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Journal of Renewable and Sustainable Energy / Volume 3 / Issue 6 / REGULAR ARTICLES

J. Renewable Sustainable Energy 3, 063114 (2011); http://dx.doi.org/10.1063/1.3671649 (11 pages)

Approach to designing a solar concentrator for small-scale remote power application

Khaled Metwally, Ahmed Makhlouf, and Lamyaa El-Gabry

Mechanical Engineering Department, The American University in Cairo, 11511 Cairo, Egypt

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(Received 25 July 2011; accepted 27 November 2011; published online 23 December 2011)

A small-scale concentrated solar power (CSP) unit was designed to provide electricity and hot water using an organic Rankine cycle (ORC) for Egypt as part of an undergraduate capstone project. The system was designed for a target power output of 3 kW. It uses parabolic troughs to heat ethylene glycol used as the heat transfer fluid, which absorbs heat in the trough collector and transfers it to the working fluid through a heat exchanger. The system consists of 9 parabolic troughs and a total aperture area of 67 m2, providing the required 3 kW of energy to the ORC. One parabolic trough was manufactured to test its thermal efficiency according to ASHRAE standard 93-2003 [Methods of Testing to Determine the Thermal Performance of Solar Collectors (ASHRAE, Inc., 1791 Tullie Circle, NE, Atlanta, GA 30329, 2003)] and compared it to its calculated value. A simple microcontroller-based system was used to track the sun.

© 2011 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. DESIGN AND TEST SET-UP
    1. Cycle design
    2. Structure design
    3. Tracking system
    4. Test setup
  3. RESULTS AND DISCUSSION
  4. CONCLUSIONS

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KEYWORDS and PACS

Keywords

heat exchangers, heat transfer, solar absorber-convertors

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3671649

PUBLICATION DATA

ISSN

1941-7012 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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