Research On The Environment Of Temperature And Humidity Influenced By Different Cooling Measure In The Greenhouse Of V96 Model

Along with the development of modern facility agriculture, the environmental control technology of greenhouse rises continuously, but there is also has a series of problem. In summer greenhouse cooling is always one of problem that the masses of facility agricultural worker pays attention to.This paper based on the 4 kinds of general cooling measure in summer greenhouse: openings on the roof, pad-and-fan, inner sunshading and outside sunshading, when it uses respectively, the change of the environment of temperature and humidity in greenhouse have gone on experimental research. The result is: in the glass greenhouse of V96 model of in the south area of the Changjiang River,when the environment of the temperature and humidity from steady state open 4 difference kinds cooling measure then reach another balanced state, openings on the roof, pad-and-fan, inner sunshading and outside sunshading , greenhouse internal and external temperature difference is 0.7℃ , -2.6℃ , 3.3℃ with - 0.4℃; and greenhouse internal and external humidity difference is 2.8% , 23.3%, -0.3% with 7.7%.For the 5 kinds of different combination: openings on the roof + inner sunshading and openings on the roof + outside sunshading and pad-and-fan + inner sunshading and pad-and-fan + outside sunshading and pad-and-fan + inner sunshading + outside sunshading, difference experimental research show as a result, 5 kinds of measure combination cooling effect: openings on the roof + inner sunshading < openings on the roof + outside sunshading < pad-and-fan + inner sunshading < pad-and-fan + outside sunshading < pad-and-fan + inner sunshading + outside sunshading; for the increase for inside humidity level, as the result just with cooling effect opposite.For above-mentioned the 4 kinds of individual cooling measure and 5 kinds of combination, in the duration from the beginning to cooling to the steady , the change relation of temperature and humidity inside, it is used difference way such as linear, logarithmic, binomical , power product and exponential function to probe the quantify relation, reached conclusion: besides openings on the roof, the other 8 kinds of cooling measure use binomical functions to suit the change relation of temperature and humidity inside will join the correlation best.According to experimental data and related information, this paper is taking temperature, humidity and illuminance as parameters to the affect coefficient of crop...