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Research Papers
Daylight for Health and Efficiency - A new career for an old friend
by Dr. Ahmet E. Çakır

Daylight, rather a fact than a matter of discussion for many millennia, has lost its dominant role in architecture during the years 1950 till 1965. The artificial lighting of interiors had reached its long promised goal and was considered superior to daylighting in quality. In many countries, office...

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Design Guidelines for Glare-free Daylit Work Environments
by Werner Osterhaus, Aarhus School of Engineering, DK

A strong focus on lighting quality and productivity as well as a renewed interest in energy efficiency in recent years has highlighted the lack of appropriate design guidance for architects, interior and lighting designers for creating glare-free daylit work environments, especially for offices. Wel...

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Circadian Effects of Daylighting in a Residential Environment
by Sharon J. Gochenour and Marilyne Andersen, Massachusetts Institue of Technology (MIT), USA

This paper examines the effects of housing design upon the amount of natural light available for cuing of the human circadian system. It further assesses whether the conditions present in historic Boston row houses, when considered in the context of human moving around, can be adapted to provide suf...

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Climate-Based Daylight Analysis for Residential Buildings
Impact of various window configurations, external obstructions, orientations and location on useful daylight illuminance

by Dr. John Mardaljevic, De Montfort University, UK Abstract A parametric climate-based analysis for two residential building types with various window configurations and external obstructions. Each of the ten building configurations was evaluated for all combinations of eight orientation...

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Assessment of daylight quality in simple rooms
Impact of three window configurations on daylight conditions, Phase 2

Abstract The present report documents the results of a study on daylight conditions in simple rooms of residential buildings. The overall objective of the study was to develop a basis for a method for the assessment of daylight quality in a room with simple geometry and window configurati...

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We are all outdoor animals
Nick Baker

The Martin Centre for Architectural and Urban Studies University of Cambridge 6 Chaucer Rd Cambridge CB1 2EB Abstract Although we spend most of our time indoors, we are really outdoor animals. The forces, which have selected the genes of contemporary man are found outdoors in the plains...		+ Go there


Lightzone(s): as Concept and Tool
by Merete Madsen, Danish Academy of Fine Arts, School of Architecture, Copenhagen

Abstract Daylight is essential to the experience of an architectural space. Nevertheless, amongst the handful of predominantly scientific methods available to assess daylight in architecture, there are only a few considering the spatial and form-giving characteristics of daylight. This pa...

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Exploring simple Assessment Methods for Lighting Quality with Architecture and Design Students
by Merete Madsen and Werner Osterhaus

Abstract Architecture and design students are frequently required to establish suitable lighting conditions for the buildings and spaces they design as part of their courses. While lighting design guidelines are available, students find out quickly that lighting quality is a complex issue ...

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Examples of Climate-Based Daylight Modelling
by John Mardaljevic, Institute of Energy and Sustainable Development (IESD), De Montfort University, UK

Abstract The daylight factor persists as the dominant evaluation metric because of its simplicity rather than its capacity to describe reality. The daylight factor is insensitive to both the prevailing local climate and building orientation. The drive towards sustainable, low-energy build...

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Time between Light and Dark
Craig Dykers, architect, “Snöhetta”, Norway

Lecture by Craig Dykers, architect, “Snöhetta”, Norway - given at the celebration of the International VELUX Award for Students of Architecture 2004 - “Light of Tomorrow” in Paris on October 1st, 2004 A few weeks ago while I was walking to work, I gazed into the sky and passed my eyes across the ...		+ Go there


Taking daylight modelling out of the dark ages
New daylight modelling techniques

A look at three new daylight modelling techniques developped at the Institute of Energy and Sustainable Development, De Montfort University, Leicester, UK. Those new techniques, which have been given the name daylight prediction, solar penetration and solar access aim to change the way daylight is ...

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Solar Protection in Buildings
by Maria Wall and Helena Bülow-Hübe, Lund University

Abstract Buildings with well functionning solar protection can cut the investment cost for cooling and ventilation installations, reduce enrgy use ans create the conditions for good thermal and visual comfort. Since there is a lack of scientifically developped and comparable data availabl...

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A new daylight glare evaluation method
A comparison of the existing glare index and the proposed method and an exploration of daylighting control strategies

Abstract A proper glare protection method is needed to promote visual comfort at workplaces. Only a few formulae have been proposed for discomfort glare of daylight origin, and they are inadequate in real daylight situations. No standard monitoring procedure is available for daylight glar...

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Daylighting in Cambridge libraries: Shifting focus over time
by Ayonna Datta, College of Architecture and Environmental Design, Arizona State University

Abstract This paper aims to explore the various transformations of Cambridge libraries over the ages focusing mainly on the changing role of daylighting in library design. The libraries have been categorised chronologically into four different groups: Medieval libraries, libraries between...

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An energy conservation architectural design tool for warm climate (LTV)
The tool development and testing

The use of design tools in architectural design is common place. Yet, in recent years the need has arisen to provide design tools to assist with evaluating the energy usage of buildings. A number of tools are available for this type of work. Unfortunately, many of these tools are inappropriate for i...

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Does daylight have a future?
Ole Bouman, architect, editor-in-chief of Archis magazine

Article by Ole Bouman, architect, editor-in-chief of Archis magazine, the Netherlands in the “Light of Tomorrow” publication 2005 published in connection with the International VELUX Award 2004 for Students of Architecture. Why concern ourselves about the light of tomorrow when we have plenty of...		+ Go there


Glazing for Daylight
By Gregg D. Ander, FAIA

Windows and fenestration systems have undergone a technological revolution in recent years. Glazing systems are now available that can dramatically cut energy consumption and the associated pollution sources, reduce peak demand, enhance daylighting performance, and improve occupant comfort. But a...		+ Go there


Passive Cooling

Being inside a house without air conditioning on a warm day can be uncomfortable unless the house's design includes features that facilitate passive cooling. This type of house, which uses passive cooling techniques, can remain comfortably cool on hot summer days without adding to the electric bill....		+ Go there



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