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太阳能腔式吸热器表面反射率的选择 被引量：1

Selection of Surface Reflectivity for a Solar Cavity Receiver
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摘要 由于开口处阳光能流密度的不均匀分布以及阳光的单侧投射使得太阳能腔式吸热器内部吸热管表面的热流密度分布呈现出高度得不均匀性,严重影响吸热器运行的安全可靠性。采用建立的耦合计算模型对一个饱和蒸汽太阳能腔式吸热器的热性能进行了数值模拟,提出了一种沸腾管表面反射率的优化分布方式,从而改善了吸热器内部沸腾管表面热流密度和温度分布的不均匀性. The heat flux distribution on the surface of absorber tubes inside the solar cavity receiver usually appears highly non-uniform due to the non-uniform input solar flux in the aperture.It seriously affects the safe operation of the receiver.The thermal performance of a saturated water/steam solar cavity receiver was numerically simulated by using the combined calculation model.An optimizing distribution way of surface reflectivity for the boiling tubes inside the cavity was raised.By adopting this selection method,the uniformity of heat flux and wall temperature on the surface of boiling tubes was improved.
作者 屠楠 魏进家 方嘉宾
机构地区 西安交通大学动力工程多相流国家重点实验室
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2014年第4期700-704,共5页 Journal of Engineering Thermophysics
基金 国家重点基础研究发展计划项目(No.2010CB227102) 高等学校博士学科点专项科研基金课题资助(No.20130201110043)
关键词 腔式吸热器 非均匀 表面反射率 热流密度分布 cavity receiver non-uniform surface reflectivity heat flux distribution
分类号 TM615.1 [电气工程—电力系统及自动化]
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参考文献4

  • 1崔福庆,何雅玲,李东,陶于兵,程泽东.塔式吸热器中辐射传播过程的参数分析[J].工程热物理学报,2011,32(8):1375-1378. 被引量：2
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二级参考文献6

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共引文献3

同被引文献12

  • 1Mao Q J, Xie M, Tan H P. Effects of material selec- tion on the radiation flux of tube receiver in a dish solar system [J]. Heat Transfer Research ,2014 ,g5 (4) :339 - 347.
  • 2Cheng Z D, He Y L, Xiao J, Cui F Q, Du B C, Zheng Z J, Xu Y. Comparative and sensitive analysis for parabolic trough solar collectors with a detailed Monte Carlo ray -tracing optical model[J]. Appl. Energy,2014(115) :559 -572.
  • 3Wang F Q, Shuai Y, Yuan Y, Yang G, Tan H P. Ther- mal stress analysis of eccentric tube receiver using concentrated so- lar radiation [J]. Solar Energy ,2010,85 (10) : 1809 - 1815.
  • 4Verlotski V, Schaus M, Pohl M. A solar thermal mgo- powder receiver with working temperatures of more than 1600℃ : model investigation by using laser as an irradiation source [J]. Solar Energy Materials and Solar Cells,1997,45(3) :227 -239.
  • 5Flares V C, Almanza R F. Behavior of compound wall copper - steel receiver with stratified two - phase flow regimen in transient states when solar irradiance is arriving on one side of receiver[J]. Solar Energy,2004(76) : 195 - 198.
  • 6Lata J M, Rodriguez M A, Lara M A. High flux cen- tral receivers of molten salts for the new generation of commer- cial stand - alone solar power plants[J]. Journal of Solar Energy Engineering, 2008 (130) :0211002.
  • 7Kumar N S, Reddy K S. Thermal analysis of solar par- abolic collector with porous disc receiver[J]. Applied Energy, 2009 (86) : 1804 - 1812.
  • 8Wang F Q, Shuai Y,Yuan Y, Liu B. Effects of mate- rial selection on the thermal stresses of tube receiver under con- centrated solar irradiation [J]. Materials and Design, 2012 ( 33 ) :.284 - 291.
  • 9Wang F Q, Shuai Y, Tan H P,Lin R Y, Cheng P, Re- searches on a new type of solar surface cladding reactor with con- centration quartz window[J]. Solar Energy,2013(94) :177 -181.
  • 10Dai G L, Xia X L, Hou G F. Transmission perform- ances of solar windows exposed to concentrated sunlight [J]. So- lar Energy,2014 ( 103 ) : 125 - 133.

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工程热物理学报
2014年 第4期

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