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

Albatayneh, Aiman; Atieh, Haya; Jaradat, Mustafa; Al-Omary, Murad; Zaquot, Maha; Juaidi, Adel; Abdallah, Ramez; Manzano‐Agugliaro, Francisco

doi:10.3390/app11135888

Cited by 17 publications

(7 citation statements)

References 25 publications

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“…Window-to-Wall Ratio (%) = 0.836 × (LED Lighting lamps efficiency (lm/W)) −0.27 It is therefore proposed that in general, the WWR for residential structures equipped with LED lighting systems can be reduced to 17%, which is less than the WWR threshold of 40% recommended in the ASHRAE standard, as well as other building codes [40,47]. Additionally, it is recommended that energy simulation software should be employed when designing future residential buildings in order to optimize the WWR, because changes made to one element have the potential to impact various other interconnected elements.…”

Section: Resultsmentioning

confidence: 99%

“…The material used for the window frame was aluminum and its total U W/m 2 .K. The glazing of the outside windows was comprised of Generic blu ness of 6 cm, followed by an air gap of 5 cm, and finally, a Generic clear glaz a thickness of 6 cm, which has a total U-value of 3.1 W/m 2 .K, overall sola (SHGC) of 0.7, direct solar transmission of 0.6, and light transmission of 0.7 the windows was modified according to 11 distinct scenarios, with a favo 1.5 m [40].…”

Section: Methodsmentioning

confidence: 99%

“…A 30 cm-thick concrete later is used in the construction of the ground floor, with a covering of 10 cm of sand and 5 cm of ceramic/clay tiles, and a total U-value of 1.9 W/m 2 .K. The roof was comprised of a 33 cm-thick layer of reinforced concrete and 2 cm layer of cement plaster, having a total U-value of 0.53 W/m 2 .K [40].…”

Section: Methodsmentioning

confidence: 99%

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Influence of the Advancement in the LED Lighting Technologies on the Optimum Windows-to-Wall Ratio of Jordanians Residential Buildings

et al. 2021

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Based on recent developments and the predicted future advancement of lighting technologies, researchers are now questioning the extent to which daylight is effective in lowering the overall energy consumption of buildings. As light-emitting diode (LED) luminaires are highly energy efficient, the amount of power consumed for lighting purposes can be reduced, even in situations where the lighting system is at its full power. It has already been demonstrated that LED-lighting technologies can facilitate significant energy savings through minimizing window size (the main source of heat loss in buildings), and there is considerable potential for developing the LEDs’ source efficacy and lighting-product efficiency to ultimately achieve levels of efficacy of approximately 350 lumens per Watt (lm/W). For building designs to be sustainable in the future, it is critical that the windows-to-wall ratio (WWR) is optimized to minimize both heating and cooling loads, as well as the total energy consumed by the building for lighting, according to the efficiency of the LED, while still maintaining a suitable lighting level for occupants. This research examines the influence of the WWR on the total amount of energy consumed by standard buildings in Jordan using various LED luminaires (existing and projected efficiencies). DesignBuilder software was utilized to analyze the effect of LED-technology development on optimizing the WWR for a typical residential structure in Jordan. The research presents beneficial recommendations with respect to optimizing the WWR for primary decision-makers in the design of residential buildings with enhanced energy efficiency, considering the losses and gains associated with solar heat and light to capitalize on solar energy with no adverse impacts by windows size. The outcomes suggest a WWR of 17% could be achieved by typical residential buildings in Jordan that have extremely efficient LED lighting systems (350 lm/W), which is more than 50% less than the existing level of 40% recommended by multiple standards. Additionally, this study highlighted that when the efficiency of LED technologies increases, the energy demand of the building will be reduced because of lower energy usage combined with heat gain resulting from the LED efficiency.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Influence of the Advancement in the LED Lighting Technologies on the Optimum Windows-to-Wall Ratio of Jordanians Residential Buildings

et al. 2021

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“…Albatayneh et al, offered useful guidance regarding the optimum Window-Wall-Ratio (WWR) for key decision-makers when designing energy-efficient buildings in Jordan. The findings indicated that the typical WWR in Jordan that have efficient LEDs lighting installed could be lower than the highest WWR stipulated by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) standards [20]. Instead of the classical approach based on static metrics-i.e., Daylight Factor, dynamic metrics provide a more accurate quantification of energy savings in electric lighting when compared to traditional daylight static concepts.…”

