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通过对基于多孔毛管的温室热风采暖试验系统增温过程的研究,验证了该系统的实际增温效果.以多孔毛管进口温度、进口压力、出风孔径等试验因素,对多孔毛管进行保温围护,测量围护空间内温升数据,对不同试验因素条件下的热风增温过程进行试验分析.采用多项式回归方法对试验数据进行分析和计算,得出了围护空间内温升与毛管进口温度以及进口压力之间的数学关系.试验结果表明:不同毛管进口温度以及进口压力条件下,该热风增温系统可以使围护空间内温度升高4～9℃,且温升大小与多孔毛管进口温度和进口压力之间均为正相关关系,相对于进口温度,多孔毛管进口压力为围护空间内温升大小的主要影响因素.利用由多项式回归方法分析和计算得出的数学关系设定毛管进口温度和进口压力的大小,多孔毛管温室热风采暖系统可以满足温室冬季生产的实际增温需求.
The actual heating effect of this system was verified by the study of the heating process of hot air heating system based on porous capillary in the paper.The perforated capillary tube was insulated and protected by experimental factors such as inlet temperature of porous capillary, inlet pressure and outlet aperture, , The temperature rise data in the enclosure space was measured and the hot air temperature increase process under different experimental conditions was analyzed and analyzed.The experimental data were analyzed and calculated by the polynomial regression method.The temperature rise in the enclosure space and the capillary inlet temperature As well as the mathematical relationship between the inlet pressure.The experimental results show that under different capillary inlet temperature and inlet pressure conditions, the hot-air warming system can increase the temperature in the enclosure space by 4-9 ° C, and the temperature rise and porous capillary inlet There is a positive correlation between temperature and inlet pressure, and the inlet pressure of porous capillary is the main influencing factor of the temperature rise in enclosure space relative to the inlet temperature.The capillary is set by the mathematical relationship analyzed and calculated by the polynomial regression method Import temperature and the size of the inlet pressure, porous capillary greenhouse hot air heating system can meet the actual greenhouse production in winter Temperature requirements.