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Implementation of Thermochromic Window

asked 2016-01-28 16:14:42 -0600

Adam Hilton gravatar image

I understand both from observing and the issue tracker that the WindowMaterial:GlazingGroup:Thermochromic object is incorrectly implemented in the current GUI for the 1.10 OS release. Will there be negative repercussions if I attempt to write a measure that will allow me to correctly implement the object?

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answered 2016-01-29 11:37:02 -0600

In OS you could use shading controls switchable glazing:

OS Shading Controls

With this you could either assign a schedule to change the glass from a high SHGC to a low SHGC. This would be difficult to create this schedule but could be done. I would recommend using the control "OnIfHighSolarOnWindow" which changes the glazing based on the W/m2 solar energy. You can change the W/m2 solar energy setpoint and tune it to your liking.

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While not a perfect proxy for the way thermochromic glazings function, @TaylorRoberts is right; you could use the OS Shading Control and operate it on the "OnIfHighSolar" algorithm to kinda-sorta simulate thermochromics. FWIW, the OpenStudio Radiance measure also supports this control.

rpg777 gravatar image rpg777  ( 2016-01-29 12:35:30 -0600 )edit
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answered 2016-01-29 09:48:14 -0600

updated 2016-01-29 09:50:09 -0600

It would help if you explained your strategy for "correctly implementing" the object before anyone comments on the potential negatives. I ASSume you would use EMS? @BrianLBall here has some examples of how to insert EMS into an OpenStudio workflow via measures.

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@rpg777, I like your use of capitalization. Subtle!

__AmirRoth__ gravatar image __AmirRoth__  ( 2016-01-29 10:45:01 -0600 )edit

I've learned my lesson(s) about making those assumption things.

rpg777 gravatar image rpg777  ( 2016-01-29 10:50:35 -0600 )edit

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Asked: 2016-01-28 16:14:42 -0600

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Last updated: Jan 29 '16