多孔毛管温室冠层空间热风增温实验  

Hot Blast Heating Experiment in Greenhouse Canopy Based on Porous Pipes

作　　者：王新坤[1] 许颖[1] 夏立平[1] 高世凯[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,镇江212013

出　　处：《农业机械学报》2012年第4期168-172,161,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA100211);江苏大学江苏省现代农业装备与技术重点实验室开放基金资助项目(NZ200808)

摘　　要：为研究微孔散热条件下,多孔毛管沿程温度分布规律、温室冠层以下空间的垂直温度梯度及其与主要影响因素之间的关系,构建了多孔毛管温室空间热风增温实验系统。对多孔毛管进行保温围护,以毛管进口温度、进风压力、出风孔径等为实验参数,采集毛管前端孔口、中间孔口与末端孔口围护空间内温度数据,分析其在毛管沿程方向上和垂直空间内的分布规律。实验结果表明,毛管沿程出风孔口围护空间温升略有降低;垂直空间内温升呈先上升后下降的驼峰状变化趋势。不同进口温度、进风压力条件下,构建的热风增温系统可以使围护空间内距地面800～1 200 mm高度空间内的温度升高2.5～6.2℃。In order to study the temperature distribution along the porous pipes,the vertical temperature gradient in space below greenhouse canopy and the relation between temperature gradient and its main influencing factors on the basis of heat dissipation of pores,the heating system of greenhouse canopy with hot blast based on porous pipes was established with inlet temperature,inlet pressure and diameter of outlet as the experimental factors. Through thermal insulating porous pipes,the temperature of the front outlets,middle outlets and end outlets of porous pipes and its distribution in vertical space were measured.The results showed that the outlet temperature decreased along the porous pipes,while the temperature in vertical space decreased after an increasing trend.Under different inlet temperatures and inlet pressures,the temperature in 800～1 200 mm height space of thermal insulated room rose 2.5～6.2℃.

关 键 词：温室能耗 多孔毛管 温室冠层 热风增温 

分 类 号：S625.51[农业科学—园艺学]