[TRNSYS-users] building type 56: performance based on time-step

[Axel.Oliva@ise.fraunhofer.de]

Dear TRNSYS users,

the building type 56 is used to generate
a load profile regarding to a constant room temperature. I experienced
a different behavior of cooling and heating demand based on the time-step
selected. It seems that the building type is extrapolating its performance
within one hour, when such a smaller time-step is selected - and correction
its state, based on one hour calculations. 

All input values like irradiation on
all surfaces contribute as a continuous function. Details are shown in
the attached .pdf file. The same issue appears in TRNSYS versions of 16
and 17.

The same issue has already been discussed
without detailed answering: https://mailman.cae.wisc.edu/pipermail/trnsys-users/2008/003893.html


Tanks for help
best regards,

Axel Oliva
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Dipl.-Ing. Axel Oliva
Division Solar Thermal and Optics
Fraunhofer Institute for Solar Energy Systems ISE
Heidenhofstrasse 2, 79110 Freiburg, Germany
Phone:+49(0)761/4588-5698 Fax:+49(0)761/4588-9950
axel.oliva@ise.fraunhofer.de
http://www.ise.fraunhofer.de
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