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Authors: Teresa Burrelsman, Braam De Villiers, Felicity Lewis, and Peyush Agarwal School: University of Arizona
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| Abstract: The study
concentrated on the conflict between the choice of elements for architectural effect and
the solar requirements. The objectives were to evaluate the energy performance of the
building, the effectiveness of the complicated energy strategies and the effect of solar
radiation on internal load dominated buildings. Data collection consisted of site surveys
conducted during two site visits. The student team gathered information on occupant use,
electrical equipment and building materials, including on-site measurements. The envelope
data was coded and then input into the energy simulation program, CalPas3. After creating a reliable computer model, the team studied the possibility of replacing the active systems with simplified passive systems. The concepts modeled were fixed shading on the south facade, reduced solar gain through the roof and a “two-zone” strategy that combined evaporative cooling and conventional air conditioning. The team found that the fixed shading achieved results similar to those of the computer controlled louvers. The skylights were a significant source of solar radiation, but could be designed to minimize heat gain while optimizing daylighting effects. Lastly, independent zoning of major functions can allow the use of evaporative cooling, a more efficient cooling strategy than standard air conditioning. In internal load dominated buildings, moderation of interior heat sources is the most critical issue. However, especially in an extreme climate, the building envelope can play a significant part in reducing energy consumption. |
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Background: This investigation won second prize in the 1996 Vital Signs Student Case Study Competition. The authors of the case study, Teresa Burrelsman, Braam De Villiers, Felicity Lewis, and Peyush Agarwal, were students in the College of Architecture at the University of Arizona at the time of the study. Their faculty advisor was Nader Chalfoun. |
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All contents copyright (C) 1998. Vital Signs Project. All rights reserved. Created: 11/10/98 |
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Phoenix Central Library: Thermal Performance of a Desert
Monument
