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STUDIES IN PRELIMINARY DESIGN OF FENESTRATION:
BALANCING DAYLIGHT HARVESTING AND ENERGY CONSUMPTION
by
Geman Wu
A Thesis Presented to the
FACULTY OF THE USC SCHOOL OF ARCHITECTURE
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
MASTER OF BUILDING SCIENCE
May 2012
Copyright 2012 Geman Wu
Object Description
| Title | Studies in preliminary design of fenestration: balancing daylight harvesting and energy consumption |
| Author | Wu, Geman |
| Author email | gemanwu@usc.edu;wugeman@gmail.com |
| Degree | Master of Building Science |
| Document type | Thesis |
| Degree program | Building Science |
| School | School of Architecture |
| Date defended/completed | 2012-05-09 |
| Date submitted | 2012-05-09 |
| Date approved | 2012-05-09 |
| Restricted until | 2012-05-09 |
| Date published | 2012-05-09 |
| Advisor (committee chair) | Kensek, Karen |
| Advisor (committee member) |
Schiler, Marc Simmonds, Peter |
| Abstract | The early decisions made during the design phase of a building regarding the choice of windows have a large impact on future energy consumption. Although the final selection depends on many issues not directly related to energy concerns including aesthetics, cost, material, views, and client preferences, energy consumption is a major factor for several reasons. These include environmental concerns, financial aspects, code compliance, operations and maintenance over the lifetime of the building, and occupant comfort. One technique for saving energy is to harvest daylight; this lessens the amount of electricity needed for indoor artificial lighting while maintaining adequate lighting levels. There are trade-offs, however, as larger windows that allow more daylight can be detrimental in other areas, such as increased heating and cooling loads depending on the location of the building, the climate, and even the season as benefits and drawbacks change over the year. ❧ This thesis explores balancing daylight harvesting and energy demands of fenestration in the early design stage for office buildings in two climate zones in California. Window orientation, height, aspect ratio, window-to-wall ratio, lighting design level, glazing, and exterior shading are parameters that were analyzed by DIVA for Grasshopper, EQUEST, and COMFEN. The simulation results provide guidelines for designers reducing cooling loads and electric lighting use throughout the year. These guidelines are, for example, window-to-wall ratio of 10%-30% is recommended for south and window-to-wall ratios of 30%-60% promise better energy performance on north, a window-aspect-ratio of 2/1 saves most energy load for all orientations. |
| Keyword | energy trade-off; daylight harvesting; fenestration guideline; Diva for Grasshopper |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Rights | Wu, Geman |
| Access conditions | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@usc.edu |
| Archival file | uscthesesreloadpub_Volume4/etd-WuGeman-838.pdf |
Description
| Title | Page 1 |
| Full text | STUDIES IN PRELIMINARY DESIGN OF FENESTRATION: BALANCING DAYLIGHT HARVESTING AND ENERGY CONSUMPTION by Geman Wu A Thesis Presented to the FACULTY OF THE USC SCHOOL OF ARCHITECTURE UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree MASTER OF BUILDING SCIENCE May 2012 Copyright 2012 Geman Wu |
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