Calculating the Solar Heat Gain of Window Frames
Abstract
It is not practical to measure the solar heat gain of a window frame. It is more practical to do so by calculation. Typically, the frame solar heat gain is a small component of the total or is small in absolute terms so an approximate method is satisfactory. A simple approach for calculating the solar heat gain coefficient of any opaque window component is developed. The parameters appearing in the expression clearly identify the mechanisms of frame solar gain and indicate the ways in which it can be controlled. A particularly simple expression can be applied to any frame geometry for cases in which the solar radiation is incident normal to the window. This is especially useful because this condition is frequently used for energy rating purposes, code compliance, and design. It is shown that this expression is also valid for off-normal incidence as long as no part of the frame is shaded. An adjustment, based only on frame surface geometry, can be applied if the frame is partially shaded. Sample calculations closely reproduce the results of detailed two-dimensional numerical simulation.
Cite this version of the work
John L. Wright, Alexander G. McGowan
(1999).
Calculating the Solar Heat Gain of Window Frames. UWSpace.
http://hdl.handle.net/10012/11581
Other formats
Related items
Showing items related by title, author, creator and subject.
-
Forging links between innovation and sustainability:An empirical examination of the effects on a firm’s financial performance
Gabriel, Amir (University of Waterloo, 2016-04-29)Greenhouse gas (GHG) emissions from the North American energy and energy-intensive materials production sectors account for more than 50 percent of total GHG emissions. Based on the argument that CO2 emissions need to be ... -
Residential Solar Energy Adoption in a Community Context: Perceptions and Characteristics of Potential Adopters in a West Toronto Neighbourhood
Sherk, Theodore (University of Waterloo, 2012-01-25)In the summer of 2007, a single neighbourhood in downtown Toronto contributed at least 13 percent of all residential grid‐tie solar photovoltaic (PV) systems sold in the Canadian province of Ontario. On average, PV ... -
A Task Offloading Framework for Energy Saving on Mobile Devices using Cloud Computing
Altamimi, Majid (University of Waterloo, 2015-01-06)Over the last decade, mobile devices have become popular among people, and their number is ever growing because of the computing functionality they offer beyond primary voice communication. However, mobile devices are ...