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温室内多孔蓄热墙传热与流动特性
引用本文:欧阳莉,刘伟.温室内多孔蓄热墙传热与流动特性[J].工程热物理学报,2008,29(2):284-286.
作者姓名:欧阳莉  刘伟
作者单位:华中科技大学能源与动力工程学院,湖北武汉,430074
摘    要:本文采用一维稳态饱和多孔介质能量双方程模型,对温室内多孔蓄热墙的传热与流动特性进行了研究.结果表明:多孔蓄热墙的固体骨架与空气之间的换热取决于空气的入口流速、多孔材料的孔隙率、渗透率和固体骨架的导热系数,由于多孔蓄热墙接受的太阳辐照是不均匀的,因此推荐采用具有不同孔隙率的新型复合多孔蓄热墙,以减少这种不利的影响.

关 键 词:温室  多孔蓄热墙  流动与传热  温室  多孔材料  蓄热  传热与流动特性  GREENHOUSE  WALL  POROUS  HEAT  TRANSFER  CHARACTERISTICS  影响  均匀  太阳辐照  导热系数  渗透率  孔隙率  流速  换热  空气  骨架  固体  结果
文章编号:0253-231X(2008)02-0284-03
修稿时间:2007年12月9日

FLOW AND HEAT TRANSFER CHARACTERISTICS OF POROUS HEAT-STORAGE WALL IN GREENHOUSE
OU-YANG Li,LIU Wei.FLOW AND HEAT TRANSFER CHARACTERISTICS OF POROUS HEAT-STORAGE WALL IN GREENHOUSE[J].Journal of Engineering Thermophysics,2008,29(2):284-286.
Authors:OU-YANG Li  LIU Wei
Abstract:Flow and heat transfer characteristics of porous heat- storage wall in greenhouse are studied using the one-dimensional steady energy two-equation model for saturated porous medium.Results show that the heat exchange between air and the solid matrix of porous heat-storage wall depends upon the inlet air velocity,the porosity and permeability of porous medium,the thermal conductivity of solid matrix.Because the incidence of solar radiation on the porous heat- storage wall is not uniform, the new composite porous solar wall with different porosity is proposed to reduce the disadvantageous effect.
Keywords:greenhouse  porous heat-storage wall  flow and heat transfer
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