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Design and Simulation of a Circadian Lighting Control System Using Fuzzy Logic Controller for LED Lighting Technology

This paper introduces a fuzzy logic-based circadian lighting control system using flexibility of Light-Emitting Diode (LED) lighting technology to synchronise artificial lighting with circadian (natural) lighting Correlated Colour Temperature (CCT) characteristics.

Sivachandran R. Perumal, Faizal Baharum
Research article | 26 May 2022

An Investigation-Based Optimization Framework of Thermal Comfort Analysis in Underground Enclosed Spaces Affected by Multiple Parameters for Energy Performance in Tropics

Optimization becomes more valuable when the optimal variables decision can consider sensitivity analysis. To get optimum results quickly, this study established a synthetic sensitivity analysis and multi-objective optimization approach, which is combined with an energy simulation framework characterized by parallel processing.

Research article | 13 May 2022

A Daylight Assessment on Visual and Nonvisual Effects of Light Shelves: A Human-centered Simulation-based Approach

The contribution of daylight to a comfortable environment for occupants has been the subject of studies for years. Light shelves are known as daylight redirecting systems to enhance indoor daylight conditions. Although several research papers have focused on their daylight performance, there is a lack of studies on the performance of light shelves on circadian rhythm.

Seyedeh Nazli Hosseini, Iman SheikhAnsari
Research article | 14 March 2022

Development of Two-Step Biomimetic Design and Evaluation Framework for Performance-Oriented Design of Multi-Functional Adaptable Building Envelopes

Climate change, increase in CO2 production and energy consumption are major global issues and the building, environmental and construction sector is contributing to the increasing concern day by day. Due to increasing demands to satisfy environmental, social, and economic requirements, designing efficient and sustainable buildings has become increasingly complex.

Salman Oukati Sadegh, Shawul Gulilat Haile, Ziyaolrahman Jamshidzehi
Research article | 26 February 2022

Effect of Roller Shades on Chromaticity and Colour Rendering Performance of Transmitted Daylight

Several studies have focused on the performance of roller shades in terms of glare, outdoor vision, daylight availability and energy performance. Currently, other parameters linked to visual amenity, such as chromaticity and colour rendition, are becoming relevant.

Ayelén Villalba, Erica Correa, Julieta Yamín, Andrea Pattini
Research article | 29 January 2022


Heliostats Daylighting System for Multi-floor Buildings

Daylighting has been considered as a major part of sustainable buildings for saving electric lighting and providing benefits such as, health, visual comfort, and productivity of the occupants. A daylighting system enables the sunlight to capture and deliver it in the interior spaces that cannot be illuminated through windows.

Irfan Ullah
Research article | 26 December 2019

Daylight Distribution Improvement Using Automated Prismatic Louvre

Louvre is a common type of shading devices and has been increasingly used in office buildings. Meanwhile, some reflective types of louvre have been used to provide shade and to redirect daylight deep into buildings interior simultaneously. Furthermore, daylighting systems have been recently engaged with automation control to improve their performance and increase their accuracy.

Ahmad Eltaweel, Mohamed Alaa Mandour, Qinghua Lv, Yuehong Su
Research article | 03 April 2020

Effect of window glazing on colour quality of transmitted daylight

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.

Rajendra Dangol, Thijs Kruisselbrink, Alexander Rosemann
Research article | 09 November 2017

Lighting Energy Saving with Light Pipe in Farm Animal Production

The Swedish animal production sector has potential for saving electric lighting of €4-9 million per year using efficient daylight utilisation. To demonstrate this, two light pipe systems, Velux® (house 1) and Solatube® (house 2), are installed in two identical pig houses to determine if the required light intensity, daylight autonomy (DA), and reduced electricity use for illumination can be achieved. In.

Hans von Wachenfelt, Vaia Vakouli, Alejandro Pacheco Diéguez’, Niko Gentile, Marie-Claude Dubois, Knut-Håkan Jeppsson
Research article | 08 September 2015

The Role of Orosi’s Islamic Geometric Patterns in the Building Façade Design for Improving Occupants’ Daylight Performance

The form of the building facade significantly affects the amount of useful daylight admitted in the interior space. Striking a balance between the visual comforts of occupants and taking advantage of daylight is always a challenge and, therefore, investigating complex, geometric forms of Orosi patterns can be an effective way of improving visual comfort alongside the aesthetic aspects.

