Absorber design for a Scheffler-Type Solar Concentrator

作者：Ruelas Jose^*; Palomares Juan; Pando Gabriel

来源：Applied Energy, 2015, 154: 35-39.

DOI：10.1016/j.apenergy.2015.04.107

• Solar concentrator
• Stirling receiver
• Monte-Carlo ray tracing
• Photogrammetry

Ray tracing software, digital close range photogrammetry and the Monte-Carlo ray-tracing method have proven to be precise and efficient measurement techniques for the assessment of the shape accuracies of solar concentrators and their components. This paper presents a new method and results for the geometric aspect of a focal image for a Scheffler-Type Solar Concentrator (STSC) using ray tracing, digital close range photogrammetry and the Monte-Carlo ray-tracing method to establish parameters that allow for the design of the most suitable absorber and receiver geometry for coupling the STSC to a Stirling engine. The results of the ray tracing software, digital close range photogrammetry and Monte-Carlo ray tracing technique in STSC are associated with a Stirling receiver. When using the method to perform simulations, we found that the most suitable solar image geometry has an elliptical shape and area of 0.0065 m(2) on average. Although this result is appropriate, the geometry of the receiver is modified to fit an absorber and cavity receiver to improve the heat transfer by radiation.

• 出版日期2015-9-15