Browsing by Author "Walker, Gregg Stuart"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Development of a low cost linear fresnel solar concentrator
    (Stellenbosch : Stellenbosch University, 2013-12) Walker, Gregg Stuart; Von Backstrom, T. W.; Gauche, Paul; Stellenbosch University. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering.
    ENGLISH ABSTRACT: This study describes the design and construction of a low-cost linear Fresnel solar concentrator. Ray-trace simulation models that analyse optical performance were developed and then used to perform sensitivity analyses of various characteristics of linear Fresnel concentrators. The design of a small-scale concentrator was optimised using the simulation models, after which the concentrator was constructed in the solar laboratory. The concentrator consists of a single-motor tracking system, flat primary mirrors and a low-cost secondary concentrator that approximates a compound parabolic concentrator. Testing revealed satisfactory performance that was comparable to the simulation models’ prediction. The construction of a low-cost solar concentrator that can replace existing thermal sources for the generation of power and process heat is thus achievable.