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2 9 . C a m S e m p o z y u m u / 2 9 . G l a s s S y mp o s i u m - 0 7 K a s ı m 2 0 1 4 / 0 7 N o v e m b e r 2 0 1 4
Kadir Has Üniversitesi Cibali Kampüsü – Balat / İstanbul (D Blok Büyük Salon: 3. Oturum 14:00 -14:30)
DESIGN OF ORGANIC ELECROCHROMIC WINDOWS
TOWARD ZERO-ENERGY BUILDING
Prof. Minoru Taya
Director
Center for Intelligent Materials and Systems
Department of Mechanical Engineering
Nabtesco Enhowed Chair Professor
University of Washington Seattle, WA 98915, USA
[email protected]
Dr. Minoru Taya has been a Professor of Mechanical Engineering,
and Adjunct Professor of Materials Science and Engineering, and
Electrical Engineering at the University of Washington since 1986.
Most recently he became an Adjunct Professor for the School of
Dentistry, Oral Health Science , UW. He received a Bachelor of
Engineering in 1968 from the University of Tokyo, Japan; Master of
Science in Civil Engineering in 1973 and Doctor of Philosophy in
Theoretical Applied Mechanics in 1977, both from Northwestern
University.
Dr. Taya is currently director of the Center for Intelligent Materials
and Systems (CIMS). The intelligent materials that he has been
studying are shape memory alloys (SMA), ferromagnetic SMA
(FSMA), piezo-composites, electro- and photo-active polymers, and
designed actuators based on these materials, including compact
ferromagnetic SMA spring actuators, which provides a large stroke
and reasonably large force at very high actuation speed. The FSMA
actuators are for use in unmanned aircrafts and unmanned ground
rover, as well as robotic arms. The electroactive polymers (EAPs)
include hydrogels such as Nafion and Flemion, and electrochromic
polymers. These EAPs are the key materials for fish fin actuators,
smart antenna and smart window technology. In addition, Dr. Taya
has been working on design and processing of several energyharvesting materials and systems; (i) energy-harvesting
electrochromic window (NSF-EFRI) and thermoelectric modules with
low-cost and light-weight for UAV combustion chambers (AFOSR).
Most recently, Dr. Taya has been working on oral implant materials
based on toxic-free SMAs.
Dr. Taya served as Associate Editor for Materials Science and
Engineering-A, and ASME Journal of Applied Mechanics, and chair
of the Electronic Materials Committee of ASME Materials Division.
Dr. Taya is Fellow of ASME, American Academy of Mechanics, and
International Editorial Board member of Advanced Composite
Materials.
Dr. Taya has written two monograph books, (i) Metal matrix
composites with R.J. Arsenault, Pergamon Press, 1989, and (ii)
Electronic Composites, Cambridge University Press, 2005, and
currently writing third book, “Bioinspired active and sensing
materials and systems” in collaboration with several biologists.
Bildiri Özetleri / Abstracts •
Araştırma ve Teknolojik Geliştirme Başkanlığı / Research and Technological Development Presidency - 1
2 9 . C a m S e m p o z y u m u / 2 9 . G l a s s S y mp o s i u m - 0 7 K a s ı m 2 0 1 4 / 0 7 N o v e m b e r 2 0 1 4
Kadir Has Üniversitesi Cibali Kampüsü – Balat / İstanbul (D Blok Büyük Salon: 3. Oturum 14:00 -14:30)
ABSTRACT
Energy consumption within buildings is increasing, due to many factors including the
demand for human comfort related to temperature (θ), humidity (H), visual comfort (VC,
contrast/glare/luminance ranges), sound/noise (SN), safety (S), and views (V, e.g.,
connection to the nature outside). To increase comfort while reducing energy dependence
from central/utility generation, we must employ a new concept, “locally harvesting and
locally use” which is the norm for biological species, animals and plants.
Among all building components, windows are considered the most influential building
component for the improvement of the six comfort parameters, have substantial impact
on building energy consumption, and offer great potential for energy harvest. Within this
context, Taya’s group has recently developed organic electrochromic windows (ECWs)
(Xu et al, 2004) including energy harvesting-ECW that promise substantial improvements
over existing and emerging window systems. Further, as thermal energy is a major energy
loss for any building, thermoelectrics (TE) systems, offer an un-tapped source for energy
harvest. Thus, we propose to move towards zero-energy buildings by combining, organic
ECW, EH-ECWs with thermoelectrics systems and sensing/control for power
optimization.
I will discuss first organic ECW based on cathodic EC film and inorganic TiO2/V2O5
counter electrode which can dynamically control solar heat gain coefficient, thus,
reducing cooling energy, then on the organic ECW based on cathodic and anodic EC
films (Kim et al, 2013), which has higher contrast ratio. Finally, I will discuss EH-ECW
design which we made most recently first in the world (Amasawa et al, 2014). A typical
zero-energy building is equipped with vertically integration of ECWs, EH-ECW, and
solar panels on the roof.
References
1. Amasawa, E., Sasagawa, N., Kimura, M. and Taya, M., 2014, “Design of a new energy-harvesting
electrochromic window based on organic polymeric dye, cobalt couple and PProDOT-Me2
“,Advanced Energy Materials, 8, 2457-2463
2. Kim, S., Kong, X., and Taya, M., 2013, "Electrochromic windows based on anodic electrochromic
polymesitylenes containing 9H-carbazole-9-ethanol moieties", Solar Energy Materials and Solar
Cells, Solar Energy Materials & Solar Cells 117,183–188.
3. Xu, C., Liu, L., Legenski, S., Ning, D. and Taya, M., 2004, “Switchable Window Based on
Electrochromic Polymers”, J. Materials Research, Vol.19, No.7, 2072-2080.
Keywords: Energy, Electrochromic windows
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