Window sub-components #202
Conversation
Most of the selections are not appropriate. I don't think the type of insulation is very important in this situation, It may not be readily observable given that the insulation panels may be purchased as a finished product
I don't think so. They are part of the home constructions, where as the exterior shading products are more like accessories. They also have a separate set of properties.
I don't think so. I think it generally treated as a decorative choice rather than an energy choice. It's impact is also very subject to occupant behavior.
Probably :-) |
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@nmerket That third item should be adding summer and winter shading factors |
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@GamalielL Thanks fixed it. |
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Including the changes discussed today: |
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Some thoughts on the
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We use Interior and Exterior Attenuation Coefficient. I think I got that
from the ASHRAE HoF Fenestration chapter, so maybe not the best layman's
term.
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…On Wed, Oct 23, 2019 at 2:28 PM Leo Rainer ***@***.***> wrote:
Some thoughts on the ShadingFactor elements:
- Should definitely stay with the 1 is no effect and 0 is opaque
convention. This is used by both building models (SC, SHGC, shading
multipliers, etc) and by product vendors (window films, solar screens, etc)
in their specifications (SHGC, g-value, etc).
- I think the issue with interpretation occurs due to having Shade in
the name of the element. People may interpret this to mean that the element
affects the fraction of shading rather than solar gain.
- We should definitely add documentation explaining the usage.
- We should consider changing the name of the elements to use
something more intuitive. Some options:
- SolarGain
- SolarFactor
- SolarTransmittance
- I looked in BEDES and BuildingSync and didn't find anything
appropriate.
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ACCA Manual J |
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RESNET calls it "Interior Shade Coefficient: and IECC calls it "Interior
Shade Fraction"
…On 10/23/2019 4:21 PM, Scott Horowitz wrote:
ACCA Manual J and RESNET call it Internal Shading Coefficient (ISC).
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If ShadingFactor is supposed to be equivalent to SHGC, I don't think you want to have "Interior" as part of the name. |
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I'm going to call them |
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Here's what the shading And the annotations read: Winter Shading Coefficient
Summer Shading Coefficient
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@nmerket What about the hpxml/schemas/BaseElements.xsd Line 4206 in fbf6868 |
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@lirainer Good catch. I made the change. |
Fixes #12.
Moving a bunch of window features into separate sub components with their own ids.
Questions:
MoveableInsulation/Materialuses the same list that's in any other insulation element. Is that appropriate here?Overhangsbe connected to or underExteriorShading?