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为研究寒冷干旱地区日光温室在自然通风时内拱膜结构对室内温度的影响,对呼和浩特市农户日常生产使用的日光温室内部气温进行多点实时测试,并利用多峰拟合法对不同内拱膜竖直高度下的室内气温进行分析。结果表明:在00:00~08:00时段,日光温室内拱膜竖直高度越高,室内气温沿跨度方向温差越大,而在10:00~15:00的通风时段,内拱膜竖直高度越高,室内气温沿跨度方向的温差越小。在通风时段,试验温室Ⅰ、Ⅱ内距地面2.5m高处的气温最高,1.3m高处的气温最低,且试验温室Ⅱ内不同高度处的气温均高于试验温室Ⅰ,而对照温室内距地面2.5m高处的气温最高,0.1m高处的气温最低。多峰拟合的最小拟合度为0.960 2,拟合分析表明,内拱膜竖直高度越高,相同时段内室内平均气温越高。
In order to study the influence of the arch structure on the indoor temperature in the solar greenhouse in the cold and arid areas under natural ventilation, real-time multi-point temperature measurement was conducted on the daily temperature inside the greenhouse for daily production of farmers in Hohhot. Multi-peak fitting Indoor temperature at vertical height is analyzed. The results showed that the vertical height of the dome in solar greenhouse was higher from 00:00 to 08:00, and the temperature difference along the span direction was larger in the greenhouse. In the ventilation period from 10:00 to 15:00, The higher the straight height, the smaller the temperature difference of the indoor air temperature along the span direction. During the ventilation period, the air temperature was the highest in the test greenhouse Ⅰ and Ⅱ 2.5m above the ground, and the temperature was the lowest at the height 1.3m. The air temperature at different heights in the test greenhouse Ⅱ was higher than that in the test greenhouse Ⅰ, The highest temperature of 2.5m above the ground, the lowest temperature of 0.1m. The minimum fitting degree of multi-peak fitting is 0.960 2. The fitting analysis shows that the higher the vertical height of the inner arch, the higher the average indoor temperature in the same time.