PASSIVE SOLAR DESIGN and
ENERGY EFFICIENCY In Buildings
By:
Professor Emeritus Dato’ Ar. Dr. Elias @ Ilias Salleh Solar Energy Research Institute Universiti Kebangsaan Malaysia
16 October 2013
QAST 2013 Conference Dinner Talk
THE MESSAGE
“ ENERGY EFFICIENCY IN BUILDINGS
SHOULD START WITH
EXPLOITING ALL PASSIVE SOLAR DESIGN POSSIBILITIES
AT THE DESIGN STAGE “
GREEN BUILDING INITIATIVES IN MALAYSIA
GREEN PASS – CIDB PENARAFAN HIJAU (pH JKR) - JKR GREEN RE - REHDA PASSIVE HOUSE (PASSIVHAUS) ?
GBI
MALAYSIA GREEN BUILDING CONFEDERATION
ENERGY EFFICIENCY IN GBI SYSTEM: GBI POINTS ALLOCATION
CRITERIA
RESIDENTIAL
NON RESIDENTIAL
EE ENERGY EFFICIENCY 23 35
EQ ENVIRONMENTAL QUALITY 12 21
SM SITE & MANAGEMENT 33 16
MR MATERIAL & RESOURCE 12 11
WE WATER EFFICIENCY 12 10
IN INNOVATION 8 7
BEI - BUILDING ENERGY INDEX
MS 1525:2007 - CONTENTS Clause 0 Introduction 1 Scope 2 Referenced Documents 3 Definitions 4 Architectural and Passive Design Strategy 5 Building Envelope 6 Lighting 7 Electric Power and Distribution 8 Air-Conditioning and Mechanical Ventilation System 9 Energy Management Control System 10 Building Energy Simulation Method
MS 1525:2007 (revised 2013) 4.2 Passive Design Strategy The basic approach towards good passive design is to orientate, to shade, to insulate, to ventilate and to daylit buildings. (efficiently ?)
PASSIVE SOLAR DESIGN Passive solar design is design that takes advantage of natural climate and energy to maintain indoor environmental comfort
Components
• Locality • Climate • Environmental Comfort
• Daylighting • Passive Cooling • Passive Heating
Bioclimatic Design Passive Solar Systems +
PASSIVE SOLAR DESIGN Basic strategies
• ORIENTATION • SHADING • INSULATION • VENTILATION • Passive Solar Systems
ORIENTATION WHERE IS THE SUN ?
ALT = ALTITUDE ANGLE AZI = AZIMUTH ANGLE
KUALA LUMPUR
NEW YORK
SYDNEY
WHERE IS THE WIND ?
Solar Chart superimposed by Shadow Angle Protractor
SHADING
WHAT ANGLES ?
VSA VERTICAL SHADOW ANGLE
HSA
HORIZONTAL SHADOW ANGLE
Model 1 Model 2 Model 3
SOLAR GAIN REDUCTION THROUGH SHADING
INSULATION
WHAT R-Value ? WHAT U-Value ? WHAT E-Value ?
R-value is just a measure of heat transfer by conduction
Surface Emittance ChartBlack Body, 1
Emittance of Aluminum Paint, 0.5
Emittance of Common Building Materials, 0.9
Emittance of an Aluminum Coating, 0.22
< 0.1 = Radiant Barrier, 0.1
Foil Radiant Barrier, 0.030
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0 = No Radiation and 1 = Black Body or Maximum Radiant Heat Transfer
Em
ittan
ce 0
to 1
.0
VENTILATION
WHAT AIR CHANGE RATE ? WHAT AIR VELOCITY ?
LANCHESTER LIBRARY, COVENTRY
Passive Solar System
DAYLIGHTING SIDE WINDOWS, HIGH WINDOWS, PIPED DAYLIGHT
GREENHOUSE SPACE HEATING
NIGHT VENTILATION STRUCTURAL COOLING, ROOF POND
“ ENERGY EFFICIENCY IN BUILDINGS
SHOULD START WITH EXPLOITING ALL PASSIVE SOLAR DESIGN POSSIBILITIES
AT THE DESIGN STAGE “
(Use of Simulation Techniques)
TROPICAL PASSIVHAUS ?
THANK YOU !
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