Section: Figure 3 How Can Bim Model Contributes To Lighting Design An...mentioning

confidence: 97%

A Critical Review of Lighting Design and Asset Management Strategies. Illuminating Practices and Lessons Learned for Swedish Public Libraries

Shen,

Zhang,

Mylly

et al. 2023

J. Phys.: Conf. Ser.

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Most lighting is only designed to meet the visual needs in most public library environments in Sweden. Although lighting-related impacts are relevant to six Unite Nations sustainability goals, some important lighting considerations, such as circadian phase disruption, mode and productivity impact, and energy-efficient operation, are missing in current lighting operating practices. Moreover, most of the current lighting asset management practice in public buildings remains “fix it if only it breaks”. With respect to people-centric health factors, visual index, and lighting asset energy-efficient operation, this study sublimates lighting into a new perspective. Finally, the suggested comprehensive lighting operating strategies integrating digital twins can help designers and operators in defining the optimal design/control strategy in public-built environments, like public library. Digital twin-based decision-making is expected to be applied to lighting design and control in public spaces that improves visual acuity and comfort, positively impact mood and productivity, and provides recommendations on engagement principles under Environment Social Governance (ESG) framework to asset manager/operators.

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“…Occupant behaviour and adaptation to the current environment can save a significant amount of cooling energy through the application of shading devices, the use of night ventilation, and the employment of adaptation techniques (wearing breathable clothes, drinking water, and using low-energy solutions, such as fans) instead of completely relying on mechanical systems. The amount of possible savings can exceed 50% of the cooling energy depending on the adaptation level and the awareness of the occupants [41][42][43].…”

Section: Energy Saving Through Solar Shading and Occupant's Behaviourmentioning

confidence: 99%

The Significance of Occupants’ Interaction with Their Environment on Reducing Cooling Loads and Dermatological Distresses in East Mediterranean Climates

Muhaidat

Albatayneh

Assaf

et al. 2021

IJERPH

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Global endeavors to respond to the problems caused by climate change and are leading to higher temperatures inside homes, which can cause skin conditions (such as eczema), lethargy, and poor concentration; disturbed sleep and fatigue are also rising. The energy performance of buildings is influenced by interactions and associations of numerous different variables, such as the envelope specifications as well as the design, technologies, apparatuses, and occupant behaviours. This paper introduces simple and sustainable strategies that are not dependent on expensive or sophisticated technologies, as they rely only on the actions practiced by the building’s occupants (movable window shading, and nighttime natural ventilation) instead of completely relying on high-cost mechanical cooling systems in buildings located in the main Eastern Mediterranean climates represented in the country of Jordan. These low-energy solutions could be applied to low-income houses in hot areas to avoid health problems, such as dermatological diseases, and save a significant amount of energy. The final results indicate that window shading has significant potential in reducing the cooling load in different climate zones. Natural ventilation exhibits high energy-saving abilities in climates that have cool nights, whereas its abilities in hot climates where nights are moderate is limited.

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

Cited by 17 publications

References 25 publications

Influence of the Advancement in the LED Lighting Technologies on the Optimum Windows-to-Wall Ratio of Jordanians Residential Buildings

Influence of the Advancement in the LED Lighting Technologies on the Optimum Windows-to-Wall Ratio of Jordanians Residential Buildings

A Critical Review of Lighting Design and Asset Management Strategies. Illuminating Practices and Lessons Learned for Swedish Public Libraries

The Significance of Occupants’ Interaction with Their Environment on Reducing Cooling Loads and Dermatological Distresses in East Mediterranean Climates

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