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

[Axel.Oliva at 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 at ise.fraunhofer.de
http://www.ise.fraunhofer.de
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