A new type of the reflectors for evacuated tubular collectors (ETC) which we referred to as a Compound Circular Reflector (CCR) was designed. The reflectors allow reducing the number of tubes per collector area due to increasing the center-to-center distance of tubes, i.e. the pitch of tubes, so that the weight and cost of the collectors coupled with the reflectors decrease. The reflectors also improve collector efficiency. In comparison with a collector coupled with the planar reflectors, the collector coupled with CCRs accomplished following purposes: The weight per collector area decreases by 20% and the collector efficiency increases by about 7 percentage points as well as the cost of production per collector area decreases by 33%. Therefore the cost-effectiveness of the collectors is markedly improved.
Skip Nav Destination
Article navigation
February 2002
Technical Briefs
Compound Circular Reflector of a Novel Design for Evacuated Tubular Collectors
C. J. Zhao,
C. J. Zhao
Department of Mechanical Engineering, Kitami Institute of Technology, 165 Koen-cho Kitami, Hokkaido 090-8507, Japan
Search for other works by this author on:
K. Kanayama,
K. Kanayama
1-14-203, 3-jo 4-chome Teine-honcho Teine-ku, Sapporo 006-0023, Japan
Search for other works by this author on:
H. Baba
H. Baba
Department of Mechanical Engineering, Kitami Institute of Technology, 165 Koen-cho Kitami, Hokkaido 090-8507, Japan
Search for other works by this author on:
C. J. Zhao
Department of Mechanical Engineering, Kitami Institute of Technology, 165 Koen-cho Kitami, Hokkaido 090-8507, Japan
K. Kanayama
1-14-203, 3-jo 4-chome Teine-honcho Teine-ku, Sapporo 006-0023, Japan
H. Baba
Department of Mechanical Engineering, Kitami Institute of Technology, 165 Koen-cho Kitami, Hokkaido 090-8507, Japan
Contributed by the Solar Energy Division of the American Society of Mechanical Engineers for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division, March 1998; final revision, July 2001. Associate Editor: R. Hogan.
J. Sol. Energy Eng. Feb 2002, 124(1): 83-86 (4 pages)
Published Online: July 1, 2001
Article history
Received:
March 1, 1998
Revised:
July 1, 2001
Citation
Zhao, C. J., Kanayama, K., and Baba, H. (July 1, 2001). "Compound Circular Reflector of a Novel Design for Evacuated Tubular Collectors." ASME. J. Sol. Energy Eng. February 2002; 124(1): 83–86. https://doi.org/10.1115/1.1435649
Download citation file:
Get Email Alerts
Cited By
Analysis of Erosion of Surfaces in Falling Particle Concentrating Solar Power
J. Sol. Energy Eng (April 2025)
Related Articles
A New Troughlike Nonimaging Solar Concentrator
J. Sol. Energy Eng (February,2002)
Low-Cost Inflatable Heliostat for Solar Thermal Powerplants
J. Sol. Energy Eng (August,2002)
Three-Dimensional Analysis of a Concentrated Solar Flux
J. Sol. Energy Eng (February,2008)
Optical Durability of Candidate Solar Reflectors
J. Sol. Energy Eng (May,2005)
Related Proceedings Papers
Related Chapters
Development of a Two-Stage Solar Concentrator Using Fresnel Lens and Dish Reflector
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Rub and Looseness
Fundamentals of Rotating Machinery Diagnostics
The B. A. C. H. Pattern and Mathematics
International Conference on Future Computer and Communication, 3rd (ICFCC 2011)