regards, Matthias Kersken --- Dipl.-Ing. Matthias Kersken Wissenschaftlicher Mitarbeiter / Abteilung Energiesysteme Fraunhofer-Institut für Bauphysik Institutsteil Holzkirchen Fraunhoferstraße 10 83626 Valley eMail: Matthias.Kersken@ibp.fraunhofer.de Telefon 08024 / 643-204 Telefax 08024 / 643-366 www.ibp.fraunhofer.de Dipl.-Ing. Matthias Kersken Research Associate / Department Energy Systems Fraunhofer Institute for Building Physics Branch Holzkirchen Fraunhoferstraße 10 D-83626 Valley eMail: Matthias.Kersken@ibp.fraunhofer.de Phone +49 8024 / 643-204 Fax +49 8024 / 643-366 www.ibp.fraunhofer.de --- -----Ursprüngliche Nachricht----- Von: Farah Gammoh [mailto:fgammoh@stud.fh-offenburg.de] Gesendet: Mittwoch, 23. September 2009 14:09 An: trnsys-users@cae.wisc.edu Betreff: [TRNSYS-users] Integrator negative vlaue Hello, What happens when you feed in a negative value into an integrator? I would like to subtract something rather than add, but an itegrator doesnt seem to do that. Once i feed in a negative value, It doesnt integrate anymore, the value remains the same. Or if that doesnt work, I would like to reset the itegrator under certain conditions. Meaning, when the integrator recieves a value of 0, it is reset to zero too. I tried doing that by subtracting the value of the integrator from itself, but as mentioned above, it doesnt seem to work. Thanks, Farah
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