Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30178
Optical Analysis of Variable Aperture Mechanism for a Solar Reactor

Authors: Akanksha Menon, Nesrin Ozalp

Abstract:

Solar energy is not only sustainable but also a clean alternative to be used as source of high temperature heat for many processes and power generation. However, the major drawback of solar energy is its transient nature. Especially in solar thermochemical processing, it is crucial to maintain constant or semiconstant temperatures inside the solar reactor. In our laboratory, we have developed a mechanism allowing us to achieve semi-constant temperature inside the solar reactor. In this paper, we introduce the concept along with some updated designs and provide the optical analysis of the concept under various incoming flux.

Keywords: Aperture, Solar reactor, Optical analysis, Solar thermal

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1077950

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1060

References:


[1] Ozalp N, Epstein M, Kogan A, "Cleaner pathways of hydrogen, carbon nano-materials and metals production via solar thermal processing", Int. J. Cleaner Production, vol. 18, pp. 900-907, 2010.
[2] Muradov NZ, Veziroglu TN, "From hydrocarbon to hydrogen-carbon to hydrogen economy", Int. J. Hydrogen Energy, vol. 30, pp. 225-237, 2005.
[3] Steinfeld A, "Solar thermochemical production of hydrogen - a review", vol. 78, pp. 603-615, 2005.
[4] Ozalp N, Toyama A, Jayakrishna D, Rowshan R, Al-Hamidi Y, "Effect of camera-like aperture in quest for maintaining quasi-constant radiation inside a solar reactor", ASME Journal of Mechanical Design, vol. 133, issue 2, pp. 021002, 2011.
[5] Ozalp N, Toyama A, Mohamed M, AlShammasi M, Roshan DR, Farghaly A, "A smart solar reactor for environmentally clean chemical processing", Chemical Engineering Transactions, vol. 25, pp. 989-994, 2011.
[6] Al-Hamidi Y, Abdulla S, El Zamli M, Rizk I, Ozalp N, "Design, manufacturing and testing of an aperture mechanism for a solar reactor", ASME 5th Energy Sustainability Conference & Fuel Cell Conference. Paper No: ES2011-54567, 2011.
[7] Jubb A, "Solar heat aperture control apparatus", U.S. Patent No. 4,222,367, 1980.
[8] Hill R, "Variable aperture collimator for high energy radiation", U.S. Patent No. 4,450,578, 1984.
[9] Sheng S, "Adjustable Aperture", U.S. Patent No. 4,910,739, 1990.
[10] Haung Y, "Automatic Diaphragm Assembly with a Variable Aperture for a Lens", U.S. Patent No. 2005/0226612 A1, 2005.
[11] Echner G, Kilby W, Lee M, Earnst E, Sayeh S, Schlaefer A, Rhein B, Dooley J, Lang C, Blanck O, Lessard E, Maurer C, Schlegel W, "The design, physical properties and clinical utility of an iris collimator for robotic radiosurgery" Phys. Med. Biol., vol. 54, pp. 5359-5380, 2009.
[12] Steinfeld A, Schubnell M, "Optimum Aperture Size and Operating Temperature of a Solar Cavity-Receiver", Solar Energy, vol. 50, pp. 19- 25, 1993.