The Research On The Dynamic Model Of The Thermal Environment Of Greenhouse

The greenhouse is a kind of agriculture production building facilities. A main characteristic of modern greenhouse is to make use of the control equipments to control the environment in the greenhouse according to the outdoors weather term and the stage of the growth and adopt the continuous mode of production with manage the way efficiently and balanced. The greenhouse is a half-closed environment system, which is influenced by the outdoors environment greatly. Proceeding the research on the internal environment of greenhouse in the region of Urumqi is of great importance to develop the native glasshouse industry. The research object of this text is the internal environment of the Rainbow Group's cotton breeding greenhouse. First of all, introduce the characteristics of the light environment, the temperature environment and the humidity environment, which affect the internal thermal environment of greenhouse greatly and the request to these environment of cotton breeding briefly. Secondly, divide the whole greenhouse into the four layers, which is the cover, the internal air, the plant and the soil. According to the theory of heat conduction, establish the thermal balanced equation of the four layers. Thirdly, adopt the definite numerical arithmetic, and use the MATLAB to program to solve the non-linear equation system and validate the correctness of it. Finally, find out the disadvantages of the greenhouse and put forward the suggestion to reconstruct it.