NDLI: Design, Manufacturing and Testing of a Camera-Like Aperture Mechanism for a Solar Reactor

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Abdulla, Shameel Zahreddine, Hussein Zamli, Mahmoud El Majid, Feras Abdul Rizk, Ihab Hamidi, Yasser Al Ozalp, Nesrin
Copyright Year	2011
Abstract	Changes in weather conditions, such as passing clouds, haze, or too sunny etc., result with fluctuation in solar radiation entering a solar reactor. This creates a major problem in solar reactor efficiency. Because: solar reactors must be operated at certain temperatures depending on the required dissociation temperature of the feedstock. For example, natural gas cracking solar reactors require temperatures of about 1500K to produce hydrogen and carbon. Fluctuation in solar radiation due to weather changes creates temperature fluctuation inside the solar reactor preventing from maintaining constant or semi-constant production rate. In this paper, we present our most recent research results toward solving this problem by designing, manufacturing, and testing a camera-like aperture mechanism. With this mechanism, it is possible to achieve semi-constant temperatures inside the solar reactor by adjusting the solar reactor itself against changes in the incoming solar radiation. Results show that when the incoming solar radiation is 5kW, the aperture radius should be 1.8cm to have reactor temperature at 2100K. However, to keep this temperature when the incoming radiation is 7kW, the aperture radius should be 3.2cm. It should be also noted that at lower temperatures, optimum aperture radius converges to one value, which is about 4.7cm.
Starting Page	305
Ending Page	319
Page Count	15
File Format	PDF
ISBN	9780791854891
DOI	10.1115/IMECE2011-65814
Volume Number	Volume 3: Design and Manufacturing
Conference Proceedings	ASME 2011 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2011-11-11
Publisher Place	Denver, Colorado, USA
Access Restriction	Subscribed
Subject Keyword	Iris mechanism Dynamic controller Aperture Solar reactor Sensor Design Manufacturing Solar energy Testing
Content Type	Text
Resource Type	Article

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