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Daylighting performance evaluation of a bottom-up motorized roller shade

Kapsis, K., Tzempelikos, A., Athienitis, A. K. and Zmeureanu, R. G.
2010
Solar Energy, 84(12): 2120-2131
Daylighting; Shading control; Electric lighting consumption; Work plane illuminance

Kapsis, K., Tzempelikos, A., Athienitis, A. K. and Zmeureanu, R. G., (2010), "Daylighting performance evaluation of a bottom-up motorized roller shade", Solar Energy, 84(12): 2120-2131.
Abstract:
This paper presents an experimental and simulation study for quantifying the daylighting performance of bottom-up roller shades installed in office spaces. The bottom-up shade is a motorized roller shade that opens from top to bottom operating in the opposite direction of a conventional roller shade, so as to cover the bottom part of the window, while allowing daylight to enter from the top part of the window, reaching deeper into the room. A daylighting simulation model, validated with full-scale experiments, was developed in order to establish correlations between the shade position, outdoor illuminance and work plane illuminance for different outdoor conditions. Then, a shading control algorithm was developed for application in any location and orientation. The validated model was employed for a sensitivity analysis of the impact of shade optical properties and control on the potential energy savings due to the use of daylighting. The results showed that Daylight Autonomy for the bottom-up shade is 8?8% higher compared to a conventional roller shade, with a difference of 46% further away from the façade, where the use of electric lighting is needed most of the time. The potential reduction in energy consumption for lighting is 21?1%.

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Author Information and Other Publications Notes
Kapsis, K.
     
Tzempelikos, A.
  1. A methodology for simulation of daylight room illuminance distribution and light dimming for a room with a controlled shading device
  2. Indoor thermal environmental conditions near glazed facades with shading devices ?Part I: Experiments and building thermal model
  3. Simulation of fa?ade and envelope design options for a new institutional building
  4. The effect of reflective coatings on building surface temperatures, indoor environment and energy consumption--An experimental study  
Athienitis, A. K.
Department of Building, Civil, and Environmental Engineering, Concordia University, Montreal
  1. A methodology for simulation of daylight room illuminance distribution and light dimming for a room with a controlled shading device
  2. A prototype photovoltaic/thermal system integrated with transpired collector
  3. A review of research activities in energy efficiency in buildings in Canada
  4. A study of design options for a building integrated photovoltaic/thermal (BIPV/T) system with glazed air collector and multiple inlets
  5. Building simulation in a mathematical programming environment
  6. Comparaison de m¨¦thodes de mesure de flux de chaleur pour sp¨¦cimens de grandes et moyennes dimensions
  7. Design and construction of an environmental chamber facility
  8. design and thermal performance of a BIPV/T system thermally coupled with a ventilated concrete slab in a low energy solar house: Part 2, ventilated concrete slab
  9. Design Methodology of Solar Neighborhoods
  10. Environmental chamber for investigation of building envelope performance
  11. Essai sur les toits plats isol¨¦s ¨¤ la fibre de cellulose
  12. Experimental study of the thermal performance of a large institutional building with mixed-mode cooling and hybrid ventilation
  13. Impact of air leakage pattern on reinsulated walls
  14. Indoor thermal environmental conditions near glazed facades with shading devices ?Part I: Experiments and building thermal model
  15. Investigation of the thermal performance of a passive solar test-room with wall latent heat storage
  16. Modeling of energy performance of a house with three configurations of building-integrated photovoltaic/thermal systems
  17. Modeling, design and thermal performance of a BIPV/T system thermally coupled with a ventilated concrete slab in a low energy solar house: Part 1, BIPV/T system and house energy concept
  18. Numerical model of a building with transparent insulation
  19. Simulation of fa?ade and envelope design options for a new institutional building
  20. Study of the reduced impact of thermal bridges in two sprayed-applied polyurethane wall assemblies
  21. Testing of flat roofs insulated with cellulose fiber
  22. Use of an environmental chamber to investigate large-scale envelope specimen hygrothermal performance  
Zmeureanu, R. G.
     


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