High Performing Buildings - Summer 2012 - (Page 56)

the north field over the year). And, in summer, the south PV array produces more than the north one. This is mostly due to a higher solar radiation in summer and because the sun path faces south during summer. In conclusion, the architectural choice of designing two PV arrays with two orientations does not have a significant impact on the overall PV production of the building. In general, the performances of the building far exceeded the expectations during design. But improvements are still possible to decrease the energy use of the building, some of which depend on the users of the building. • Acknowledgments The work presented in this case study was partly developed in the context of the joint IEA SHC Task 40/ECBCS Annex 52: Towards Net Zero Energy Solar Buildings. The French contribution has been funded by the ADEME. The authors would like to thank the Regional Office of the ADEME in La Reunion and the Regional Council of La Reunion, which funded the monitoring system of ENERPOS. References 1 IEA. 2008 “International Energy Agency SHC Task 40 / ECBCS Annex 52 – Towards Net Zero Energy Solar Buildings.” www.iea-shc.org/task40/. 2 Garde, F., A. Lenoir, and F. Thellier. 2011. “Towards net zero energy buildings in hot climates. Part I: new tools and methods.” ASHRAE Transactions 117(1):458-65. 3 Givoni, B. 1976. Man, Climate and Architecture. London: Applied Science Publishers Ltd. 4 Lenoir, A., F. Garde, and M. David. 2011. “Towards net zero energy buildings in hot climates. Part II: experimental feedback.” ASHRAE Transactions 117(1):450-7. About the AuthoRs Aurélie Lenoir, Student Member ASHRAE, is an engineer and Ph.D. student at the laboratory of Physical and Mathematical Engineering for Energy and Environment (PIMENT) at the University of La Reunion. François Garde, Ph.D., P Member .E., ASHRAE, is a professor in the Department of Sustainable Construction at the École Supérieure d’Ingénieurs Réunion Océan Indien (school of engineering), and a researcher at PIMENT Laboratory, at the University of La Reunion. Conclusion ENERPOS shows that with current technologies and only 9% additional cost, it is possible to build a building that consumes 10 times less energy than a standard building and produces seven times more energy than it consumes. Occupant surveys show that the occupants find this NZEB to be comfortable.4 • 30% increase in efficiency over TP-1 transformers • Exceeds requirements of DOE CSL-3 • Reduces annual energy consumption cost • Three-phase up to 500 kVA • Up to K-Factor 20 • 115°C and 150°C temperature rise • Single-phase up to 250 kVA • Three-phase up to 1,000 kVA • 80°C, 115°C and 150°C temperature rise HPB.hotims.com/37999-2 http://www.iea-shc.org/task40/ http://www.acmetransformer.com http://www.acmetransformer.com http://HPB.hotims.com/37999-2

Table of Contents for the Digital Edition of High Performing Buildings - Summer 2012

High Performing Buildings - Summer 2012
Commentary
Contents
High Tech High Chula Vista
Kiowa County Schools
Northwest Maritime Center
La Reunion’s ENERPOS
Wilfred Uytengsu Sr. Center
Products
Advertisers Index

High Performing Buildings - Summer 2012

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