Energy saving by using rolling shutters, reflective layer and edge seals and the effect of the window sill

Energy saving by using rolling shutters, reflective layer and edge seals and the effect of the window sill

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Commission of the European Communities
energy
ENERGY SAVING BY USING ROLLING SHUTTERS,
REFLECTIVE LAYER AND EDGE SEALS
AND THE EFFECT OD THE WINDOW SILL
Report
UR 9225 EN
Blow-up from microfiche original Commission of the European Communities
energy
ENERGY SAVING BY USING ROLLING SHUTTERS,
REFLECTIVE LAYER AND EDGE SEALS
AND THE EFFECT OD THE WINDOW SILL
M.DUBBLED
TNO
Research Institute
for Environmental hygiene
P.O. Box 214
2600 AE DELFT
Contract No. EE-A-2-019-NL
SUMMARY AND FINAL REPORT
Directorate-General for Science, Research and Development
1984 EUR 9225 EN Published by the
COMMISSION OF THE EUROPEAN COMMUNITIES
Directorate­General
Information Market and Innovation
Bâtiment Jean Monnet
LUXEMBOURG
LEGAL NOTICE
Neither the Commission of the European Communities norany person acting on behalf
of the n is responsible for the use which might be made of the following
information
ι ECSC — EEC — EAEC, Brussels · Luxembourg, 1984 III
FINAL AND SUMMARY REPORT
ENERGY SAVING BY USING ROLLING SHUTTERS, REFLECTIVE LAYER AND
EDGE SEALS AND THE EFFECT OF THE WINDOW SILL.
SUMMARY
The possible energy saving when using roller shutters, interfering
convective layers and reflective layers on the parapet and on the
back side of radiators is investigated.
The occupants' acceptance of and their attitude towards the use
of roller shutters are reported.
The U value measurements show a possible reduction of the heat
losses up to 50 Ζ when two layered shutters and reflective mate­
rials are used. A reflective layer on both sides appears to be
the most effective to reduce the heat losses.
A cost-benefits balance shows that for single glass and a normal
rolling shutter a Pay Back Period of four years can be expected.
For the other combinations possible investments are calculated.
Obstruction of the convection along the window does not save
energy.
The Pay Back Period for reflective layers on the parapet or on
the back side of the radiator is less than four years.
This research has been supported financially by the European
Committee and the Dutch Ministry of Housing and Physical Planning.
C 539 CONTENTS
Page
, 1. HINTS TO THE READER VTII
2. SUMMARY REPORT 1
2.1 Objectives
2.2 Methods used
2.3 Combinations investigated 2
2.4 Conclusions 4
2.4.1 Acceptance of rolling shutters
2.4.2 Insulation and climatic effects of rolling
..; shutters 5
2.4.3 Insulation and climatic effect of reflecting
i material· on the parapet and obstruction of
ig the convection 8
2.4.4 Reference U values
2.4.5 Energy saving calculation 9
2.4.6 Cost-benefit analyses for rolling,shutters 12
2.4.7t analysis with reflective material
on the parapet 17
2.4.8 Possible integration in existing buildings 18
3. OBJECTIVES 21
A. INTRODUCTION2
ι)
5. ACCEPTANCE OF ROLLING SHUTTERS BY OCCUPANTS 23
5.1 Introduction
5.2 Overall conclusions 24
C 539 VI
CONTENTS (continue)
Page
6. INSULATION AND CLIMATE EFFECT OF ROLLING SHUTTERS 24
6.1 Summary 25
7. INSULATION AND CLIMATIC EFFECT OF REFLECTIVE MATERIAL ON
THE PARAPET AND OBSTRUCTION OF THE CONVECTION 27
7.1 Summary
7.2 Conclusions8
8. REFERENCE U VALUES 29
8.1 Comparison with measured values
8.2 Conclusions 30
8.3 Comparison with calculated U values 3
9. ENERGY SAVING CALCULATIONS3
9.1 Introdution
9.2 Correction for the mean U value 3
9.3 Calculation of energy consumption8
9.4 Comparison with other results 41
9.5 Energy saving 43
10. COST-BENEFIT ANALYSIS FOR ROLLING SHUTTERS5
10.1 Introduction
10.2 Cost-benefit analysis6
10.3 Starting-points for the calculations 4
10.4 Results 47
10.5 Conclusions8
10.6 General limits for energy saving investments 52
C 539 VII
CONTENTS (continue)
11. COST-BENEFIT ANALYSIS FOR REFLECTIVE MATERIAL ON THE PARAPET 56
12 POSSIBLE INTEGRATION IN EXISTING BUILDINGS 58
12.1 Introduction 5
12.2 Conclusions
13. CONCLUSIONS 60
14. SYMBOLS1
15. REFERENCES2
C 539
IMG-TNO/Afd. GLB
November 1983
MD/wv VIII
1. HINTS TO THE READER
The reader who wants to have a quick view of the contents may
confine himself to the yellow paged summary report.
The different investigations are discussed further in the
separate chapters. In some cases these investigations may be
considered as separate units. These are reported as such.
In each chapter the investigation is summarized and conclusions
are given. For further details we refer to the relating partial
reports which are parts of the final report.
The reader who is only interested in a special part needs only
read the related chapter or partial report.
The following conversions are used:
1 ECU =2.6 Dfl
1 m3 gas ■ 35 MJ
C 539