| 摘要: |
| 针对传统湿帘风机系统存在温湿度不均匀，无法调控冷空气温度；对温室密闭性要求较高，不适用于节能型日光温室等问题，借鉴国外半封闭温室降温方式，对日光温室正压式湿帘风机降温系统结构参数优化与应用效果进行研究。结果表明：最优的湿帘风机系统结构参数为，湿帘厚度150 mm，单位面积水流速4 L/（min·m2），直径50 cm、均匀打孔、孔距20 cm、孔径1 cm、反光膜材料的通风筒；与对照温室相对，此系统最高可降温10℃，室内温度基本全天均低于室外，在距地面1.5 m水平面上各处的温差在2℃以内，湿度差在7%以内，垂直方向上距地面3 m以下的温差在3℃以内。此降温系统能够有效的降低夏季日光温室的温度，且温室各处的温湿度比较均匀，可以为我国节能型日光温室提供有效的夏季降温措施。 |
| 关键词: 日光温室 降温效果 湿帘风机 风筒 冷却效率 温湿度 |
| DOI：10.11841/j.issn.1007-4333.2019.05.16 |
| 分类号: |
| 基金项目:国家重点研发计划项目（2016YFD0201004）；现代农业产业技术体系建设专项资金（CARS-23-C-01） |
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| Design of positive-pressure wet curtain fan system for solar greenhouse and its cooling effects |
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LIU Yunji, XU Jitong, PANG Songruo, SUN Zhouping, LI Tianlai
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College of Horticulture/Key Laboratory of Protected Horticulture of Ministry of Education/National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang Agricultural University, Shenyang 110866, China
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| Abstract: |
| Traditional wet curtain fan systems have disadvantages such as uneven temperature and humidity,inability to regulate cold air temperature,high requirements for greenhouse sealing and is not suitable for solar greenhouses.In this study,learning from the cooling method of next generation semi-enclosed greenhouse abroad,research on the structure optimization and application effects of the positive-pressure wet curtain fan cooling system in solar greenhouses are performed.The results show that the optimal wet curtain fan system parameters is:Wet curtain thickness 150 mm, water flow rate 4 L/(min·m2),50 cm ventilator diameter,uniform perforation,20 cm hole spacing,1 cm aperture,reflective film material;Being different from the control greenhouse,the maximum cooling temperature of the system is 10℃.The indoor temperature is lower than the outdoor during the test.The temperature difference is within 2℃ on 1.5 m above the horizontal.The humidity difference is within 7%,and the temperature difference below 3 m from the ground in the vertical direction is within 3℃.The cooling system can effectively reduce the temperature of the solar greenhouse in summer,and the temperature and humidity in the greenhouse are relatively uniform,which can provide effective summer cooling measures for China's energy-saving solar greenhouses. |
| Key words: solar greenhouse cooling effect wet curtain fan duct cooling efficiency temperature and humidity |
