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JacksonJ-KC
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**Rule ID:** 5-45
**Rule Description:** The baseline above-grade wall surfaces shall be modeled with a thermal emittance of 0.90.
**Rule Assertion:** B-RMD SurfaceOpticalProperties:absorptance_thermal_exterior = 0.90
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It is my understand that absorptance and emittance are different properties

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absorptance = emittance for opaque surfaces at equilibrium

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Okay, this is not fresh in my mind so I will trust your knowledge.


**Rule Assertion:**

- Case 1: If above-grade wall surface thermal emittance is equal to 0.90: `if surface_optical_properties_b.absorptance_thermal_exterior == 0.90: PASS`
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Same comment as above regarding absorptance and emittance

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Okay, this is not fresh in my mind so I will trust your knowledge.

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For peace of mind, this is how it was done for other emittance requirements too

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looks good

@weilixu
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weilixu commented Sep 30, 2025

Addressed in 295bd10 and 5457c0d

@weilixu weilixu closed this Sep 30, 2025
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4 participants