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BS EN 14501:2021

BS EN 14501:2021

$189.07

Blinds and shutters. Thermal and visual comfort. Performance characteristics and classification

Published By Publication Date Number of Pages
BSI 2021 48
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This document applies to the whole range of shutters, awnings and blinds defined in EN 12216, described as solar protection devices in this document. It specifies the corresponding properties and classifications: – relating to thermal comfort: – the solar factor (total solar energy transmittance); – the secondary heat transfer factor; – the direct solar transmittance; – relating to visual comfort: – the darkening performance; – the night privacy; – the visual contact with the outside; – the glare control; – the daylight utilization; – the rendering of colours. NOTE For other purposes, more detailed methods using different parameters can be used. Some of the characteristics (e.g. gtot) are not applicable when solar protection devices are not parallel to the glazing (e.g. folding-arm awnings). This document is not applicable to the solar protection devices using fluorescent materials.

PDF Catalog

PDF Pages PDF Title
2 undefined
8 1 Scope
2 Normative references
9 3 Terms, definitions and symbols
11 4 Notations used
4.1 General
4.2 Visual or solar properties
12 4.3 Geometry of the radiation
13 4.4 Optical factors
5 Thermal comfort
5.1 General
5.2 Control of solar gains – Total solar energy transmittance gtot
5.2.1 General
14 5.2.2 Determination of gtot – Simplified method
5.2.3 Determination of gtot – Detailed method
15 5.2.4 Performance classes
5.3 Secondary heat gains – Secondary heat transfer factor qi, tot
5.3.1 General
5.3.2 Determination of qi, tot – Simplified method
16 5.3.3 Determination of qi, tot – Detailed method
5.3.4 Performance classes
5.4 Protection from direct transmission – Normal/normal solar transmittance τe, n-n
5.4.1 General
5.4.2 Determination
5.4.3 Performance classes
6 Visual comfort
6.1 General
18 6.2 Darkening performance
6.2.1 General
6.2.2 Determination
6.2.3 Performance classes
19 6.3 Glare control
6.3.1 General
20 6.3.2 Determination
6.3.3 Performance classes
21 6.4 Night privacy
6.4.1 General
6.4.2 Determination
6.4.3 Performance classes
22 6.5 Visual contact with the outside
6.5.1 General
6.5.2 Determination
6.5.3 Performance classes
23 6.6 Daylight utilization
6.6.1 General
6.6.2 Determination
6.6.3 Performance classes
6.7 Rendering of colours
6.7.1 Solar protection device without glazing
6.7.2 Solar protection device with glazing
24 Annex A (normative)Reference glazing
A.1 General
A.2 Reference glazing with integrated data only
A.2.1 Glazing A
A.2.2 Glazing B
25 A.2.3 Glazing C
26 A.2.4 Glazing D
A.2.5 Glazing E
27 A.3 Reference glazing with spectral data
A.3.1 General
A.3.2 Glazing F
28 A.3.3 Glazing G
A.3.4 Glazing H
A.3.5 Spectral data for the panes
A.3.5.1 Pane 1: clear single pane (4 mm)
30 A.3.5.2 Pane 2: pane with low emissivity coating (4 mm)
32 A.3.5.3 Pane 3: solar control pane (6 mm)
35 Annex B (informative)The meaning of the secondary internal heat transfer factor qi, tot
36 Annex C (informative)Example of performance presentation
C.1 Thermal comfort
C.2 Visual comfort
38 Annex D (informative)Daylight Glare Probability
D.1 General
D.2 Glare
D.3 Daylight Glare Probability
D.3.1 General
39 D.3.2 Annual evaluation
40 D.3.3 Simplified annual glare evaluation
D.3.3.1 General
41 D.3.3.2 Solar protection device being opaque in the extended and closed position
42 D.3.3.3 Solar protection device where the curtain is made of textile, film or perforated opaque material
44 D.3.3.4 Sunshine zones
46 Annex E (normative)Opacity performance of curtain material

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BS EN 14501:2021
$189.07