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

Konis, Kyle

doi:10.1016/j.buildenv.2012.09.017

Cited by 155 publications

(90 citation statements)

References 3 publications

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“…Research on thermal [3,20,21] and visual [22][23][24] comfort in office buildings have been carried out in different countries. One of these studies [3] analyzed the effect of different kinds of interior blinds and curtains on occupants' comfort during winter days under different weather conditions.…”

Section: Introductionmentioning

confidence: 99%

Solar and Lighting Transmission through Complex Fenestration Systems of Office Buildings in a Warm and Dry Climate of Chile

et al. 2014

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Overheating, glare, and high-energy demand are recurrent problems in office buildings in Santiago, Chile (33°27'S; 70°42'W) during cooling periods. Santiago climate is warm and dry, with high solar radiation and temperature during most of the year. The objective of this paper is to evaluate the thermal and daylighting performance of office buildings transparent faç ades composed of three different complex fenestration systems (CFS). Each CFS contains a different external shading device (ESD): (1) external roller, (2) vertical undulated and perforated screens, and (3) tilted undulated and perforated screens. The study was carried out by in situ monitoring in three office buildings in Santiago, Chile. Buildings were selected from a database of 103 buildings, representing those constructed between 2005 and 2011 in the city. The monitoring consisted of measuring the short wave solar and daylighting transmission through fenestration systemsby means of pyranometers and luxometers, respectively. This paper shows measurements that were carried out during summer period. A good performance is observed in a building with the external roller system. This system-applied to a northwest faç ade-shows a regular and high solar and daylighting control of incoming solar radiation. OPEN ACCESSSustainability 2014, 6 2787The other two ESD systems evidence a general good performance. However, some deficiencies at certain times of the day were detected, suggesting a non-appropriated design.

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Section: Introductionmentioning

confidence: 99%

Solar and Lighting Transmission through Complex Fenestration Systems of Office Buildings in a Warm and Dry Climate of Chile

et al. 2014

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“…Such widely known benefits of daylight's presence are better work/or learning performance, motivation and health. However, to achieve these goals, it is necessary to control its negative impacts such as visual discomfort and glare [2,3]. The recognized importance of daylight in buildings is contrasted by the inconsistent use of terminology and planning tools by practitioners, mostly based on rules of thumbs especially in the early design stage [4].…”

Section: Introductionmentioning

confidence: 99%

Three approaches to optimize optical properties and size of a South-facing window for spatial Daylight Autonomy

Kazanasmaz

Grobe

Bauer

et al. 2016

Building and Environment

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a b s t r a c tThis study presents optimization approaches by a recent Climate-Based-Daylight-Modeling tool, EvalDRC, to figure out the necessary area for a daylight redirecting micro-prism film (MPF) while minimizing the glazing area. The performance of a window in terms of spatial Daylight Autonomy (sDA) is optimized by its geometry and optical properties. Data implemented in simulation model are gathered through on-site measurements and Bidirectional-Scattering Distribution Function (BSDF) goniomeasurements. EvalDRC based on Radiance with a data driven model of the films' BSDF evaluates the window configurations in the whole year. The case to achieve an sDA of at least 75% is a South-facing window of a classroom in Switzerland. A window zone from 0.90 m to 1.80 m height provides view to the outside. The upper zone from 1.80 m to 3.60 m is divided into six areas of 0.30 m height in three optimization approaches including the operation of sunshades as well. First, the size of the clear glazing is incrementally reduced to find the smallest acceptable window-to-wall ratio (WWR). Second, microprism films are applied to an incrementally varying fraction the initial glazed area to determine the minimum film-to-window ratio (FWR). Finally, both approaches are combined for a minimum FWR and WWR. With clear glazing and WWR of 75%, the sDA of 70.2% fails to meet the requirements. An sDA of 86.4% and 80.8% can be achieved with WWR 75%, FWR 1/9 and WWR 50%, FWR 1/2 respectively. The results demonstrate the films' potential to improve the performance of windows with reduced WWR.

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“…Similarly, Hirning et al [19] surveyed occupants about their visual comfort in open plan office buildings simultaneously with physical measurements (luminance images), with the aim of linking occupant perception to glare metrics derived from the physical measurements. Konis [7] also used luminance images in their post-occupancy study in a new office building and developed a custom-built desktop polling station to record occupants' visual comfort perception simultaneously with the physical measurements. Observations regarding the positions of window blinds were also extracted from the luminance images.…”

Section: Data Type Data Collection Methods Examples Of Real-world Studiesmentioning

confidence: 99%

“…Measured Visual environment measurements, e.g., illuminance, luminance images [7,11,[18][19][20] Observed Occupant actions and behaviour logging, e.g., blind use, manual overrides of control system, control settings and switch events, system behaviour [7,11,[20][21][22][23][24] Self-reported Questionnaire, interview, ad hoc feedback [7,[18][19][20][21]23] An early study by Rubin et al [21] investigated the interaction of occupants with manual Venetian blinds in an office building by using photographs of the building facades. This technique was also applied by Inoue et al [25], who monitored the window blind positions of a number of buildings to inform the development of a control protocol for automated shading.…”

Section: Data Type Data Collection Methods Examples Of Real-world Studiesmentioning

confidence: 99%

Evaluation of a Mixed Method Approach for Studying User Interaction with Novel Building Control Technology

et al. 2016

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Abstract:Energy-efficient building performance requires sophisticated control systems that are based on realistic occupant behaviour models. To provide robust data for the development of these models, research studies in real-world settings are needed. Yet, such studies are challenging and necessitate careful design in terms of data collection methods and procedures. This paper describes and critiques the design of a mixed methods approach for occupant behaviour research. It reviews the methodology developed for a longitudinal study in a real-world office environment where occupants' experience with a novel facade technology (electrochromic glazing) was investigated. The methodology integrates objective physical measurements, observational data and self-reported experience data. Using data from one day of the study, this paper illustrates how the different sources can be combined in order to derive an in-depth understanding of the interplay between external daylight conditions, characteristics of the facade technology, occupant interaction with the technology and the resulting occupant experience. It was found that whilst the individual methods may be affected by practical limitations, these can be partially offset by combining physical measurements and observations with self-reported data. The paper critically evaluates the individual techniques, as well as the benefits of their integration and makes recommendations for the design of future occupant behaviour studies in real-world settings.

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

Cited by 155 publications

References 3 publications

Solar and Lighting Transmission through Complex Fenestration Systems of Office Buildings in a Warm and Dry Climate of Chile

Solar and Lighting Transmission through Complex Fenestration Systems of Office Buildings in a Warm and Dry Climate of Chile

Three approaches to optimize optical properties and size of a South-facing window for spatial Daylight Autonomy

Evaluation of a Mixed Method Approach for Studying User Interaction with Novel Building Control Technology

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