半地下式自然通风库是我国华北、东北,尤其是辽宁地区水果集中产区的主要贮藏形式。由于库体裸露地面部份隔热较差,采用屋檐窗进气筒导入空气,依靠天窗排热的通风结构,在实际使用过程中往往出现严冬季节温度过低,而秋春季节降温慢而升温快的弊病。因此,造成采后不能及时入库和贮藏期间腐烂损耗高达20%以上的后果。辽宁的大部份地区,10月份的平均气温在8℃—11℃之间,白天温度可高达15℃—17℃,而夜晚气 Semi-underground natural ventilation is China’s North China, northeast, especially in Liaoning concentrated fruit producing areas of the main storage form. Due to the poor insulation on the exposed ground part of the library, the air is introduced into the intake window of the eaves window and the ventilation structure of the exhaust heat of the skylight is used. During the actual use, the temperature is too low in the winter season, Ills As a result, post-harvest can not be timely storage and decay during storage loss up to 20% of the consequences. Most parts of Liaoning, the average temperature in October between 8 ℃ -11 ℃, the daytime temperature can be as high as 15 ℃ -17 ℃, while the night gas