The Evaluation of an Office Building According to LEED Certificate Lighting Criteria

2019 ◽  
pp. 41-48
Author(s):  
Idil Bakir Kucukkaya ◽  
Ebru Alakavuk
Keyword(s):  
Natural Resources ◽  
Industrial Revolution ◽  
Energy Savings ◽  
Environmental Design ◽  
Office Building ◽  
Artificial Lighting ◽  
Ecological Balance ◽  
Lighting Energy ◽  
Lighting Systems ◽  
Office Lighting

The progress in industrial and technological areas, which started with the Industrial Revolution, has deteriorated the ecological balance and depleted the natural resources. Sustainability, which initially seemed as a solution within this concept, became an important part of Interior Architecture as in disciplines related to design. The lighting systems of the offices that are the secondary living areas should be evaluated in terms of sustainability as well. In this paper, the energy savings and loss of the artificial office lighting systems has been calculated according to the ASHRAE/IES standard 90.1Ц20078?1 which are included in the Leadership in Energy and Environmental Design (LEED) certificateТs lighting criteria [1]. The wattage of the artificial lighting systems has been calculated while the systems were in use. The results of these measurements have been compared with lighting wattage and thus the lighting energy savings and loss have been configured. The office has been comparatively analyzed according to LEED criteria.

Analysis of Electrical Energy Savings From Daylighting Through Skylights

Solar Energy ◽  
2005 ◽  
Author(s):  
Abdelkarim Nemri ◽  
Moncef Krarti
Keyword(s):  
Energy Use ◽  
Energy Savings ◽  
Simulation Analysis ◽  
Control Strategies ◽  
Electrical Energy ◽  
Office Building ◽  
Analysis Tool ◽  
Energy Saving Potential ◽  
Lighting Energy ◽  
The Impact

This paper provides a simplified analysis tool to assess the energy saving potential of daylighting for commercial buildings through skylights. Specifically, the impact of daylighting is investigated for various fenestration opening sizes, glazing types, control strategies, and geographic locations. A top floor of a prototypical office building has been considered in the analysis. The results obtained for the office building can be applied to other types of buildings such as retails stores, schools, and warehouses. Based on the simulation analysis results, it was determined that skylight to floor ratio more than 0.3 does not affect significantly the lighting energy savings. An optimum value of skylight to floor area ratio was found to be 0.2 to minimize the annual total building energy use.

scholarly journals A review on sensing-based strategies of interior lighting control system and their performance in commercial buildings

2019 ◽  
Vol 16 (1) ◽  
pp. 208 ◽  
Author(s):  
Khairul Rijal Wagiman ◽  
Mohd Noor Abdullah ◽  
Mohammad Yusri Hassan ◽  
Nur Hanis Mohammad Radzi
Keyword(s):  
Energy Savings ◽  
Control Strategies ◽  
Electrical Energy ◽  
Commercial Buildings ◽  
Current Sensing ◽  
Factors Affecting ◽  
Artificial Lighting ◽  
Lighting Control ◽  
Lighting Energy ◽  
Building Characteristics

<p>Artificial lighting consumed significant amount of electrical energy in commercial buildings. Therefore, intelligent control strategies are widely implemented to reduce the lighting energy consumption. This paper presents comprehensive review of the current sensing-based strategies (i.e. occupancy, daylight and mixed), sensors placement methods (i.e. occupancy and light) and factors affecting the performance of the lighting control strategies. Based on literature survey, the sensors placement methods can be categorized into three approaches: fixed, mathematical equation and optimization. The state-of-the-art of these approaches are discusses in details. It found that, the optimization-based approach capable to find the optimal sensor placement (numbers and positions) effectively. Moreover, the mixed strategy can be produced the highest energy savings up to 95% compared with other strategies. The occupancy pattern and building characteristics are the main factors to contribute higher energy savings of sensing-based strategies in commercial buildings.  </p>

scholarly journals The Role of the Internal Heat Gains for Artificial Lighting on the Energy Performance of Buildings

