Daylight availability assessment and its potential energy saving estimation –A literature review

Xu, Yuanli; Su, Yuehong

doi:10.1016/j.rser.2015.07.142

Cited by 158 publications

(80 citation statements)

References 67 publications

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“…The discrepancy indicates the possibility of IES-VE not registering the adjacent buildings blocking the daylight which needs to be further investigated. The measured DF is found to be constantly higher than what radiance simulated, this may be due to the unrealistic CIE Overcast Sky which does not represent the actual dynamic sky condition as argued by many reviews [6,16,18,21,23] …”

Section: Radiance and Daylight Factormentioning

confidence: 85%

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Practicality and Performance of Daylight Trough in The Tropics: A Case Study

Gene-Harn

Reimann²,

Bhaskaran³

et al. 2016

MATEC Web Conf.

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Abstract. The field of office daylighting is vital for both energy efficiency practice and occupants' visual comfort. With the emergence of green building in Malaysia, building designers are exploring avenues for energy efficiency design; one common strategy is daylighting. The majority literature reviews on daylighting are skewed towards temperate or developed countries, where sky luminous condition is different from that of the Tropics. Conventional daylighting system designs redirect daylight from the envelope or atrium openings, such as light shelves. Presumed to be the pioneer daylight trough in the Tropics, this paper presents the simulated and in-situ lighting level measurements prior to occupancy. This case study presents an as-built daylight trough design which is able to daylight the office space as deep as 6 meters sufficiently. It achieves a lighting power density 1.90W/m 2 and saves 39.2% of lighting energy over conventional office lighting energy. Discussed further is the practicality of working with such a system, including cost implication, return on investment and contractual challenges in reaching a consensus on the design. The results reinforce that the effectiveness of daylighting design is very dependable on the sun path and obstacles surrounding the office tower. The RADIANCE simulation correlates well to field measurement results. Further investigation into the light trough, its lighting energy savings, users' interaction, visual comfort, and glare is still ongoing.

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Section: Radiance and Daylight Factormentioning

confidence: 85%

“…Boyce et al [5] further elaborate that lighting conditions can influence the performance of individuals via the visual system, circadian system, and the perceptual system. Yu & Su [6] reviewed 26 papers and found that the amount of induced lighting energy savings from daylight ranges from 30%-87%.…”

Section: Introductionmentioning

confidence: 99%

Practicality and Performance of Daylight Trough in The Tropics: A Case Study

Gene-Harn

Reimann²,

Bhaskaran³

et al. 2016

MATEC Web Conf.

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“…In addition, these environmental information can be connected parametrically to the project data in order to understand the influence of weather and location on the studied project. Another example, "Honeybee" a plugin in Grasshopper as well, used as an engine to OpenStudio, Daysim, Radiance and EnergyPlus [14]while these programs are wellknown simulation tools and have vast utilities in daylight analysis, solar radiation, raytracing study, wind speed, humidity, heating and cooling energy consumption, etc [15]. All these plugins can be connected simultaneously and interact with each other, accordingly, more accurate and optimum results can be obtained.…”

Section: Parametric Design Softwarementioning

confidence: 99%

Parametric design and daylighting: A literature review

Eltaweel

2017

Renewable and Sustainable Energy Reviews

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155

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In the history, architecture was exploited to the human being to protect him from unsteady environmental conditions. In the past centuries, architecture was pioneer art which has special features such as; simplicity, organization, clear style, accurate decoration, material assembly, and so on. However, modern buildings become complex products that have so many parts which have to fulfil different functions. Therefore, new computational ways and techniques have been developed to facilitate the design of modern complicated buildings and to create a convenient quantitative relationship between the environment and the envelope, putting into consideration the obstacles which influence on the building design. This has therefore formed the concept of parametric design in architecture, in order to deal with complex designs and gain more accurate results. Modern architects claim that parametric design is the most creative way to understand the development and complexity of the new era of architectural trends [1]. Meanwhile, it is really hard to deal with sophisticated details in buildings using our brains to imagine, or conventional ways to design [2]. In addition, building technologies nowadays are integrated and containing many disciplines in the same time, and each discipline is dependent on the other disciplines in a very complex vast connections. Hence, they should be organized in a database container, and this container could be managed parametrically using parametric design as an advanced way to explore and understand these sophisticated relations [3]. This paper hence presents a literature review on parametric design in architecture practice and put a focus on its applications in daylighting and solar radiation, which can have an essential impact on improving daylight availability and energy saving.

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“…Reducing artificial lighting energy demand in building during the day requires appropriate daylighting design [6][7][8]. Occupant visual comfort can be maintained via the use of curtains, blinds and adaptive glazings that actively or passively adjust their optical properties [9][10][11].…”

Section: Introductionmentioning

confidence: 99%