A new rotatable-axis tracking solar parabolic-trough collector for solar-hybrid coal-fired power plants

被引：43

作者：

Peng, Shuo ^{[1
,2
]}

Hong, Hui ^{[1
]}

Jin, Hongguang ^{[1
]}

Zhang, Zhineng ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Sinogold New Energy Technol Co, Beijing 100080, Peoples R China

来源：

SOLAR ENERGY | 2013年 / 98卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Solar-hybrid coal-fired power plant; Rotatable-axis tracking; Cosine loss; INTEGRATION; GENERATION; HEAT;

D O I：

10.1016/j.solener.2013.09.039

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A solar-hybrid coal-fired power plant can use solar heat at <300 degrees C to replace steam extracted from a turbine to heat feed water. Through this process, the steam to be extracted can efficiently expand in the steam turbine to generate electricity. The advantages of a solar-hybrid coal-fired power plant in terms of design have been discussed by many researchers. However, solar-field performance under varied solar irradiation intensities has not yet been elucidated. In this study, a rotatable-axis tracking parabolic-trough collector was proposed by utilizing a partial rotatable device to drive the parabolic-trough collector. Energy losses (including cosine, end, and lateral shading losses) on four typical days were evaluated and compared with single-axis tracking method. The importance of improving the solar-field efficiency of rotatable-axis tracking system was discussed. Consequently, the solar-field area of a solar-hybrid coal-fired power plant would decreased by 4% if the rotatable-axis tracking system was utilized. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：492 / 502

页数：11

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