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TECHNICAL PAPERS

Performance Study of a Bi-Directional Thermodiode Designed for Energy-Efficient Buildings

[+] Author and Article Information
Wongee Chun

Department of Nuclear & Energy Engineering, (Research Institute of Advanced Technology), Cheju National University, Cheju 690-756, Koreae-mail: wgchun@cheju.ac.kr

Kuan Chen

Department of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112

Hyung Taek Kim

Department of Energy, Ajou University, Suwon 441-749, Korea

J. Sol. Energy Eng 124(3), 291-299 (Aug 01, 2002) (9 pages) doi:10.1115/1.1498849 History: Received April 01, 2000; Revised May 01, 2002; Online August 01, 2002
Copyright © 2002 by ASME
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References

Figures

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A rectangular-loop thermosyphon
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Present design of a bi-directional thermodiode
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Methods for adjusting the incident thermal radiation
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Photograph of the tested thermodiode
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Conceptual drawing of a stand-alone, bi-directional thermodiode system for energy-efficient buildings
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Temperature variations of the thermodiode during the: a) heat-up and b) cool-down phases (Radiation flux=400 W/m2 during heat-up)
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Temperature variations of the thermodiode during the: a) heat-up and b) cool-down phases (Radiation flux=600 W/m2 during heat-up)
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Temperature variations of the thermodiode during the: a) heat-up and b) cool-down phases (Radiation flux=800 W/m2 during heat-up)
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Locations on the thermodiode where temperatures were measured in the indoor tests
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Temperature variations of the thermodiode during the heat-up and cool-down phases under a reverse-biased mode (Radiation flux=800 W/m2 during heat-up)
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Normalized heat transfer rates during the start-up and heat-up phases for 600 W/m2 radiation incident on the diode system

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