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Latest Articles

Exploring the Impact of Natural Light Exposure on Sleep of Healthy Older Adults: A Field Study

Mariëlle P. J. Aarts, Janny C. Stapel, Toine A. M. C. Schoutens, Joost van Hoof

Research Article Studies among people with dementia demonstrated that the sleep quality and rhythm improves significantly when people are exposed to ambient bright light. Since almost half of the healthy older people also indicate to suffer from chronic sleep disorders, the question arises whether ambient bright light can be beneficial to healthy older people. Particularly the effect on sleep/wake rhythm in relati ...

Published on 04 May 2018
http://dx.doi.org/10.15627/jd.2018.2

Effect of window glazing on colour quality of transmitted daylight

Rajendra Dangol, Thijs Kruisselbrink, Alexander Rosemann

Research Article In this study, the colour quality of the daylight transmitted through different window glazing types is evaluated. The analysis considered four different types of window glazing: laminated, monolithic, coated and applied film glazing ranging in luminous transmittance from around 0.97 to <1. The spectral transmittance data of different window glazing types are taken from the International Glazing D ...

Published on 09 November 2017
http://dx.doi.org/10.15627/jd.2017.6

Solar shading in low energy office buildings - design strategy and user perception

Steinar Grynning, Nicola Lolli, Solvår Wågø, Birgit Risholt

Research Article Moving towards passive house-level envelopes, zero-energy buildings, or zero-emission buildings, where the carbon footprints of the buildings are minimal, the performance of the transparent parts of the envelope is vital for ensuring a low energy demand and a desirable indoor environment. Previous studies explored and confirmed that the energy performance of buildings is highly dependent on the de ...

Published on 02 February 2017
http://dx.doi.org/10.15627/jd.2017.1

Solar Energy Gain and Space-Heating Energy Supply Analyses for Solid-Wall Dwelling Retrofitted with the Experimentally Achievable U-value of Novel Triple Vacuum Glazing

Saim Memon, Philip C Eames

Research Article A considerable effort is devoted to devising retrofit solutions for reducing space-heating energy in the domestic sector. Existing UK solid-wall dwellings, which have both heritage values and historic fabric, are being improved but yet they tend to have meagre thermal performance, partly, due to the heat-loss through glazings. This paper takes comparative analyses approach to envisage space-heatin ...

Published on 07 February 2017
http://dx.doi.org//10.15627/jd.2017.2

Journal of Daylighting

Journal of Daylighting is an international journal devoted to investigations of daylighting in buildings. It is the leading journal that publishes original research on all aspects of daylighting. The aim is to present cutting edge research aimed at reducing the electric lighting energy use in buildings and improving indoor environment.

ISSN: 2383-8701
Frequency: Bi-annual issues (articles published continuously throughout the year)
Year started: 2014

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Research Articles

Appraisal of the visual environment in an industrial factory: a case study in subtropical climates

Kieu Pham, Veronica Garcia-Hansen, Gillian Isoardic

Research Article The physiological and psychological benefits of daylighting for office occupants have been well explored. Current research usually focuses on visual comfort in office buildings. However, there is limited knowledge about daylight quality in industrial work environments. In Australia, most industrial buildings are built from standard factory structures that employ daylight from skylights and large d ...

Published on 10 September 2016
http://dx.doi.org/10.15627/jd.2016.4

Development of Fresnel-based Concentrated Photovoltaic (CPV) System with Uniform Irradiance

Irfan Ullah

Research Article Different designs have been presented to achieve high concentration and uniformity for the concentrated photovoltaic (CPV) system. Most of the designs have issues of low efficiency in terms of irradiance uniformity. To this end, we present a design methodology to increase irradiance uniformity over solar cell. The system consists of an eight-fold Fresnel lens as a primary optical element (POE) and ...

Published on 22 December 2014
http://dx.doi.org/10.15627/jd.2014.1

A Methodology to Link the Internal Heat Gains from Lighting to the Global Consumption for the Energy Certification of Buildings in Italy

Valerio R.M. Lo Verso, Guglielmina Mutani, Laura Blaso

Research Article This paper critically discusses the procedure prescribed by the Italian Technical Standards to account for the internal gains in the calculation of the energy performance indices for a building. This procedure is based on a tabular value set depending on the building usage only (e.g., 6 W/m2 for office buildings), independently of the site and of the controls for blinds and lighting systems. Inste ...

Published on 22 December 2014
http://dx.doi.org/10.15627/jd.2014.6