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A simple-to-use calculator for determining the total solar heat gain of a glazing system

Luther, M.B., Horan, P. and van, Kan D.J. 2012, A simple-to-use calculator for determining the total solar heat gain of a glazing system, in ASA 2012 : Building on knowledge, theory and practice : Proceedings of the 46th Annual Conference of the Architectural Science Association, Architectural Science Association, Gold Coast, Qld., pp. 1-7.

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Title A simple-to-use calculator for determining the total solar heat gain of a glazing system
Author(s) Luther, M.B.
Horan, P.
van, Kan D.J.
Conference name Architectural Science Association. Conference (46th : 2012 : Gold Coast, Queensland)
Conference location Gold Coast, Queensland
Conference dates 14-16 Nov. 2012
Title of proceedings ASA 2012 : Building on knowledge, theory and practice : Proceedings of the 46th Annual Conference of the Architectural Science Association
Editor(s) [Unknown]
Publication date 2012
Conference series Architectural Science Association Conference
Start page 1
End page 7
Total pages 7
Publisher Architectural Science Association
Place of publication Gold Coast, Qld.
Summary Architects and designers could readily use a quick and easy tool to determine the solar heat gains of their selected glazing systems for particular orientations, tilts and climate data. Speedy results under variable solar angles and degree of irradiance would be welcomed by most. Furthermore, a newly proposed program should utilise the outputs of existing glazing tools and their standard information, such as the use of U-values and Solar Heat Gain Coefficients (SHGC’s) as generated for numerous glazing configurations by the well-known program WINDOW 6.0 (LBNL, 2001). The results of this tool provide interior glass surface temperature and transmitted solar radiation which link into comfort analysis inputs required by the ASHRAE Thermal Comfort Tool –V2 (ASHRAE, 2011). This tool is a simple-to-use calculator providing the total solar heat gain of a glazing system exposed to various angles of solar incidence. Given basic climate (solar) data, as well as the orientation of the glazing under consideration the solar heat gain can be calculated. The calculation incorporates the Solar Heat Gain Coefficient function produced for the glazing system under various angles of solar incidence WINDOW 6.0 (LBNL, 2001). The significance of this work rests in providing an orientation-based heat transfer calculator through an easy-to-use tool (using Microsoft EXCEL) for user inputs of climate and Solar Heat Gain Coefficient (WINDOW-6) data. We address the factors to be considered such as solar position and the incident angles to the horizontal and the window surface, and the fact that the solar heat gain coefficient is a function of the angle of incidence. We also discuss the effect of the diffuse components of radiation from the sky and those from ground surface reflection, which require refinement of the calculation methods. The calculator is implemented in an Excel workbook allowing the user to input a dataset and immediately produce the resulting solar gain. We compare this calculated total solar heat gain with measurements from a test facility described elsewhere in this conference (Luther et.al., 2012).
Language eng
Field of Research 120104 Architectural Science and Technology (incl Acoustics, Lighting, Structure and Ecologically Sustainable Design)
Socio Economic Objective 859899 Environmentally Sustainable Energy Activities not elsewhere classified
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2012, ANZAScA
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051735

Document type: Conference Paper
Collections: School of Architecture and Built Environment
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