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Re: [TRNSYS-users] python/trnsys

Maurice,

  I'd recommend doing some tests to confirm to yourself that capacitance is indeed having an impact. Start the building (or zone) with a high temperature and just let it cool down in a constant temperature, no solar environment. Now change the capacitance by an order of magnitude then do the test again. The zone should cool down either more slowly or more quickly depending on whether you multiplied or divided the capacitance by 10. I usually use a value of the volume*1.2*1.007*f where f is a multiplier that ranges between about 5 and 10.

kind regards,

 David

 


On 10/26/2022 02:30, Maurice Charbit - OZE-ENERGIES via TRNSYS-users wrote:
Hi all

I am using B18

When I change the volume that provides  different results. By default capacitance is 1.2*volume. But when I change, manually, the capacitance value that gives no change. It seems that the capacitance has no effect, whereas in the documentation it is written

In order to simplify the input, default values for all parameters except the volume are provided. The capacitance will be automatically set to a default value of 1.2*volume. However, it is recommended to check the default values carefully and to adjust them if necessary.
De : Maurice Charbit - OZE-ENERGIES
Envoyé : mercredi 17 novembre 2021 14:07
À : trnsys-users@lists.onebuilding.org <trnsys-users@lists.onebuilding.org>
Objet : python/trnsys
 

Hi all,

 

I am using subprocess.call in Python to run trnsys

When trnsys crash, trnsys opens a windows and waits for a manual response. How can I circumvent this issue ?

 

Regards

 

Maurice


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