Khóa đào tạo sẽ cung cấp kiến thức tổng quan về thiết kế tận dụng chiếu sáng tự nhiên cũng như ứng dụng công cụ mô phỏng trong phân tích và tính toán. Nếu được thiết kế hợp lý, chiếu sáng tự nhiên có thể giúp tiết kiệm đáng kể năng lượng tiêu thụ bằng cách giảm năng lượng dùng cho chiếu sáng nhân tạo và ánh sáng đèn. Ngoài ra, ánh sáng tự nhiên còn giúp cải thiện sức khỏe và nâng cao năng suất làm việc của con người bên trong công trình bằng cách kết nối họ với điều kiện tự nhiên bên ngoài.

1. Daylighting Design & Simulation
Contact:
MEng Le Luong Vang
LEED AP, LOTUS AP, GBS EXPERT,
Le.vang@rhdhv.com – 090 838 5689
Website: www.royalhaskoningdhv.com

2. 29 August 2020
Integrated Sustainable Design
Heineken Da Nang Hanuman Cambodia ECCO Bau Bang
Heineken Vung Tau UPPC Paper Philippines Pepsico Binh Duong
FM Logistic Warehouse Bac Ninh Heineken Tien Giang Huu Nghi Cake Factory Bibica Cake Factory
CONTACT US:
MEng LE LUONG VANG
LEED AP, LOTUS AP, GBS EXPERT,
Le.vang@rhdhv.com – 090 838 5689
Website: www.royalhaskoningdhv.com
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3. 29 August 2020
Integrated Sustainable Design
Site assessment Solar, Wind, Orientation Building Envelope MEP Optimization Occupant Comfort Energy Consumption
CONCEPT BASIC DETAILSCHEMATIC
Solar Radiation Exterior Wind
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1. What is daylight?
Definition:
Combination of all direct and indirect
sunlight during daytime
Advantage:
▪ Reduce use of artificial lighting =>
reduce energy use
▪ Natural light => enhance wellbeing and
productivity
Disadvantage:
▪ Solar heat gain => increase cooling
demand => increase energy use
▪ Direct sunlight and Glare =>
uncomfortable

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1. What is daylight?

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▪ Region: for TROPICAL climate => Should use shading!
▪ Site: sky exposure angle, obstructions
▪ Orientation: maximize Southern exposure, optimize Northern
exposure and minimize Eastern & Western exposure
▪ Building form: maximize perimeter to daylight
▪ Glazing ration: larger window area => more daylighting and
more heat gain. Size windows according to use and
orientation: keep reasonable minimum
▪ Glazing specification: triple glazing, tinted or reflective glass
can result in reduced daylight levels
▪ Window height and location: place windows high in the wall
of each floor => daylight to penetrate deeply into the interior
▪ Think about using light shelves, clerestories and using
properly skylights for daylighting with solar controls (size &
orientation)
2. Design Strategies

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2. Design Strategies
* Source of pictures: Archdaily.com
Skylight Sheds Lanterns
Domes Atriums Solar tubes

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2. Design Strategies
* Source of pictures: Archdaily.com
Tauranga Hospital, New Zealand

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2. Design Strategies
?

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* Source of pictures: Australian Embassy, Jakarta
2. Design Strategies
vs

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3. Daylight Simulation
Use for:
▪ Compare different design options
▪ Verify proposed design will provide adequate daylight
▪ Predict sources of glare, contrast ratios or balance of daylight
▪ Indicate potential energy savings from electric lighting use
▪ Document daylighting code compliance
Simulation programs:
Radiance, Daysim, Desktop Radiance, IES-VE, Design Builder,
Dialux, Relux, Ecotect, Velux, Lightcalc, etc.,
Accuracy:
“10% deviation between real-life and simulation”
▪ Calculation method
▪ Sky model
▪ Building model
▪ Surface properties
▪ User expertise
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* INSA Lyon 2016

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3. Daylight Simulation
Accuracy:
▪ Calculation method
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Split flux formula Radiosity Ray tracing Photon mapping
Ecotec Relux, Dialux, Lightcalc Radiance
(Daysim, IES-VE, Design builder,
etc.,)
Not appropriate for daylighting
simulation (diffuse surface,
description of sky)
Velux Daylight Visualizer
* Source of pictures: Danish building research institute, Aalborg university

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3. Daylight Simulation
Accuracy:
▪ Sky model
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* Source of pictures: http://andrewmarsh.com/
CIE (Commission internal de l’éclairage) has defined 15 normalized skies
for use in lighting simulation. An additional 16th type is an older sky model
based on a much simpler mathematical model for overcast skies

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3. Daylight Simulation
Accuracy:
▪ Building model: geometry, external obstruction, etc.,
▪ Surface properties: material type, reflectance and
transmittance values
▪ User expertise: So important!
Information and references:
▪ IES – Illuminating Engineering Society www.iesna.org
▪ CIE – International Commission on Illumination www.cie.co.at
▪ Radiance www.radiance-online.org
▪ Etc.,
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* Source of pictures: Danish building research institute, Aalborg university

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3. Daylight Simulation
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LEED
LOTUS

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Project: FM Logistic & Heineken projects
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4. Project references

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Project: Library (not by HaskoningDHV)
4. Project references
* Reference: Hurley Palmer Flatt

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linkedin.com/company/royal-haskoningdhv
@RHDHV
facebook.com/RoyalHaskoningDHV
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THANK YOU
Q&A
◼ Contact:
◼ MEng Le Luong Vang
◼ LEED AP, LOTUS AP, GBS EXPERT,
◼ Le.vang@rhdhv.com – 090 838 5689
◼ Website: www.royalhaskoningdhv.com