Comparison of Window Glazing technology

Window Installation

Window Installation

Over the last decade or so, glazing technologies are maturing to provide better energy savings combining the overall effects of solar gains and the insulating values. With the advent of spectrally selective glazing and their increasing use in the North American housing markets, it is important to establish the energy performance parameters. During the winter heating season of 2005-2006 and the summer cooling season of 2006, the Canadian Centre for Housing Technology (CCHT) ran a series of tests to determine the impact of spectrally selective coated glass on energy consumption at its twin R-2000 house facility.

Illustration of the two window glazings

Illustration of the two window glazings

Two low-emissivity (low-e) coatings were compared on a whole house basis: a high solar heat gain glazing and a low solar heat gain glazing technology. In addition to impact on energy consumption, differences in room temperatures, window surface temperatures, and the transmission of solar radiation were evaluated. Energy use predictions using the energy simulation models (ESPr and HOT-2000) were compared using the monitored data from this research facility. In turn, the models were applied to different locations across North America to determine the benefits of different types of glazing on annual energy and costs in different Canadian and US climates.

Articles

ARCHIVED - Sélection de vitrages de fenêtres de type résidentiel pour un rendement énergétique optimal (PDF format, 261 KB) (French only)
Rousseau, M.Z.
Échos Techniques, 14 (92)
pp. 1-8. 2009-01-01

ARCHIVED - Window glazing study at CCHT shows good results (PDF format, 229 KB)
Armstrong, M.M. Burrows, J.
Solplan Review, (143)
pp. 14-15. 2008-09-01

ARCHIVED - Selecting low-E glazing for optimum energy performance (PDF format, 243 KB)
Manning, M.M. Elmahdy, A.H. Swinton, M.C. Parekh, A.
Home Builder, 21 (2)
pp. 12. 2008-03-01

Study comparing high-performance windows yields strategies for reducing heating and cooling loads
Manning, M.M.
Construction Innovation, 13 (1)
pp. 7. 2008-03-01

Construction Technology Updates

Selecting Residential Window Glazing for Optimum Energy Performance
Armstrong, M.M. Elmahdy, A.H. Swinton, M.C. Parekh, A.
Construction Technology Update, 71
pp. 7. 2008-12-01

Papers

ARCHIVED - Summer and winter field monitoring of high and low solar heat gain glazing at a Canadian twin house facility (PDF format, 467 KB)
Manning, M.M. Elmahdy, A.H. Swinton, M.C. Parekh, A. Szadkowski, F. Barry, C.
ASHRAE Transactions (Salt Lake City, Utah, 2008-06-21)
pp. 1-17.

ARCHIVED - Selection of optimum low-e coated glass type for residential glazing in heating dominated climates (PDF format, 512 KB)
Barry, C.J. Elmahdy, A.H.
Glass Performance Days 07 Proceedings (Tampere, Finland, 2007-06-15)
pp. 1-13. 2007-06-15

ARCHIVED - Field assessment of the effect of different spectrally selective low emissivity glass coatings on the energy consumption in residential application in cold climates (PDF format, 351 KB)
Swinton, M.C. Manning, M.M. Elmahdy, A.H. Parekh, A. Barry, C. Szadkowski, F.
11th Canadian Building Science and Technology Conference
(Banff, Alberta, 2007-03- 22)
pp. 1-16. 2007-03-22

Report

ARCHIVED - Field Assessment of the Thermal Characteristics of Innovative Glazing Systems at the Canadian Centre for Housing Technology (PDF format, 2.6 MB)
Manning, M.M. Elmahdy, A.H. Swinton, M.C. Szadkowski, F.
pp. 135. 2008-01-29