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Federation of European Heating, Ventilation and Air-conditioning Associations
Address:
Rue Washington 401050 Brussels
Belgium
www.rehva.eu
[email protected] Tel: +32 2 514 11 71
Fax: +32 2 512 90 62
Federation of European Heating, Ventilationand Air Conditioning Associations
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Federation of European Heating, Ventilation and Air-conditioning Associations
Use of REHVA Guidebook
Power Point Presentations
This Power Point Presentation can be freely
used for training purposes by REHVA members.It is prepared by the main author to the REHVAGuidebook.
Please refer the original author always when
making the presentation.Inform REHVA secretariat each time thepresentation is used: [email protected]
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Federation of European Heating, Ventilation and Air-conditioning Associations
SolarShading
by
Wouter Beck (ed.),Dick Dolmans,
Gonzague DutooAnders Hall
Olli Seppnen
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Federation of European Heating, Ventilation and Air-conditioning Associations
Task force Solar Shading
started 2008
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Federation of European Heating, Ventilation and Air-conditioning Associations
Table of Contents
Terminology Solar radiation
Effect of windows on indoor environment
Window systems
Energy effects of solar shading
How to choose a shading solution
Automating and integrating solar shading
Existing buildings Double-skin facades
Maintenance of solar shading systems
Cases
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Federation of European Heating, Ventilation and Air-conditioning Associations
Reviewers
Prof. Jan Hensen, Eindhoven University of
Technology, The Netherlands
Prof. Mat Santamouris, University of
Athens, Greece
Herv Lamy, SNFPSA, Paris, France
Prof. Michael G Hutchins, Sonnergy Ltd,
Abingdon, UK
Dr. Thanos Tzempelikos, Purdue
University, West Lafayette, IN, USA
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Solar radiation
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Solar paths
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Solar irradiance on a faade(lat. 50 N, clear sky)
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Solar irradiance on a faade(lat. 50 N, clear sky)
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Solar irradiance on a faade(lat. 50 N, clear sky)
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Solar irradiance on a faade(lat. 50 N, clear sky)
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Effect of windows on indoor environment
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Effect of windows on indoor
environment
Thermal comfort
Visual comfort
Acoustic comfort
Indoor air quality
Daylighting Impact of productivity
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Thermal comfort
Air temperature
Radiant temperature
Operative temperature
Relation to office
worker productivity
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Visual comfort
Contact with the outdoors
Absolute brightness
Luminance ratios
Color rendition
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Effect of good visual comfort
3.75% median productivity increase [CMU]
20 to 25% less health complaints
[Hartkopf]
15% reduced absenteeism [Thayer]
10 to 25% better performance on test of
mental function
20 to 26% faster progress of students
[Heshong]
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Predicting visual comfort
Photo: Hunter Douglas
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Predicting visual comfort
Photo: Hunter Douglas
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Federation of European Heating, Ventilation and Air-conditioning Associations
The economic impact of
productivity
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Federation of European Heating, Ventilation and Air-conditioning Associations
Window systems
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Federation of European Heating, Ventilation and Air-conditioning Associations
Glazing properties
Thermal transmittance U [W/m2K]
Light transmittance Tv [-]
g-value [-]
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Federation of European Heating, Ventilation and Air-conditioning Associations
Energy flows
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Federation of European Heating, Ventilation and Air-conditioning Associations
Convection loads
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Federation of European Heating, Ventilation and Air-conditioning Associations
Cooling loads no shading
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Surface temperature interior
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Federation of European Heating, Ventilation and Air-conditioning Associations
Surface temperature interior
window pane under peak load
conditions
no shading
Surface temperature interior
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Federation of European Heating, Ventilation and Air-conditioning Associations
Surface temperature interior
window pane under peak load
conditions
exterior shading
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Federation of European Heating, Ventilation and Air-conditioning Associations
Influence of shading on
lighting needs
Daylight illuminance in a south oriented officeautomatic Venetian blind @ 200 W/m2
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Energy effects
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Federation of European Heating, Ventilation and Air-conditioning Associations
Standard office
dimension 3.6 x 5 x 3 m
ventilation 1.5 dm3/m2s
infiltration 0.1 ACH
daylight dependent lighting 500 lx
max. internal load art. lighting 12 W/m2
internal loads people 10 W/m2
internal loads equipment 15 W/m2
thermostat cooling 25/30 C (8-18/otherwise)
thermostat heating 21/15 C (8-18/otherwise)
shading set point 200 W/m2
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Federation of European Heating, Ventilation and Air-conditioning Associations
Conversion to primary energy
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Federation of European Heating, Ventilation and Air-conditioning Associations
Stockholm cooling load, low-
e glazing, orientation: south
no shading
exterior shading
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Reduction in primary energy
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Federation of European Heating, Ventilation and Air-conditioning Associations
std. double
low-e
solar ctrl
Reduction in primary energy
use for heating, cooling and
lighting through shading
C t b fit l i f l
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Federation of European Heating, Ventilation and Air-conditioning Associations
Cost benefit analysis of solar
shading
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Federation of European Heating, Ventilation and Air-conditioning Associations
Central Plaza Brussels
Photo: Hunter Douglas
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Federation of European Heating, Ventilation and Air-conditioning Associations
Appendices
EU standards concerning shuttersand blinds
Specification example
Matrix of responsibilities
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Federation of European Heating, Ventilation and Air-conditioning Associations
Acknowledgements
Ellen Kohl (Warema), Maaike Berckmoes (Scheldebouw-Permasteelisa),
Risto Kosonen (Halton),
Bernard Gilmont (European Aluminium Association), Maija Virta (Halton),
Prof. Dirk Saelens (Catholic University of Leuven,
Belgium
Prof. Zoltan Magyar (University of Pcs, Hungary)
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