Seyedeh Nazli Hosseini, Seyed Morteza Hosseini, Milad HeiraniPour
Research article | 07 November 2020

Simulation of Daylighting Conditions in a Virtual Underground City

From the Piranesi fantastic architectures to the animation movies and video games of the last thirty years, a new design approach has been introduced and developed: the design of the virtual space. Designing the "virtual" means experiencing a multidisciplinary approach where architecture, engineering, and urban planning meet the new horizons of information and communication technology.

Cristiano Merli Alcini, Samuele Schiavoni, and Francesco Asdrubali
Research article | 06 January 2015

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

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.

Irfan Ullah
Research article | 22 December 2014

Experimental Analysis of the Performance of Light Shelves in Different Geometrical Configurations Through the Scale Model Approach

Daylight plays a significant role in achieving energy saving and comfort in buildings. It is in accordance with the human circadian rhythms and allows the best visual conditions in work environments and residential buildings. Recently, numerous researchers have focused their attention on the performance of technological devices able to increase natural light availability in interior areas of buildings.

Paolo Zazzini, Alessandro Romano, Alessio Di Lorenzo, Valeria Portaluri, Alessandro Di Crescenzo
Research article | 03 March 2020

Quantitative Investigation Through Climate-based Daylight Metrics of Visual Comfort Due to Colorful Glass and Orosi Windows in Iranian Architecture

There are several alternatives to passive strategies in the early stages of the design process including orientation, window to wall ratio, shading device, material and colour that affect occupants’ visual comfort. However, applying simple traditional principles such as using colorful glasses for windows are effective in the optimizing of visual comfort at interior space. .

Seyed Morteza Hosseini, Masi Mohammadi, Alexander Rosemann, Torsten Schröder
Research article | 26 August 2018

Automatic vs Manual Control Strategy for Window Blinds and Ceiling Lights: Consequences to Perceived Visual and Thermal Discomfort

A case study to evaluate the occupants' satisfaction in relation to two different control strategies (fully automatic and manual) for blind and ceiling lights use in cell offices was carried on in Trondheim, Norway. A group of 11 participants with varying age, gender, and ethnicity, used two test cells of a laboratory as a workspace primarily carrying out office tasks at a personal computer for a total of 19 calendar days.

Nicola Lolli, Alessandro Nocente, Johannes Brozovsky, Ruth Woods, Steinar Grynning
Research article | 19 November 2019


ISSN: 2383-8701
Frequency: Bi-annual (2 issues/year) (articles published continuously throughout the year)
Year started: 2014
Time to Publication: 70 days
CiteScoreTM 2020: 2.3
SCImago Journal Rank (SJR) 2020: 0.36
Source Normalized Impact per Paper (SNIP) 2020: 0.771


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 solar energy and lighting.

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Energy (miscellaneous): #16/24
Renewable Energy, Sustainability and the Environment: #118/195

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Editorial Board

Dr Arsenio Barbón
University of Oviedo

Associate Editor
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Dr Susana Lagüela López
University of Vigo

Associate Editor
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Prof Hongfei Zheng
Beijing Institute of Technology

Associate Editor
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Dr Fabio Peron
IUAV University of Venice

Associate Editor
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Dr Ferdinando Salata
University of Rome

Associate Editor
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Prof. Önder Güler
Istanbul Technical University

Associate Editor
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Dr Doris Abigail Chi Pool
Universidad de las Américas Puebla

Editorial Board Member
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Dr Petar Pejic
University of Niš

Editorial Board Member
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Dr Seyed Morteza Hosseini
Eindhoven University of technology

Editorial Board Member
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Dr Hui Lv
Hubei University of Technology

Editorial Board Member
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Dr. Francesco Nocera
Department of Civil Engineering and Architecture, University of Catania (ITALY)

Editorial Board Member
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Dr. Peng XUE
Beijing University of Technology

Editorial Board Member
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