Effective Solar shadings of residential windows

The project consists of two phases. The first phase develops through field-testing and simulation guidelines to use internal reflective and external insulating solar shadings of residential windows. The project will address thermal peak loads and energy consumption of new and retrofit Canadian houses, energy costs and paybacks, thermal comfort of house occupants, potential moisture condensation on windows and durability of window products. The second phase will address field-demonstration of motorized solar shadings and efficient control-integration with house heating and cooling systems.

The objectives of the first phase include:

• To collect information on how house occupants behave towards the usage and control of shadings in houses. The aim is to identify the parameters that drive occupants to close/open shadings (time control, intensity of solar radiation, outdoor temperature, visual privacy, thermal comfort, indoor plant growth, etc.).
• To assess the effects of solar shadings on the thermal peak loads and energy demand for cooling and heating of old and new houses.  
• To assess the effects of the combination of shading and window types on thermal comfort of occupants seated near windows, risk of moisture condensation on window surfaces, and risk of excessive thermal stresses of window glass.
• To evaluate the energy cost and paybacks from installing solar shadings in retrofit and new homes.

Reports

Guidelines for Effective Residential Solar Shading Devices
Laouadi, A.
Research Report, NRC Institute for Research in Construction, 300, pp. 117. 2010-03-01
(RR-300)
[Full citation / Référence complète]

Articles

Window shadings reduce residential cooling energy
Laouadi, A. Galasiu, A.D.
Solplan Review, (144)
pp. 18-19. 2009-01-01
[Full citation / Référence complète]

Guidelines for effective solar shading of residential windows to be developed
Laouadi, A.
Construction Innovation, 12 (4)
pp. 9. 2007-12-01
[Full citation / Référence complète]

Papers

Thermal modeling of shading devices of windows
Laouadi, A.
ASHRAE Transactions, 115 (2)
pp. 1-20. 2009-06-01
[Full citation / Référence complète]

Field performance of exterior solar shadings for residential windows: summer results
Laouadi, A. Galasiu, A.D. Swinton, M.C. Armstrong, M.M. Szadkowski, F.
12th Canadian Conference on Building Science and Technology (Montréal, Quebec, 2009-05-06)
pp. 197-210.
[Full citation / Référence complète]

Field performance of exterior solar shadings for residential windows: winter results
Laouadi, A. Galasiu, A.D. Swinton, M.C. Manning, M.M. Marchand, R.G. Arsenault, C.D. Szadkowski, F.
IBPSA-Canada eSim Conference (Quebec City, 2008-05-20)
pp. 1-8. 2008-05-20
[Full citation / Référence complète]