A skin can open and close according to the humidity change

Replies to This Discussion

Permalink Reply by Nathan Hoofnagle on December 22, 2012 at 10:36am

I know Varsari allows you to place your building with geo coordinate locations and extract precise sun angle and temp data as excel files similar to ecotect.  The surface of the building needs to be subdivided and each subsurface or "panel" is assigned a value from the sun angle/temp, ect.  This excel file can then be imported as a live link into grasshopper and reassigned to the panel list to generate individual responses.  I'm not sure about humidity.  Maybe this can be interpolated from the temperature and altitude of the site.  Hope this helps.  Here is a good theoretical reference.

http://www.philipperahm.com/data/projects/vaporapartments/index.html

Permalink Reply by Mat K on December 22, 2012 at 2:11pm

Thanks for help!It is one of my course works,the purpose is to make a pavilion that  can close automatically if it rains outside.At the very beginning,I thought rain might related to the humidity values but it seems to be wrong.So what sort of factors I can choose to control it ?Or if foget the rain, what can I do with the humidity?

Permalink Reply by djordje on December 22, 2012 at 10:50am

Hi Mat,

Humidity analysis lies in the field of Computational Fluid Dynamics. At the moment Rhino can not deal with CFD. It sort of can, but not in this area you are looking for.
This means you will have to do an analysis in some other software package like FloEFD. Set points on particular places inside your analysis domain, and get (relative) humidity values for each point. Export those point coordinates and humidity values % into an excel file. Then reimport the Excel file into Grasshopper.

For the grasshopper part of your project, you need a "Rotate" component where angle of rotation will correspond to the value you got from the excel humidity file.

Permalink Reply by Mat K on December 22, 2012 at 2:18pm

Hi djordje,

Thanks for help!The purpose of my work is to make a pavilion that  can close automatically if it rains outside.At the very beginning,I thought rain might related to the humidity values but it seems to be wrong.I need some theoretical referances or precedents to support it,to find a new way

Permalink Reply by Chris Tietjen on December 22, 2012 at 11:31am

Is the humidity you're measuring inside each room of the building or outside?

Permalink Reply by Mat K on December 22, 2012 at 2:22pm

Hi ,Chris

The purpose of my work is to make a pavilion that  can close automatically if it rains outside.But I find it seems to be wrong that rain is not just decided by the humidity.So could you give me some other suggestions.

Permalink Reply by Kyle on December 26, 2012 at 10:42pm

To determine if it's raining, you might use one or more moisture sensors connected to actuators that open and close your windows. A moisture sensor often works with an open circuit that can be completed in the presence of moisture (actually run a current over a wet medium).