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以青海西宁地区典型日光温室为研究对象,冬季最冷时段测试和分析了该类型温室梯形土质墙体温度分布及内外表面热通量,研究了日光温室墙体温度变化规律及墙体吸放热特征,以期为合理分析评价墙体保温蓄热性能及构建墙体传热模型提供理论依据。结果表明:墙体在垂直方向温度变化差异不大;厚度方向上墙体内表面测点温度波动较大,晴天日变化幅度达到26.07℃,阴天为8.6~11.6℃。墙体在晴天吸收的总热量为687.84 W/m2,阴1d、阴2d以释放热量为主,向室内释放的总热量分别为640.59W/m2和1 106.99W/m2;墙体外表面在典型天气条件下均向室外释放热量,分别为984.70、1 785.13、1 866.55W/m2。
Taking a typical solar greenhouse in Xining, Qinghai Province as the research object, the temperature distribution and internal and external heat fluxes of this type of greenhouse trapezoidal soil wall were tested and analyzed at the coldest time in winter. The law of the temperature change of solar greenhouse wall and the exothermic heat absorption Characteristics, in order to provide a theoretical basis for a reasonable analysis of evaluation of wall thermal insulation properties and building wall heat transfer model. The results show that there is not much difference in the vertical temperature between the wall and the wall, and the variation of temperature at the inner surface of the wall in the thickness direction is very large. The daily variation range of sunny day is 26.07 ℃ and the cloudy day is 8.6 ~ 11.6 ℃. The total heat absorbed by the wall in the sunny day was 687.84 W / m2, overcast 1d and overcast 2d to release heat, and the total heat release to the room was 640.59W / m2 and 1 106.99W / m2, respectively; Weather conditions are released to the outdoor heat, respectively, 984.70,1 785.13,1 866.55W / m2.