Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Since the Simple Glazing System won't work, you're stuck with using a Construction object, which requires consistent Material object references (all opaque materials or all window glass / gas / shade / screen / etc. materials). Modeling the assembly as an opaque construction usually means the GLAZING must be opaque and will only reflect or absorb heat, not let it pass through. You could use the Transparent Opaque Material object that converts received short-wave radiation into transmitted long-wave radiation. However, this object assumes the assigned transparent surface has no thermal resistance and zero convection on both sides of the surface (source: Engineering Reference).
Your other alternative is to create a window construction and model the aluminum plate and mineral wool as window layers. The best option for this is likely the Window Shade object, since you can input a thickness and conductivity for the layer and this object requires MUCH less transmittance / reflectance input fields than Window Glazing objects. The window construction approach would likely be more accurate than modeling an opaque construction, since it would allow sunlight to pass through the outside glazing layer where the opaque approach would not.
