基于热交换的漂浮育苗温室除湿系统研究

基于热力学第二定律,设计了热交换式漂浮育苗温室保温除湿系统。该系统主要由热交换换气机和环境监控系统组成,通过将温室大棚外新风与棚内空气强制对流交换进行换气除湿,使新风温度升高,实现温室热能回收。环境监控系统可现场和远程了解温室大棚内部环境和除湿系统工作状态,实时自动对温室湿度进行调控。将系统应用于烟草漂浮育苗温室,运行结果表明,系统具有良好的保温、除湿能力,试验大棚较对照大棚平均相对湿度降低6.7%,系统平均热回收效率为59.35%,烟苗平均茎高增加0.4 mm、茎围增加0.6 mm。

Study on dehumidification system of floating seedling greenhouse based on heat-exchange

Based on the second law of thermodynamics, a heat exchanging dehumidification system was designed. It mainly composed of a hot-swappable ventilator and an environmental monitoring system. The goal of greenhouse heat recovery was achieved by forced convection of the fresh air outside the greenhouse and the air in the greenhouse to lower the humidity, and increasing the temperature of fresh air by heat exchanging. The parameters of internal environment of greenhouse and working state of dehumidification system could be acquired remotely by the monitoring and control system, and the humidity of the greenhouse could be regulated real-time. This system was applied to the greenhouse of tobacco floating-seedling system, results showed that the heat exchanging dehumidification system had good performance of dehumidification. Compared to the normal greenhouse, the average humidity of experimental greenhouse with the average rate of heat recovery of 59.35% decreased 6.7% with an average increase in stem height stem of 0.4 mm and stem diameter of 0.6 mm.