A heliodon with dichromatic lamps for horizontally placed buidling models
Authors
Citation
Hong Kong Papers in Design and Development, v.1, 1998, pp. 34-39
Abstract
Heliodons have been developed to stimulate the position of the sun in relation to a building model. Early heliodons (Dufton and Beckett 1931:509) stimulated the position of the sun with a movable lamp bulb, impinging light onto a building model which had to be titled and rotated to stimulate the required latitude and time. Later heliodons (Olgyay and Olgyay 1957:22-22; Philips 1987) improved on operation convenience, allowing the building model to be placed horizontally, and stationary once the latitude is set. Other practitioners (Robbins 1986) examined annual insulation/shading on massing models by putting red, green, blue lamps (i.e. dichromatic lamps) respectively at June, September/March, December locations of the lamp holder on the D&F heliodon (Dufton and Beckett 1931), thus improving its capability. Aiming at combining the convenience of placing physical building models horizontally and stationary, and putting up dichromatic lamps if required, a heliodon has been developed. This paper reports on this heliodon.
(1) Nomenclature
(2) Introduction
(3) The seasonal variation
(4) The hourly change of the sun in a day
(5) The latitude variation
(6) The heliodon and the building model
(7) Use in Southern hemisphere
(8) Conclusion
Description
Subject
Type
Article
Format
Date
1998
Language
en