[TRNSYS-users] Massless layer + Very small zone

[RENZI Virginie 217644]

Dear users,

 

I'm trying to model a small box made of aluminium (2mm thick) and in order to define the walls I used a massless layer. Thus I entered a thermal resistance (thickness divided by conductivity) for my new layer but the U-value given in the Wall Type Manager is different from my corresponding U-value. Does someone know why? Does it deal with the "combined heat transfer coefficients"? Is the U-value from the Wall Type Manager used at some point in the calculation?

 

I have another question, related to the size of the zone. It seems that it is not possible to enter a wall area smaller than 0.1m². Is it right? if yes, is there another way to model a very small zone?

 

Thanks for your help

 

Virginie

 

 

 

 

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