Lighting of Office Buildings New Approach to Natural and Artificial Lighting

1997 ◽  
Keyword(s):  
Office Buildings ◽  
New Approach ◽  
Artificial Lighting

Lighting energy performance determination in office environments through implementation of EN 15193-1 for Turkey

2021 ◽  
pp. 147715352098742
Author(s):  
FŞ Yilmaz
Keyword(s):  
System Design ◽  
Architectural Design ◽  
Office Buildings ◽  
Energy Requirements ◽  
System Control ◽  
Lighting System ◽  
Artificial Lighting ◽  
Design Alternatives ◽  
Lighting Energy ◽  
The Impact

Office buildings are building typologies where efficient and optimal use of lighting energy is crucial while providing comfortable visual environments. The purpose of this study is to explore the impact of diverse architectural design alternatives on lighting energy requirements and lighting energy saving possibilities through a case study. In this study, a total of 3888 design alternatives are investigated in a comparative way in terms of daylighting system design alternatives, artificial lighting system design scenarios, artificial lighting system control types and shading system control options. Introducing the adaptation process of the EN 15193-1:2017 standard for Turkey’s specific climatic and geographical conditions and considering diverse lighting design scenarios, results of this parametric study aim to underline the significance of architectural design strategies in office buildings for the reduction of lighting energy requirements.

scholarly journals Control Strategies for Daylight and Artificial Lighting in Office Buildings—A Bibliometrically Assisted Review

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3852
Author(s):  
Daniel Plörer ◽  
Sascha Hammes ◽  
Martin Hauer ◽  
Vincent van Karsbergen ◽  
Rainer Pfluger
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Control Strategies ◽  
Significant Proportion ◽  
Decisive Role ◽  
Future Trend ◽  
Office Buildings ◽  
Total Energy Consumption ◽  
Integral Control ◽  
Artificial Lighting

A significant proportion of the total energy consumption in office buildings is attributable to lighting. Enhancements in energy efficiency are currently achieved through strategies to reduce artificial lighting by intelligent daylight utilization. Control strategies in the field of daylighting and artificial lighting are mostly rule-based and focus either on comfort aspects or energy objectives. This paper aims to provide an overview of published scientific literature on enhanced control strategies, in which new control approaches are critically analysed regarding the fulfilment of energy efficiency targets and comfort criteria simultaneously. For this purpose, subject-specific review articles from the period between 2015 and 2020 and their research sources from as far back as 1978 are analysed. Results show clearly that building controls increasingly need to address multiple trades to achieve a maximum improvement in user comfort and energy efficiency. User acceptance can be highlighted as a decisive factor in achieving targeted system efficiencies, which are highly determined by the ability of active user interaction in the automatic control system. The future trend is moving towards decentralized control concepts including appropriate occupancy detection and space zoning. Simulation-based controls and learning systems are identified as appropriate methods that can play a decisive role in reducing building energy demand through integral control concepts.

Horizontal Distribution of Illuminance with Reference to Window Wall Ratio (WWR) in Office Buildings in Hot and Dry Climate, Case of Iran, Tehran

2011 ◽  
Vol 110-116 ◽  
pp. 72-76 ◽  
Author(s):  
Mohammadjavad Mahdavinejad ◽  
Soha Matoor ◽  
Neda Feyzmand ◽  
Amene Doroodgar
Keyword(s):  
Energy Efficiency ◽  
Horizontal Distribution ◽  
Office Buildings ◽  
Computational Simulations ◽  
Artificial Lighting ◽  
Light Dependence ◽  
Models Comparison ◽  
Optimal Window ◽  
Climatic Features

The Issue of daylight inclusion in the office buildings has got the significant importance in the recent years. Using this light, dependence on artificial lighting sources can be reduced which results in the energy efficiency. This study aims to determine the optimal Window Wall Ratios in the office buildings of Tehran to take the advantage of daylight abundance regarding the climatic features without making the designers involved with the complicated calculations. All the research analyses have been done based on the window models comparison through the computational simulations. After the primary analyses, the models were developed and put to the test again. The study shows that among from all the tested models, an optimal WWR range for the office buildings of Tehran can be proposed.

