Design, manufacturing and testing of a camera-like aperture mechanism for a solar reactor

Shameel Abdulla, Hussein Zahreddine, Mahmoud El Zamli, Feras Abdul Majid, Ihab Rizk, Yasser Al Hamidi, Nesrin Ozalp

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

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.

Original languageEnglish (US)
Title of host publicationDesign and Manufacturing
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages305-319
Number of pages15
ISBN (Print)9780791854891
DOIs
StatePublished - Jan 1 2011
EventASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States
Duration: Nov 11 2011Nov 17 2011

Publication series

NameASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Volume3

Other

OtherASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
CountryUnited States
CityDenver, CO
Period11/11/1111/17/11

Keywords

  • Aperture
  • Dynamic controller
  • Iris mechanism
  • Sensor
  • Solar reactor

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