UTCI and clothing levels

grasshopper honeybee-legacy
1

Hi All,

Is there a way to account for clothing levels within UTCI outdoor comfort calculation in honeybee?

I can see clothing absorptivity in the below component, but not clothing levels. Is clothing level something built in the calculation of UTCI itself, if so how does it work?

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Many thanks :slight_smile:

2

Citing the UTCI website:

“Universal Thermal Climate Index” (working title) shall be developed satisfying the following requirements:
-.
-.
-.
-. independent of person’s characteristics (age, gender, specific activities and clothing etc.).

-A.

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Thanks for this @AbrahamYezioro. I will try to have a further read through the UTCI website.

I saw this image below about UTCI and looks like there is a clothing model coming into the equation, but not sure how is that done.

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4

Hi @chris

would you be able to explain to me please how the clothing model was taken into account in Honeybee_Outdoor_Comfort Analysis recipe component for UTCI?

many thanks

5

@Farah.H ,

Just search the other UTCI discussions on the forum:
https://discourse.ladybug.tools/search?q=UTCI

I would also point you towards the most recent SDK documentation on the UTCI model in the ladybug_comfort Python package, which includes links to the source code that outputs the UTCI values (aka. the 200-term polynomial approximation):
https://www.ladybug.tools/ladybug-comfort/docs/ladybug_comfort.utci.html

The clothing model obviously isn’t explicit in the polynomial approximation but it was used in the original Fiala human energy balance data set that was used to derive the polynomial.

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