期刊
2013 ISES SOLAR WORLD CONGRESS
卷 57, 期 -, 页码 1508-1515出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.egypro.2014.10.143
关键词
sun tracking; solar angle; ray tracing
Tracking systems for parabolic troughs are already well designed for industrial processes, but the challenges can be different concerning small-scale low cost systems. Considering cost limitations, some flexibility and error margin on tracking accuracy may be tolerated, due to the imperfections of the parabola or the inaccuracy of the tracking. The objective of this study is to compute the efficiency losses when changing the sun rays incident angles and conclude about the error margin tolerable for a small-scale parabolic trough. Starting from an ideal case, the evolution of the trough efficiency regarding the tracking angle is observed in the plane perpendicular to the axis of a polar mounted trough. A ray tracer is used to simulate the illumination of the absorber. A simplified model for representing the angles of rays from the sun is suggested to take account of all the rays not being parallel. (C) 2014 The Authors. Published by Elsevier Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据