Journal of Solar Energy Research

Linear Fresnel Solar Collectors for Heat Generation: An Overview of Existing Prototypes

Document Type : Review Article

Authors

1 Department of Mechanical Engineering, UPL University of Sustainable Technology, Ankleshwar, India – 393135

2 Silver Oak College of Engineering and Technology, Ahmedabad, India – 380054

Abstract

A linear Fresnel collector (LFC) is categorized as a line focus collector, which is geometrically simple and converts beam radiation into heat energy. In this article, the introduction of concentrating solar power technology is first explained, covering the aspects of LFC technology and its historical development. The LFC operative projects globally are presented to show that the LFC technologies are technically and commercially proven to generate heat energy. The existing LFC prototypes are then illustrated using actual images and important results. Most prototypes obtained collector efficiencies ranging from 12% to 82%, and operating temperature difference spans from 5°C to 90°C. A broad range of improvements, including mirror arrangements, design of reflectors, absorber tube designs, cavity receivers, vacuum tubes, selective coatings, and secondary concentrators is reported. Along with detailed geometrical specifications, advancements are enlightened to demonstrate the progress and present state of LFC. This study provides a complete overview of the LFC prototypes and their progress, which offers practical support to future researchers.

Keywords

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Journal of Solar Energy Research
Volume 10, Issue 2
April 2025
Pages 2316-2334