荷兰Venlo型连栋温室夏季自然通风降温系统的试验研究

针对我国气候条件下，大型连栋温室夏季自然通风降温效果差，而机械通风降温成本较高的问题，对采用自然通风并结合遮阳网、室外屋顶喷淋降温措施的荷兰引进Venlo型玻璃温室的室内温湿度状况进行了测试。结果表明：连栋温室室内空气温度明显低于室外，且室内温湿度分布比较均匀，能够满足作物生长需求。室外屋顶喷淋的降温效果显著，而且未造成温室内湿度显著增加。这种自然通风降温系统的能耗小，在中原地区使用可以达到温室降温和降低温室夏季生产成本的双重目的。

Experimental Research on Cooling Effect of Natural Ventilation in a Venlo-type Multi-span Greenhouse

Cooling effect of natural ventilation together with shading, roof sprinkling in a Venlo type multi span greenhouse was studied. The experiments were conducted in Venlo type glasshouse in Puyang city, Henan province, in July, 2001. The experimental data showed that the air temperature inside greenhouse was lower than outside when applied the natural ventilation cooling system, and the distributions of air temperature and relative humidity in the greenhouse were uniform. The roof sprinkling played an important role in the cooling system, and did not enhance the humidity of the greenhouse very much. The energy consumption in the greenhouse was reduced greatly in summer. This kind of natural ventilation cooling system could effectively reduce the air temperature and the energy consumption in multi span greenhouse in China.