Main Article Content
Most probably, all our buildings are affected by sunlight. Hence, the ignorance of the sun’s impact results in overheating, glare, and missed opportunities for the positive use of daylight, leading to wasted energy. Heliodon is considered to be a powerful tool that can aid students, professionals, building developers and users to better understand the relationship between the sun’s path and its effects on the architectural model(s). Most of the heliodons are relatively expensive and complex in operation. Thus, the need to design and build a simple and relatively inexpensive one emerged. It was proposed to work on this heliodon as a team project in the environmental control class “fall-2016”. The authors put the design concept and introduced a mathematical calculations table to be used with the physical heliodon, while nine students participated in the manufacturing process. The design concept is based on determining the sun’s position by converting the Altitude and Azimuth angels to their corresponding measurements on the (X, Y & Z) coordinates (in relation to the observer’s location). One light source can be moved on a set of graded tubes assembled in the shape of a wire frame box (thus the X, Y & Z distances could be measured) to simulate the sun’s position and its lighting conditions for any latitude, at any time for any chosen day.
Beal,G.M.(1957). Natural Light and the Inside-Outside Heliodon, University of Kansas publications. the bulletin of engineering and architecture, 38, 12-13.
Cheung, K.P. (2000). A Multi-Lamp Heliodon for Architectural Schools, International Journal of Architectural Science, 1(1), 46-58.
Cheung, K.P. (2011). A Discussion on the Design Principles of a Patented Portable Direct Sunlight Light-Duty Universal Heliodon Mounted on a Camera Tripod. International Journal of Architectural Science, 8(4), 98-113.
Lechner, N. (2001). The Sun Emulator: A Conceptually Clear Heliodon. Proceedings of the ASCA “Association Colligate Schools of Architecture” Technology conference, 116-118.
Lechner, N. (2008). Heating, Cooling, Lighting: Sustainable Design Methods for Architects, 3rd. Ed., NY, USA, John Wiley & Sons,.404.
Szokolay, S.V. (2008). Introduction to Architectural Science: The basis of Sustainable Design, 2nd. Ed., Elsevier, USA, 22-24.
URL4 http://www.moee.gov.eg/english_new/EEHC_Rep/2014-2015en.pdf (pp.18 & pp.43)