2021 ◽  
Vol 39 (5) ◽  
pp. 1395-1404
Author(s):  
Guglielmina Mutani ◽  
Edoardo De Nicolò ◽  
Laura Blaso ◽  
Simonetta Fumagalli ◽  
Antonella Tundo
Keyword(s):  
Internal Heat ◽  
Energy Performance ◽  
Light Sources ◽  
Retirement Home ◽  
Climate Conditions ◽  
Artificial Lighting ◽  
Performance Indexes ◽  
Lighting Energy ◽  
Lighting Systems ◽  
Shading Devices

This paper aims to propose a procedure for calculating the energy performance indexes of buildings considering the seasonality of internal gains due to artificial lighting with a monthly quasi-steady-state energy balance. The proposed methodology evaluates the heat gains due to the integrated natural-artificial lighting system with the Lighting Energy Numerical Indicator (LENI). For the evaluation of buildings’ global energy performance and for some energy services, this contribution cannot be considered constant annually as depend strongly by climate conditions. The effect of daylighting, type of light sources-luminaires, building orientation and shading devices could influence lighting contribution of the internal heat gains. Then, the proposed methodology evaluates the internal heat gains with monthly energy balances. This methodology was applied to the case study of the "Brancaccio" retirement home in Matera (IT) for which the values of the energy performance indexes were compared with the standard normative approach using constant internal heat gains. The results of this work underline the importance of performing a detailed analysis that considers the availability of natural light in the different months of the year, the efficiency of the different lighting systems and their power installed per unit of area as a function of the lighting comfort requirements in the different types of environments.

scholarly journals The Impact of Modern Artificial Lighting on the Optimum Window-to-Wall Ratio of Residential Buildings in Jordan

2021 ◽  
Vol 11 (13) ◽  
pp. 5888
Author(s):  
Aiman Albatayneh ◽  
Haya Atieh ◽  
Mustafa Jaradat ◽  
Murad Al-Omary ◽  
Maha Zaquot ◽  
...  
Keyword(s):  
Energy Savings ◽  
Residential Buildings ◽  
Light Emitting Diode ◽  
Residential Building ◽  
Artificial Lighting ◽  
Natural Lighting ◽  
Residential Structures ◽  
Lighting Systems ◽  
Ashrae Standards ◽  
The Impact

Energy savings gained through natural lighting could be offset by the loss of energy through windows; therefore, the target of this study is to examine the effects of enhancing the efficiency of lighting systems on the optimum window-to-wall ratio (WWR) of Jordanian residential structures. This research proposes the hypothesis that the WWR of residential structures that contain artificial lighting systems with increased efficiency will be lower than buildings in which solar lighting is provided. The energy simulation tool, DesignBuilder, was used to simulate an intricate model showing a standard Jordanian residential building with a size of 130 m2. The study offers useful guidance regarding the optimum WWR for key decisionmakers when designing energy-efficient residential structures in the context of Jordan. By considering the balance between gains and losses in solar heat and light gain to exploit energy from solar sources with no reverse effects, while making comparisons between different WWR situations, the findings indicate that the typical WWR for residential structures in Jordan that have efficient Light Emitting Diode (LED) systems of lighting installed could be between 25% and 30%, which is lower than the highest WWR stipulated by the ASHRAE standards.

scholarly journals A Multi-Period Approach for the Optimal Energy Retrofit Planning of Street Lighting Systems

2019 ◽  
Vol 9 (5) ◽  
pp. 1025 ◽  
Author(s):  
Raffaele Carli ◽  
Mariagrazia Dotoli ◽  
Roberta Pellegrino
Keyword(s):  
Decision Making ◽  
Energy Efficiency ◽  
Energy Savings ◽  
Lighting System ◽  
Financial Benefit ◽  
Street Lighting ◽  
Single Period ◽  
Lighting Energy ◽  
Lighting Systems ◽  
The City

