摘要
为了给现代温室湿帘风机降温系统的科学设计和有效运行提供依据,从系统特性、实际降温效果、理论温度分布以及相应温室适宜长度等方面对其进行了研究。通过文献分析,对比了目前常用的另外一种蒸发降温方式—细雾降温系统,阐述了湿帘风机降温系统在安装、管理、维护、用水效率、降温效果以及植物安全生产性等方面存在的优势。通过对北京、上海和日本爱知县现代生产性温室的试验测试,证实了这一降温系统的实际降温效果,即3栋温室平均降温幅度分别达3.6℃,2.7℃和2.3℃,很好地保证了温室夏季生产的正常进行。通过模型计算,进一步探讨了湿帘风机降温温室在不同温度、湿度、太阳辐射以及室内气流速度情况下可能出现的温度分布,分析了不同条件下温室可能的最大适宜长度,为该降温系统的设计提供了参考。
For designing and effective operation and management of pad and tan cooling system in modern greenhouse, a research has been made in this paper on systemic characteristics, actual cooling effects, theoretic temperature distributions and relevant feasible length of greenhouses with pad and fan cooling system. Compared with fogging cooling system, which is also common today, pad and fan cooling system has obvious advantages on installing, management, maintenance, water efficiency, cooling effects, safety for crop production and so on. Tests were made in three large-scale production greenhouses in Beijing, Shanghai and Aichi of Japan, which obviously showed pad and fan cooling system had actually cooling effects. The average temperature dropped 3.6℃, 2.7℃and 2.3℃ respectively, which commendably assured that the greenhouses operation was normal in summer. By a mathematical model, temperature distributions of greenhouse with pad and fan cooling system was analyzed at different outside temperature, humidity, radiation and inside airflow velocity. Feasible length of greenhouse at different meteorological conditions was also discussed, which provided a reference for designing of such cooling system.
出处
《农机化研究》
北大核心
2007年第9期147-152,157,共7页
Journal of Agricultural Mechanization Research
基金
北京市教育委员会共建项目建设计划资助(XK100190550
2005)
关键词
园艺学
湿帘风机降温系统
试验
现代温室
测试
模型
gardening
pad and fan cooling system
experiment
modem greenhouse
measurement
model