Assessing window area and potential for electricity savings by using daylighting and hybrid ventilation in office buildings in southern Brazil

SIMULATION ◽  
2017 ◽  
Vol 93 (11) ◽  
pp. 935-949 ◽  
Author(s):  
Ricardo Forgiarini Rupp ◽  
Enedir Ghisi
Keyword(s):  
Air Conditioning ◽  
Energy Savings ◽  
Electricity Consumption ◽  
Building Design ◽  
Office Buildings ◽  
Artificial Light ◽  
Southern Brazil ◽  
Artificial Lighting ◽  
Hybrid Ventilation ◽  
Window Area

The aim of this study is to develop a method to assess window area based on electricity consumption in office buildings in southern Brazil. The method may be used in the preliminary building design process in order to help choose an adequate window area to minimize its impact on energy consumption, depending on climate, building size, solar orientation, and mode of operation. The method also considered thermal comfort and daylighting performance. Four cases were investigated: Case 1, building operating with artificial lighting and air-conditioning; Case 2, considering integration of daylight and artificial light with air-conditioning; Case 3, building operating with hybrid ventilation and artificial lighting; and Case 4, considering integration of daylight and artificial light with hybrid ventilation. EnergyPlus and Daysim simulation programs were used to estimate the electricity consumption for each model. The integration of daylighting with artificial light (Case 2) generates more potential for energy savings (PES) than hybrid ventilation (Case 3). Case 4 showed PES ranging from 4.2% to 64.9%, allowing larger window areas with lower consumption, resulting in the highest PES.

scholarly journals Optimal control of artificial lighting and daylighting for office buildings

1995 ◽  
Vol 79 (Appendix) ◽  
pp. 132-133
Author(s):  
Takashi Inoue ◽  
Kayo Uyeda ◽  
Keiichi Yoshimuta ◽  
Ryuji Yanagihara ◽  
Kunihiko Iwabuchi
Keyword(s):  
Optimal Control ◽  
Office Buildings ◽  
Artificial Lighting

scholarly journals Are automated daylight control systems working as they should?

2021 ◽  
Author(s):  
◽  
James Thompson
Keyword(s):  
Control Systems ◽  
Energy Efficient ◽  
Fossil Fuels ◽  
Energy Savings ◽  
Average Energy ◽  
Working Environment ◽  
Office Buildings ◽  
Artificial Lighting ◽  
Systems Research ◽  
Occupant Satisfaction

<p>Lighting in office buildings can account for approximately 30% of electrical use. This provides an opportunity for energy efficient technologies to be implemented to reduce this load. Automated daylight control systems are part of a growing industry, based on complex electronics and careful placing of light sensors. In an economy that is accepting the need for energy reduction due to the realisation of limited fossil fuels, it is important to maintain and enhance energy efficient systems.  Research highlighted that previous studies would either use a physical measuring approach or an occupant survey to understand how well automated daylight control systems are working, but never both. This thesis combined both of these approaches to quantify how much energy automated daylight control systems are saving while ensuring that occupant satisfaction and comfort is maintained. Four office buildings within Wellington city were therefore analysed to investigate the average energy saving from automated daylight control systems. Energy savings reported from other research studies ranged from 15% to 80%, with an average of 49%. The savings from the four buildings researched in this thesis average 20% savings. The surveys further indicated that all occupants within each of the buildings were satisfied with both natural and artificial lighting in their working environment. Glare was however highlighted as an issue.</p>

scholarly journals Energy Optimisation in Office Buildings Through Daylighting Design for Climatic Conditions of Central India

2016 ◽  
Vol 3 (2) ◽  
pp. 133-147
Author(s):  
Komal Thakur ◽  
K.P. Rewatkar
Keyword(s):  
Central India ◽  
Working Hours ◽  
Electrical Energy ◽  
Maximum Energy ◽  
Climatic Conditions ◽  
Office Buildings ◽  
Cooling Load ◽  
Artificial Lighting ◽  
Interior Spaces ◽  
Energy Optimisation

