聚光型太阳能热发电系统非均匀辐射能流特性及解决方法的研究进展

被引:53
作者
何雅玲
王坤
杜保存
邱羽
郑章靖
梁奇
机构
[1] 西安交通大学热流科学与工程教育部重点实验室
基金
国家自然科学基金重点项目;
关键词
聚光型太阳能热发电; 非均匀能流分布; 聚光集热; 光热匹配;
D O I
暂无
中图分类号
TM615 [太阳能发电];
学科分类号
0807 ;
摘要
分别对槽式、线性菲涅尔式、塔式、碟式4种聚光型太阳能热发电技术中的聚光集热系统内非均匀辐射能流分布特性及由此带来的问题和挑战进行了总结,重点回顾了针对非均匀辐射能流特性带来的问题所提出的解决方法的研究进展,包括作者团队近年来在该方面的相关研究.分析看出,吸热器内的太阳能辐射能流分布表现出强烈的非均匀性,不均匀的辐射能流分布必然造成吸热表面/吸热体内不均匀的温度分布,即出现过高的局部温度、过大的温度梯度.局部温度过高容易造成局部热斑烧毁、吸热涂层性能减退、传热流体变性劣化;温度梯度过大导致出现热应力热变形,容易造成吸热器关键部件的结构失稳破坏.接着指出,非均匀的能流分布之所以给聚光集热系统带来诸多挑战,其根源在于吸热器内均匀的吸热能力与吸热表面/吸热体内非均匀的能流分布之间不能相互匹配,进而导致吸热表面/吸热体出现不均匀的温度分布.据此,作者将现有的解决方法总结分类为两种途径:(1)优化吸热器的"吸热"能力,使之与非均匀分布的太阳能流相匹配;(2)均化"聚光"系统内吸热表面/吸热体内的太阳能流分布,使之吸热器内均匀的吸热能力相匹配.最后,本文提出了解决聚光集热系统内非均匀能流特性问题的思路:需要从"聚光"与"吸热"不匹配的矛盾入手,以"光热匹配"为原则对聚光集热系统进行优化,提高"聚光"过程与"吸热"过程的协同性.
引用
收藏
页码:3208 / 3237+3289 +3289-3290
页数:32
相关论文
共 88 条
[11]  
A comprehensive model for optical and thermal characterization of a linear Fresnel solar reflector with a trapezoidal cavity receiver[J] . Yu Qiu,Ya-Ling He,Ming Wu,Zhang-Jing Zheng.Renewable Energy . 2016
[12]  
Analysis of thermal stress and fatigue fracture for the solar tower molten salt receiver[J] . Bao-Cun Du,Ya-Ling He,Zhang-Jing Zheng,Ze-Dong Cheng.Applied Thermal Engineering . 2016
[13]  
A novel integrated simulation approach couples MCRT and Gebhart methods to simulate solar radiation transfer in a solar power tower system with a cavity receiver[J] . Kun Wang,Ya-Ling He,Yu Qiu,Yuwen Zhang.Renewable Energy . 2016
[14]  
Parabolic trough collector or linear Fresnel collector? A comparison of optical features including thermal quality based on commercial solutions[J] . R. Abbas,M.J. Montes,A. Rovira,J.M. Martínez-Val.Solar Energy . 2016
[15]  
Thermal analysis of solar central receiver tube with porous inserts and non-uniform heat flux[J] . Zhang-Jing Zheng,Ming-Jia Li,Ya-Ling He.Applied Energy . 2015
[16]  
Optimization of porous insert configurations for heat transfer enhancement in tubes based on genetic algorithm and CFD[J] . Zhang-Jing Zheng,Ming-Jia Li,Ya-Ling He.International Journal of Heat and Mass Transfer . 2015
[17]  
Study on optical and thermal performance of a linear Fresnel solar reflector using molten salt as HTF with MCRT and FVM methods[J] . Yu Qiu,Ya-Ling He,Ze-Dong Cheng,Kun Wang.Applied Energy . 2015
[18]  
Numerical investigation on uniformity of heat flux for semi-gray surfaces inside a solar cavity receiver[J] . Nan Tu,Jinjia Wei,Jiabin Fang.Solar Energy . 2015
[19]  
Solar flux distribution on central receivers: A projection method from analytic function[J] . Alberto Sánchez-González,Domingo Santana.Renewable Energy . 2015
[20]  
Experimental and numerical heat transfer analysis of a V-cavity absorber for linear parabolic trough solar collector[J] . X. Xiao,P. Zhang,D.D. Shao,M. Li.Energy Conversion and Management . 2014