Investing in the optimal measures for improving the energy efficiency of urban street lighting systems has become strategic for the economic, technological and social development of cities. The decision-making process for the selection of the optimal set of interventions is not so straightforward. Several criticalities-such as difficulties getting access to credit for companies involved in street lighting systems refurbishment, budget constraints of municipalities, and unawareness of the actual energy and economic performance after a retrofitting intervention-require a decision-making approach that supports the city energy manager in selecting the optimal street lighting energy efficiency retrofitting solution while looking not only based on the available budget, but also based on the future savings in energy expenditures. In this context, the purpose of our research is to develop an effective decision-making model supporting the optimal multi-period planning of the street lighting energy efficiency retrofitting, which proves to be more effective and beneficial than the classical single-period approach and has never before been applied to the considered public lighting system context. The proposed methodology is applied to a real street lighting system in the city of Bari, Italy, showing the energy savings and financial benefit obtained through the proposed method. Numerical experiments are used to investigate and quantify the effects of using a multi-period planning approach instead of a single-period approach.

scholarly journals The Implementation of Energy-Saving Lighting Systems for Poultry Houses

2021 ◽  
Author(s):  
Igor Dovlatov ◽  
Leonid Yuferev ◽  
Aleksandr Smirnov ◽  
Yuri Proshkin ◽  
Aleksandr Sokolov
Keyword(s):  
Laboratory Testing ◽  
Energy Savings ◽  
Heating Temperature ◽  
Electricity Consumption ◽  
Poultry House ◽  
Poultry Breeding ◽  
Lighting Energy ◽  
Design Values ◽  
Lighting Systems ◽  
Poultry Farming

The provision of lighting in poultry shelters is an energy-intensive process in poultry farming, due to a lack of sunlight in closed facilities. Lighting plays an important role in the majority of organism biorhythms and it clocks the processes of vital activities of the birds. Lighting directly influences productivity, growth and sexual maturation of birds. A determining factor for the lifetime of an LED is the crystal heating temperature during its operation. It may be assumed that the LED lifetime is largely independent of the variation in the current passing through the LED (within the limits of its design values). The research objective was to conduct laboratory testing to compare the electricity consumption between the existing and a newly developed lighting system for poultry house no. 19 of the Kuchinsky Poultry Breeding Plant. In order to conduct the laboratory testing, the authors developed lighting fixtures consisting of sealed plastic bodies with an LED-carrying PCB inside. The testing continued for 113 days. The new system consumed 662 kWh, while the previous system consumed 783 kWh. Energy savings through the testing period amounted to 15%. During the testing, the new equipment was reliable; no failures of LED fixtures were recorded. Keywords: LED lighting, energy conservation, poultry farming, microclimate

scholarly journals Redesign of Artificial Lighting with Electricity Saving Aspects

2020 ◽  
Vol 3 (1) ◽  
pp. 24-29
Author(s):  
Linwan Abadi Harefa ◽  
Feranita ◽  
Edy Ervianto
Keyword(s):  
Elementary School ◽  
Energy Savings ◽  
Three Dimensional ◽  
Cavity Method ◽  
Artificial Lighting ◽  
Measurement Results ◽  
Simulation Results ◽  
Lighting Systems ◽  
Electricity Saving ◽  
Initial Measurement

Redesign of artificial lighting with electricity saving aspects at the Putri Tujuh Ujung Batu Foundation aims to evaluate the design of artificial lighting systems in several rooms including the Inayah Islamic Elementary School Office, Putri Tujuh Orphanage Dormitory and Fastabiqul Khairat Mosque by calculating aspects of energy savings. Initial measurement results show that the lighting strength in each room does not meet the specified standards. The measurement results are evaluated using the zonal cavity method. It is recommended that the type of lamps used are 2 Philips LED 27 Watt lamps and 33 Philips LED 33 Watt lamps. Calculations with this method are simulated using the DiaLux Evo V.8.2 software which displays a three-dimensional image along with the strength of the lighting in each room. From the simulation results it was found that the use of pure white paint coated walls increases the lighting strength. The percentage of Electricity savings for Inayah Islamic Elementary School office space was 31.25%, Putri Tujuh Orphanage Dormitory was 61.64% and the Fastabiqul Khairat Mosque was 7.11% when compared to the use of Hannochs lamps.

scholarly journals Energy Savings in an Office Building with High WWR Using Glazing Systems Combining Thermochromic and Electrochromic Layers

