天津地区典型砖后墙日光温室剖面热通量日变化特征  

Diurnal variations characteristics of heat flux in cross-section of typical brick wall in solar greenhouse in Tianjin area

作　　者：李春[1] 薛庆禹[1] 宫志宏[1] 郭晶[1] 董朝阳[1] 刘淑梅[1] 

机构地区：[1]天津市气候中心,天津300074

出　　处：《气象与环境学报》2016年第6期137-141,共5页Journal of Meteorology and Environment

基　　金：公益性行业(气象)科研专项"华北日光温室小气候资源高效利用技术研究"(GYHY201306039);天津市气象局科研项目"基于Trnsys的日光温室温度环境数值模拟"(201416)共同资助

摘　　要：利用2012年冬季天津地区日光温室热通量的观测资料,分析了典型砖后墙日光温室的覆盖面、墙体和土壤3个围护面的热通量日变化特征。结果表明:2012年冬季天津地区典型砖后墙日光温室土壤中部和后墙上方观测点的平均热通量呈明显的单峰型日变化,后墙下方和土壤前部观测点的热通量全天均为5.0—10.0 W·m-2,后屋面观测点热通量的日变化规律与土壤中部和后墙上方观测点相反,各观测点热通量日变化规律在典型晴天时尤其明显,但典型连阴天时各测点热通量的昼夜变化基本较小。分析表明,天津地区典型砖后墙日光温室的墙体和土壤为主要的蓄热放热区,前后屋面及各围护结构的结合处为主要的散热区域,各观测点晴天和阴天热通量日变化的差异明显,生产上可根据热通量的变化规律对日光温室进行保温性能改造。In order to analyze the heat flux variation characteristics of solar greenhouse with brick wall, an experi- ment was carded out at Tianjin in winter of 2012 to measure the heat flux on ceiling ,north wall, and soil. The re- sults show that heat flux variations of the two monitoring points, situated at the north of soil and the top of the back wall, display a single-peak pattern. The heat fluxes of the two monitoring points, situated at the south of soil and the bottom of the back wall, are between 5.0 and 10. 0 W. m2 for a day. The diurnal variation characteristic of heat flux is especially distinct during the day with sunshine, while the amplitudes of heat flux during the continuous cloudy days is relatively small. The results suggest that soil and wall are the main areas for heat storage and heat release and the ceiling and the combine places of each enclosing structures are the areas for heat release. According to the variation rules of heat flux, the heat preservation performance of greenhouse could be improved for better greenhouse production.

关 键 词：砖后墙日光温室 热通量 典型天气 日变化 

分 类 号：P49[天文地球—大气科学及气象学] S625.1[农业科学—园艺学]