This paper is based on the premise that energy optimisation is possible in office buildings through design of daylighting. The motivation for the study was born of the fact that in India, among all building typologies, commercial buildings consume the maximum energy. This energy consumption is mainly for cooling of the building and lighting the interior spaces. Cooling and lighting up spaces generates heat in and around the building, which again increases the cooling load. Out of the total electrical energy required in the building, around 20-40% is used for lighting purposes. Despite availability of daylight during the working hours, artificial lighting is used in offices that have huge internal spaces with large spans. This paper aims at understanding the factors related to daylight penetration into office building in different situations and developing guidelines for achieving maximum daylight penetration in large spaces.

scholarly journals Enhanced Energy Savings in Indoor Environments with Effective Daylight Utilization and Area Segregation

Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1313
Author(s):  
Mohammad Asif ul Haq ◽  
Aminul Islam ◽  
ASM Shihavuddin ◽  
Md Hasan Maruf ◽  
Ahmed Al Mansur ◽  
...  
Keyword(s):  
Energy Saving ◽  
Energy Savings ◽  
Real Life ◽  
Indoor Environments ◽  
New Approach ◽  
Artificial Lighting ◽  
Energy Saving Potential ◽  
Energy Assessment ◽  
Separate Area ◽  
Multiple Levels

Daylight utilization is one of the key areas for energy savings in indoor environments. An important factor often not considered by the existing daylight utilization approaches is the segregation of the floor into task areas and non-task areas. It is also observed that the inherent asymmetry in the daylight penetration pattern in most indoor environments is not given consideration while designing artificial lighting arrangements. Moreover, daily and annual daylight availability is found to have a symmetrical variation pattern, which is a significant factor often overlooked in utilizing daylight. Thus, the energy assessment can be inaccurate, leading to an incorrect or impractical evaluation of energy savings. This research proposes a comprehensive new approach to assess the energy-saving potential of daylight utilization in indoor environments. This new method combines two approaches to overcome the aforementioned issues. (1) The considered area is segmented into task area and non-task areas (or surrounding area) and considers different levels of required illuminance for each separate area. (2) The variation of available daylight at the considered location is accounted for by dividing the daylight penetration into multiple levels. For the study, the method is first applied to a simulated office space considering real-life parameters, where the annual energy savings were estimated at 83.67%. For further validation, a comparison with a case from an existing method was also carried out, and the proposed method gave an energy saving estimation of 73.45%. This indicates a 10% higher energy saving estimation as compared to the original study, against which the proposed method was compared.

Supplementary Artificial Lighting of Interiors as a Factor to Create a Comfortable Lighting Environment in Working Premises of Office Buildings: A Review

2021 ◽  
pp. 24-27
Author(s):  
Sergei V. Stetsky ◽  
Kira O. Larionova
Keyword(s):  
Field Study ◽  
Structural Design ◽  
Scientific Study ◽  
Office Buildings ◽  
Office Building ◽  
Artificial Lighting ◽  
Scientific Investigations ◽  
Climatic Environment ◽  
Lighting Environment ◽  
Indoor Lighting

The article deals with system of supplementary artificial lighting of working premises in office buildings. It is noted, that for the time being the construction and commission of office building in majority of world’s countries increase, creating jobs for many people, which work as office personal. That’s why the creating of comfortable indoor climatic environment takes a leading part in the process of architectural and structural design of the buildings in question. The comfort of lighting environment is considered as one of main for man among the environmental problems to be solved in these building. As a results of the scientific study presented, the authors studies that the best solution in this case is to incorporated artificial lighting in supplementary form to increase the total level of illumination of working premises where and when it is necessary. The authors noted, that for the scientific investigations of the kind considered, the best method of the field study was an internationally – adopted method of subjective expert appraisal of the indoor lighting environment.

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