Literature Review of the Effects of Natural Light on Building Occupants

Edwards, Lyman Landreth; Torcellini, P.

doi:10.2172/15000841

Cited by 301 publications

(252 citation statements)

References 26 publications

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“…Because of this tilt, the light shelf presents a seasonal selectivity to reflected sunlight. 4 Exterior light shelves can shade the lower window and if designed properly their performance can be better than conventional shading systems (i.e., overhangs) [39,46]. 5 Uniformity of daylight illuminance do increase although luminance contrast can be increased giving rise to glare problems.…”

Section: Discussionmentioning

confidence: 99%

“…Daylight is preferred by users because of its psychological and physiological effects. These effects are well documented, covering an area from improved health, well-being and productivity for the users, to significant building energy savings [1][2][3][4][5]. Lighting control systems can reduce energy use from electricity by 20% or even up to 60% in certain conditions [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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A Review of Light Shelf Designs for Daylit Environments

et al. 2017

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Light shelves have been discussed in numerous studies as suitable solutions for controlling daylight in side-lit spaces. It is a system that can be easily modified, offering a range of design solutions. It can be easily mounted on the exterior and/or the interior of a vertical opening, it can come in various shapes from static flat forms to curved reflective surfaces, or it can even be actively controlled. A light shelf can offer shading and at the same time can redirect a significant part of the incoming light flux towards the ceiling improving daylight uniformity. Due to the aforesaid functions, light shelves are among the most popular system design solutions when it comes to daylight exploitation. The purpose of this paper is twofold. Firstly, to present the main research findings in relation to light shelves as daylighting systems and secondly to analyze the results, trying to establish a common basis for some efficient and practical design rules. The present paper is a review of the research realized in the last three decades concerning these systems together with their associated implications in a building's daylight performance as well as in its energy balance in a few cases. In addition, the critical review of their design principles is included, which makes the presented information useful for design teams trying to select the optimal available system for any specific project.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review of Light Shelf Designs for Daylit Environments

et al. 2017

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“…Thus, facade strategies that control solar loads while transmitting sufficient daylight to minimize the need for electrical lighting have the potential to significantly improve energy performance compared to conventional commercial office buildings. In addition to energy, a growing body of research demonstrates that the introduction of daylight into interior environments has implications for occupant comfort, health, well-being, and productivity [3,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

Evaluating daylighting effectiveness and occupant visual comfort in a side-lit open-plan office building in San Francisco, California

Konis

2013

Building and Environment

148

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“…17 Higher light levels during the day, achieved via exposure to natural sunlight, are integral to human health. 18 Outside the health care environment, previous studies 16,19 have indicated that the presence of windows and sunlight improves job satisfaction. Furthermore, sound levels in most ICUs are universally higher than those recommended by the World Health Organization.…”

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confidence: 99%

“…13 In addition to potential benefits for patients, modifying the external environment to promote sleep for patients may also have favorable effects on nurses' stress and job satisfaction. [14][15][16] Caring for critically ill children and their families has a strong emotional impact. Nursing has been well-established as a stressful profession, and studies of ICU nurses have shown that work satisfaction and stress levels are strongly correlated.…”

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confidence: 99%