Tuning the extinction coefficient for direct absorption solar thermal collector optimization

Todd P. Otanicar, Patrick Phelan, Robert A. Taylor, Himanshu Tyagi

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

6 Scopus citations

Abstract

Direct-absorption solar thermal collectors have recently been shown to be a promising technology for photothermal energy conversion but many parameters affecting the overall performance of such systems haven't been studied in depth, yet alone optimized. Earlier work has shown that the overall magnitude of the extinction coefficient can play a drastic role, with too high of an extinction coefficient actually reducing the efficiency. This study investigates how the extinction coefficient impacts the collector efficiency and how it can be tuned as a function of depth to optimize the efficiency, and why this presents a unique design over conventional solar thermal collection systems. Three extinction profiles are investigated: uniform, linearly increasing, and exponentially increasing.

Original languageEnglish (US)
Title of host publicationASME 2010 4th International Conference on Energy Sustainability, ES 2010
Pages819-824
Number of pages6
DOIs
StatePublished - Dec 1 2010
EventASME 2010 4th International Conference on Energy Sustainability, ES 2010 - Phoenix, AZ, United States
Duration: May 17 2010May 22 2010

Publication series

NameASME 2010 4th International Conference on Energy Sustainability, ES 2010
Volume1

Other

OtherASME 2010 4th International Conference on Energy Sustainability, ES 2010
CountryUnited States
CityPhoenix, AZ
Period5/17/105/22/10

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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