Environmental assessment of an integrated adaptive system for the improvement of indoor visual comfort of existing buildings

Michael, Aimilios; Gregoriou, Styliana; Kalogirou, Soteris A.

doi:10.1016/j.renene.2017.07.079

Cited by 44 publications

(25 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is a growing body of research in the field of visual comfort. This can range from improvement in visual comfort (i.e., Michael et al 2018) to optimization of it in relation to other parameters (i.e., Vassiliades et al 2018), as well as assessment (i.e., Kent et al 2019a), evaluation (i.e., Kent et al 2019b), or prediction of visual comfort (i.e., Jakubiec et al 2015). A wide range of methods are applied in this field, such as qualitative, quantitative and mixed methods.…”

Section: Introductionmentioning

confidence: 99%

The use of lighting simulation in the evidence-based design process: A case study approach using visual comfort analysis in offices

2019

View full text Add to dashboard Cite

The EBD-SIM (evidence-based design, simulation) framework is a conceptual framework developed to integrate the use of lighting simulation in the EBD process to provide a holistic performance evaluation method. A real-time case study, executed in a fully operational office building, is used to demonstrate the framework's performance. The case study focused on visual comfort analysis. The objective is to demonstrate the applicability of the developed EBD-SIM framework using correlations between current visual comfort metrics and actual human perception as evaluation criteria. The data were collected via simulation for visual comfort analysis and via questionnaires for instantaneous and annual visual comfort perception. The study showed that for user perception, the most crucial factor for visual comfort is the amount of light on a task area, and simple metrics such as Eh-room and Eh-task had a higher correlation with perceived visual comfort than complex performance metrics such as Daylight Autonomy (DA). To improve the design process, the study suggests that, among other things, post-occupancy evaluations (POEs) should be conducted more frequently to obtain better insight into user perception of daylight and subsequently use new evidence to further improve the design of the EBD-SIM model.

show abstract

Section: Introductionmentioning

confidence: 99%

The use of lighting simulation in the evidence-based design process: A case study approach using visual comfort analysis in offices

2019

View full text Add to dashboard Cite

show abstract

“…The desirable daylight factor (daylight ratio, DR) for spaces such as lecture theatres typically is between 2.5 -5 for daylight utilisation, based on Table 3. The formula for calculating daylight factor (DF) [22] is:   Where DI represents indoor illumination, and DO is the outdoor illumination, and 100 is a constant. The DF of 5 is ideal for paperwork and total daylight autonomy, a scenario in lecture halls.…”

Section: A Daylight Factor (Daylight Ratio)mentioning

confidence: 99%

Daylighting Performance Assessment of Side-Lit University Lecture Theatres in the Hot-Humid Climate of Makurdi in Nigeria

Ayoosu*,

Lim,

Leng

2020

IJRTE

View full text Add to dashboard Cite

Daylighting is required to enhance visual comfort; whereas its illumination provides renewable functional interior lighting for specific programmes. Hence, this study examines the levels of daylight illumination for teaching and learning in two lecture theatres each located at the Federal University of Agriculture Makurdi (UAM) and Benue State University Makurdi (BSU) in Makurdi, Nigeria. The two buildings selected for the daylighting performance employed post-occupancy evaluation approach. A digital camera was employed to take photographs, whereas digital light meters were employed to evaluate the levels of illumination on the work plane. The results showed that 80% of the study space has inadequate indoor daylight illumination quantity and distribution as well as poor daylight ratios of 1.1and 0.9 for UAM lecture theatre and BSU lecture theatre, respectively Hence, the lighting conditions in the selected buildings fall short of the international lighting benchmarks (IESNA). Therefore, a pragmatic daylight design strategy is required to enhance daylight levels in the lecture theatres for energy-saving and visual comfort as well as onwards design and fusion in the national building code.

show abstract

“…It was ordered from U.S.A Department of Energy (DOE) and developed at the Lawrence Berkeley National Laboratory (LBNL). This program has been verified through numerous studies, and the program makes it possible to simulate a wide range of visual environments [26][27][28][29][30]. In addition, it is possible to calculate illuminance of space using illuminance sensors, then compare its results from those of predicted equation.…”

Section: Selection For Verification Program (Desktop Radiance)mentioning

confidence: 99%

“…The modified formula was then used to compare the indoor illuminance prediction values for CIE overcast sky and CIE clear sky with the Desktop Radiance [26][27][28][29][30] simulation results for verification. The daylight factor (DF), a ratio of indoor illuminance to overall sky luminance, was also divided into its sky component (SC) and internally reflected component (IRC) for comparison of CIE overcast sky conditions.…”

Section: Of 37mentioning

confidence: 99%

Development of Sky Luminance and Daylight Illuminance Prediction Methods for Lighting Energy Saving in Office Buildings

Kim

2019

Energies

View full text Add to dashboard Cite

Accurately predicting indoor illuminance from daylight during the early stages of building design is an important factor in saving energy and the costs associated with lighting. The objective of this study was to predict sky luminance distribution using the Commission Internationale de l’éclairage (CIE) standard sky model, and propose a method that can be used to predict indoor illuminance. Results obtained from the proposed prediction method were compared and verified with simulation values obtained by Desktop Radiance. From the CIE overcast sky, the zenith/horizon ratio was 3:1. From the CIE clear sky, the luminance value was highest around the sun. In contrast, the luminance value was lowest in the opposite direction of the sun when the angle between the sun and sky elements was 90°. In addition, this study suggested an indoor illuminance prediction method by applying the effects of sky luminance, direct sunlight, and wall reflection elements. When the proposed equation’s calculation results were compared with Desktop Radiance simulation’s value in overcast and clear sky, all statistically analysis (R2, MBE, Cv(RMSE), t-value, p-value) satisfied each standard and showed high correlations. Consequently, it was established that the predicted indoor illuminance obtained from the proposed prediction method was accurate and can be used to predict the level of indoor illuminance. The results further revealed that it is possible to calculate indoor illuminance when installing blinds, by substituting variable values of visible light transmittance (VLT).

show abstract

Environmental assessment of an integrated adaptive system for the improvement of indoor visual comfort of existing buildings

Cited by 44 publications

References 20 publications

The use of lighting simulation in the evidence-based design process: A case study approach using visual comfort analysis in offices

The use of lighting simulation in the evidence-based design process: A case study approach using visual comfort analysis in offices

Daylighting Performance Assessment of Side-Lit University Lecture Theatres in the Hot-Humid Climate of Makurdi in Nigeria

Development of Sky Luminance and Daylight Illuminance Prediction Methods for Lighting Energy Saving in Office Buildings

Contact Info

Product

Resources

About