[Bldg-sim] Exterior Shading Analysis - Comfort Metrics?

[Nathan Brown via Bldg-sim]

Hi Coles —

Check out the SolarCal tool that’s part of the CBE comfort tool <http://comfort.cbe.berkeley.edu/>. It provides a way to modify the MRT based on solar radiation. There is also a component of Ladybug (a Grasshopper plugin)  called the Outdoor Solar Temperature Adjustor that will perform a similar calculation. Both are based on Arens et al (2015) <http://escholarship.org/uc/item/89m1h2dg>.

Best,
Nathan


Nathan Brown, BEMP, LEED AP ~ Associate
LOISOS + UBBELOHDE
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> On Dec 16, 2016, at 11:05 AM, Jennings, Coles via Bldg-sim <bldg-sim at lists.onebuilding.org> wrote:
> 
> Hello all,
>  
> I’ve been asked by a client to complete a shading analysis that quantifies the impact of an exterior canopy on the comfort of occupants outside of the building in a courtyard area. In the past, I’ve done solar irradiance simulations to show the effect of shading, but irradiance doesn’t directly translate to comfort in a straightforward way.
>  
> I’d like to be able to quantify how the canopy will increase the amount of time that occupants will want to spend outside in the courtyard. For example - per this metric, the number of comfortable hours in the courtyard will increase by X% over the year. 
>  
> I know the heat index is commonly used to assess comfort, but this only includes temperature and humidity, not a solar component.
>  
> Has anybody completed a study like this? If so, what metrics did you use to provide meaningful feedback on the effect of the exterior shading on occupant comfort (outside of the building)?
>  
> Thanks,
>  
>  
> 
> 
> Coles Jennings PE, BEMP, LEED AP BD+C 
> Sr. Energy Engineer, Building Sciences Manager | Mason & Hanger 
> A Day & Zimmermann Company 
> D 804.521.7045 | O 804.285.4171 | F 804.217.8520 
> 4880 Sadler Road, Suite 300 | Glen Allen, VA 23060 
> Mason & Hanger <http://www.masonandhanger.com/> 
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