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Title: A new code for the design and analysis of the heliostat field layout for power tower system

Abstract

A new code for the design and analysis of the heliostat field layout for power tower system is developed. In the new code, a new method for the heliostat field layout is proposed based on the edge ray principle of nonimaging optics. The heliostat field boundary is constrained by the tower height, the receiver tilt angle and size and the heliostat efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency. With the new method, the heliostat can be placed with a higher efficiency and a faster response speed of the design and optimization can be obtained. A new module for the analysis of the aspherical heliostat is created in the new code. A new toroidal heliostat field is designed and analyzed by using the new code. Compared with the spherical heliostat, the solar image radius of the field is reduced by about 30% by using the toroidal heliostat if the mirror shape and the tracking are ideal. In addition, to maximize the utilization of land, suitable crops can be considered to be planted under heliostats. To evaluate the feasibility of the crop growth, a method for calculating the annual distribution of sunshinemore » duration on the land surface is developed as well. (author)« less

Authors:
; ;  [1];  [2]
  1. Changchun Institute of Optics, Fine Mechanics and Physics of Chinese Academy of Sciences, Changchun 130033 (China)
  2. The Key Laboratory of Solar Thermal Energy and Photovoltaic system, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
21305751
Resource Type:
Journal Article
Journal Name:
Solar Energy
Additional Journal Information:
Journal Volume: 84; Journal Issue: 4; Conference: International Conference CISBAT 2007; Other Information: Elsevier Ltd. All rights reserved; Journal ID: ISSN 0038-092X
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; DESIGN; EFFICIENCY; HELIOSTATS; SPHERICAL CONFIGURATION; CROPS; HEIGHT; DISTRIBUTION; GROWTH; IMAGES; MIRRORS; OPTIMIZATION; SHAPE; SURFACES; SIZE; FEASIBILITY STUDIES; TOWER FOCUS POWER PLANTS; COMPUTER CODES; Nonimaging optics; Aspherical heliostats; Edge ray principle

Citation Formats

Wei, Xiudong, Lu, Zhenwu, Yu, Weixing, and Wang, Zhifeng. A new code for the design and analysis of the heliostat field layout for power tower system. United States: N. p., 2010. Web. doi:10.1016/J.SOLENER.2010.01.020.
Wei, Xiudong, Lu, Zhenwu, Yu, Weixing, & Wang, Zhifeng. A new code for the design and analysis of the heliostat field layout for power tower system. United States. https://doi.org/10.1016/J.SOLENER.2010.01.020
Wei, Xiudong, Lu, Zhenwu, Yu, Weixing, and Wang, Zhifeng. Thu . "A new code for the design and analysis of the heliostat field layout for power tower system". United States. https://doi.org/10.1016/J.SOLENER.2010.01.020.
@article{osti_21305751,
title = {A new code for the design and analysis of the heliostat field layout for power tower system},
author = {Wei, Xiudong and Lu, Zhenwu and Yu, Weixing and Wang, Zhifeng},
abstractNote = {A new code for the design and analysis of the heliostat field layout for power tower system is developed. In the new code, a new method for the heliostat field layout is proposed based on the edge ray principle of nonimaging optics. The heliostat field boundary is constrained by the tower height, the receiver tilt angle and size and the heliostat efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency. With the new method, the heliostat can be placed with a higher efficiency and a faster response speed of the design and optimization can be obtained. A new module for the analysis of the aspherical heliostat is created in the new code. A new toroidal heliostat field is designed and analyzed by using the new code. Compared with the spherical heliostat, the solar image radius of the field is reduced by about 30% by using the toroidal heliostat if the mirror shape and the tracking are ideal. In addition, to maximize the utilization of land, suitable crops can be considered to be planted under heliostats. To evaluate the feasibility of the crop growth, a method for calculating the annual distribution of sunshine duration on the land surface is developed as well. (author)},
doi = {10.1016/J.SOLENER.2010.01.020},
url = {https://www.osti.gov/biblio/21305751}, journal = {Solar Energy},
issn = {0038-092X},
number = 4,
volume = 84,
place = {United States},
year = {2010},
month = {4}
}