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 3020 ◽  
Author(s):  
Michaela Detsi ◽  
Aris Manolitsis ◽  
Ioannis Atsonios ◽  
Ioannis Mandilaras ◽  
Maria Founti
Keyword(s):  
Cost Reduction ◽  
Energy Use ◽  
Energy Savings ◽  
Cooling System ◽  
Primary Energy ◽  
Building Envelope ◽  
Office Building ◽  
Visual Comfort ◽  
Artificial Lighting ◽  
G Value

This paper assesses energy savings in terms of heating, cooling, and artificial lighting achieved in an office building with a high Window to Wall Ratio (WWR), located in Athens and Stockholm. Six different configurations of triple pane windows combining thermochromic, electrochromic, and low-e coatings in Insulated Glass Units (IGUs) are examined to quantify the potential of increasing energy savings in office buildings. The combination of electrochromic and thermochromic layers on the outer pane of the triple IGU, achieved an 18.5% and 8.1% reduction in annual primary energy use for Athens and Stockholm, respectively. The used switching strategy ensured the visual comfort of the employees and provided adequate daylight in both cases. It was found that in Stockholm the cooling system can be downsized considerably, achieving important cost reduction in the HVAC system. The analysis also takes into account the reduction of thermal storage in the building envelope due to the switchable windows. This reduction is beneficial in the case of Athens, but it can reduce energy savings in Stockholm. Therefore, for colder climates, it is important to increase window heat gains through the development of layers with higher g-value in the clear state and through the application of appropriate switching strategies.

Genetic-Algorithm Based Controls for Daylighting

Solar Energy ◽  
2006 ◽  
Author(s):  
Abderrezek Khlifi ◽  
Moncef Krarti
Keyword(s):  
Genetic Algorithm ◽  
Energy Use ◽  
Office Building ◽  
Office Space ◽  
Lighting Energy ◽  
Illuminance Level ◽  
Lighting Systems ◽  
Daylighting Control ◽  
Specific Working

This paper describes a daylighting control strategy suitable to operate the electrical lighting fixtures in order to maintain a desired illuminance level for one or several specific working locations. The control is based on genetic algorithm to minimize energy use of electrical lighting systems. The algorithm has been developped using experimental data obtained for an office space in Boulder, Colorado. The GA-based control can be coupled with any switching settings to operate the electrical lighting systems such as on-off, stepped, and dimming. The analysis indicated that the GA-based control can save up to 70% of total electrical lighting energy use for the case study of the office building in Boulder, Colorado.

scholarly journals A Supervisory Control Strategy for Improving Energy Efficiency of Artificial Lighting Systems in Greenhouses

Energies ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 202
Author(s):  
Gianluca Serale ◽  
Luca Gnoli ◽  
Emanuele Giraudo ◽  
Enrico Fabrizio
Keyword(s):  
Control Strategy ◽  
Light Emitting Diode ◽  
Cost Savings ◽  
Energy Performance ◽  
Lighting System ◽  
Light Emitting ◽  
Artificial Lighting ◽  
Lighting Control ◽  
Lighting Systems ◽  
Power Densities

Artificial lighting systems are used in commercial greenhouses to ensure year-round yields. Current Light Emitting Diode (LED) technologies improved the system efficiency. Nevertheless, having artificial lighting systems extended for hectares with power densities over 50W/m2 causes energy and power demand of greenhouses to be really significant. The present paper introduces an innovative supervisory and predictive control strategy to optimize the energy performance of the artificial lights of greenhouses. The controller has been implemented in a multi-span plastic greenhouse located in North Italy. The proposed control strategy has been tested on a greenhouse of 1 hectare with a lighting system with a nominal power density of 50 Wm−2 requiring an overall power supply of 1 MW for a period of 80 days. The results have been compared with the data coming from another greenhouse of 1 hectare in the same conditions implementing a state-of-the-art strategy for artificial lighting control. Results outlines that potential 19.4% cost savings are achievable. Moreover, the algorithm can be used to transform the greenhouse in a viable source of energy flexibility for grid reliability.

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