Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study

In addition to windows, louvers are the most common architectural elements widely used in office buildings to protect them from excessive daylight and improve daylight penetration as well. Advanced glazing, window blinds, other fenestration systems and their automation can further improve daylightin...

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Main Authors: Eltaweel, Ahmad, Su, Yuehong
Format: Article
Published: Elsevier 2017
Online Access:https://eprints.nottingham.ac.uk/44467/
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author Eltaweel, Ahmad
Su, Yuehong
author_facet Eltaweel, Ahmad
Su, Yuehong
author_sort Eltaweel, Ahmad
building Nottingham Research Data Repository
collection Online Access
description In addition to windows, louvers are the most common architectural elements widely used in office buildings to protect them from excessive daylight and improve daylight penetration as well. Advanced glazing, window blinds, other fenestration systems and their automation can further improve daylighting performance. However, the stability and uniformity of daylight distribution throughout a day inside a building remain a challenge. To explore a solution for this issue, this paper proposes an advanced integrated lighting system combining different architectural elements, which can be controlled parametrically. The suitable design of such integrated system is identified through a multi-step comparison study employing parametric design approach. The criteria is to keep a relatively uniform daylight distribution in the range of 300 – 500 lux over 90% of the whole desktop area in a 7-meter-deep office room. An office building in New Cairo was chosen for a case study, where it is south oriented with a prevailing condition of clear sky. Hourly results on the 21st of several chosen months are given to show the suitability of the proposed design throughout a year, aiming to explore the maximum use of daylight and hence reduce the energy consumption of electrical lighting. The comparison indicates that the combined use of the integrated system can achieve a satisfactory relatively uniform distribution of daylight over about 90% of the desktop area, within illuminance range of 300 – 500 lux for most of the working hours throughout a year.
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spelling nottingham-444672020-05-04T19:09:17Z https://eprints.nottingham.ac.uk/44467/ Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study Eltaweel, Ahmad Su, Yuehong In addition to windows, louvers are the most common architectural elements widely used in office buildings to protect them from excessive daylight and improve daylight penetration as well. Advanced glazing, window blinds, other fenestration systems and their automation can further improve daylighting performance. However, the stability and uniformity of daylight distribution throughout a day inside a building remain a challenge. To explore a solution for this issue, this paper proposes an advanced integrated lighting system combining different architectural elements, which can be controlled parametrically. The suitable design of such integrated system is identified through a multi-step comparison study employing parametric design approach. The criteria is to keep a relatively uniform daylight distribution in the range of 300 – 500 lux over 90% of the whole desktop area in a 7-meter-deep office room. An office building in New Cairo was chosen for a case study, where it is south oriented with a prevailing condition of clear sky. Hourly results on the 21st of several chosen months are given to show the suitability of the proposed design throughout a year, aiming to explore the maximum use of daylight and hence reduce the energy consumption of electrical lighting. The comparison indicates that the combined use of the integrated system can achieve a satisfactory relatively uniform distribution of daylight over about 90% of the desktop area, within illuminance range of 300 – 500 lux for most of the working hours throughout a year. Elsevier 2017-10-01 Article PeerReviewed Eltaweel, Ahmad and Su, Yuehong (2017) Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study. Energy and Buildings, 152 . pp. 137-148. ISSN 0378-7788 http://www.sciencedirect.com/science/article/pii/S0378778817307296 doi:10.1016/j.enbuild.2017.07.033 doi:10.1016/j.enbuild.2017.07.033
spellingShingle Eltaweel, Ahmad
Su, Yuehong
Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study
title Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study
title_full Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study
title_fullStr Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study
title_full_unstemmed Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study
title_short Using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-Step comparison study
title_sort using integrated parametric control to achieve better daylighting uniformity in an office room: a multi-step comparison study
url https://eprints.nottingham.ac.uk/44467/
https://eprints.nottingham.ac.uk/44467/
https://eprints.nottingham.ac.uk/44467/