论文部分内容阅读
为科学地确定日光温室的合理结构,对鞍山、北京、天津等地建造使用的两类日光温室进行了墙体、前屋面覆盖物温度观测,结果表明:塑料膜日光温室夜间的主要放热面仍是前屋面,尽管前屋面薄膜上覆盖有纸被、草苫等,室内气温与覆盖物内侧温差仍十分显著地大于室内气温与墙体内侧温差。墙体系土墙者,全天为“吸热体”;系有空心夹层砖墙者,则在温室升温阶段为“吸热体”,在降温阶段为“放热体”。测量还发现,这两种墙体内均存在一个温度变化比较恒定的中间层,其机理有待进一步研究。经测定分析认为,日光温室较理想的墙体结构是:内侧由吸热、蓄热较好材料组成蓄热层,外侧由导热,放热较差材料组成保温层,中间设隔热层。
In order to scientifically determine the reasonable structure of solar greenhouse, the temperature observation of wall and front roof covering of two kinds of solar greenhouse constructed and used in Anshan, Beijing and Tianjin was carried out. The results showed that the main exothermic surface The front roof is still the front. Although the front roofing membrane is covered with paper sheets, straw bream, etc., the temperature difference between the indoor air temperature and the inner side of the covering is still significantly larger than the indoor air temperature and the temperature difference inside the wall. Wall system of soil wall, all day as “heat sink”; Department of hollow sandwich brick wall, then in the greenhouse warming stage as “endothermic body”, in the cooling stage for the “heat body.” Measurement also found that there is a temperature in both walls there is a constant change in the middle layer, the mechanism remains to be further studied. The analysis shows that the solar greenhouse ideal wall structure is: inside by the endothermic, thermal storage materials are better thermal storage layer, the outer side by the thermal conductivity, poor heat dissipation materials composed of insulation, the middle insulation layer.