Lec18 - 13h 14h 15h 16h 17h 18h 19h Dec 21 Nov 21 Oct 21 Sep 22 Aug 22 Jul 21 Jun 21 Dec 21 Jan 21 Feb 20 Mar 20 Apr 20 May 21 Jun 21 North East

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Experimental approaches Scale models ± qualitative (visualization) and quantitative (meters) assessments ± difficulties: ­ reproduction of building geometry, materials, details ­ simulation/control of lighting conditions, photometers
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Experimental approaches Scale models ± experimental set-up ­ scale choice (often 1:20 or 1:30) ­ reference photometer ­ similar surface materials
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Experimental approaches Scale models ± experimental set-up ­ testing of different alternatives to seek for optimum Final configuration: 30% D. factor increase in back of room + contrasts decrease for outside view Initial configuration
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Experimental approaches Need for a reliable light source ± real sun and sky ­ sundials (shadows) ­ conditions impossible to control, difficult to assess
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MIT portable heliodon Sunny operation
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MIT portable heliodon Cloudy operation South 150 120 210 240 60 30 300 330 80 70 60 50 40 30 20 10 5h 6h 7h 8h 9h 10h 11h 12h
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Unformatted text preview: 13h 14h 15h 16h 17h 18h 19h Dec 21 Nov 21 Oct 21 Sep 22 Aug 22 Jul 21 Jun 21 Dec 21 Jan 21 Feb 20 Mar 20 Apr 20 May 21 Jun 21 North East West Figure by MIT OCW. Experimental approaches Need for a reliable light source ± artificial sun and sky (lamps) ­ Sky Simulator Domes ­ Heliodons Experimental approaches Sky simulators ± mirror sky ± sky dome ± spotlight sky simulator ± scanning sky simulator Experimental approaches Sky simulators ± Parallax error M N S N S N S M M 'Correct' luminance distribution Parallax error Parallax error 250 200 150 100 50-1.0-0.5 0.0 0.5 1.0 (North) Displacement from origin (R) (South) N S Vertical Illuminance (LUX) Alt.=45 Alt.=30 Alt.=15 Alt.=60 Figures by MIT OCW. Experimental approaches Sun simulators ± Heliodons 21 Jun 21 Mar / Sept W E S N Z Figure by MIT OCW....
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This note was uploaded on 12/05/2009 for the course COA 4403 taught by Professor Test during the Spring '09 term at Georgia Institute of Technology.

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Lec18 - 13h 14h 15h 16h 17h 18h 19h Dec 21 Nov 21 Oct 21 Sep 22 Aug 22 Jul 21 Jun 21 Dec 21 Jan 21 Feb 20 Mar 20 Apr 20 May 21 Jun 21 North East

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