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cstb / citygml-energy

CityGML Energy ADE
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g-value and conductivity for Windows #39

Closed PRemmen closed 8 years ago

PRemmen commented 9 years ago

A widley used property for the calculation of transmitted solar gains through a window is the g-value. Right now it seems that it is missing in the schema, correct me if I'm wrong. The g-value is comparable to the uValue, since it is typically calculated for the whole window and not single panes. Considering that, I would suggest to implement the gValue in _Opening, but I'm not a expert in UML Design.

Also it seems that thermal properties like conductivity, density etc. can't be set for glazing, again: correct me if I'm wrong :)

RomainNouvel commented 9 years ago

g-value corresponds to the solar energy transmittance. It is then considered in the type Transmittance / wavelengthRange = Solar. You can associate this type presently to an object Construction (which can be associate to an object _Opening). Interesting would be also to associate it to the object Layer or LayerComponent to model a window with a frame.

Concerning the second point, you're right. We definitely must break the inheritance between Glazing and AbstractMaterial (see proposition of issue #38 )

RomainNouvel commented 8 years ago

No change requested. Precision must be integrated in the documentation / guidelines.