Research On Forecast And Simulation Of Cooling Glasshouse Temperature In Summer

The time series model and CFD model of glasshouse temperature in summer is an important basis tocontrol the glasshouse temperature.And it can help reduce greenhouse energy consumption and increaseproduction efficiency. It can also provide a theoretical basis for using Venlo-Type glasshouse completely.This dissertation took the Venlo-Type glasshouse in the campus of Heilongjiang August First AgricultureUniversity as the research object, finished the cooling experiments in the Venlo-Type glasshouse at the superheat condition in summer. First, collecting the data about temperature both vertical and horizontal directions inthe greenhouse, and weather data outside. Second, replenishing the missing data and error data and providingdata resources for the set of parameters in the model.On the basis of the above, build three time series models for getting kinds of cooling effect models. Acomparison between the forecasts and the measured data shows that the model was able to forecast internal airtemperature reasonably well. Then, build the CFD model. Got the law of the distribution of temperature in thegreenhouse and based on the above studies, Compared to forecast results and simulation results, we canpre-visualize the control of the Venlo-type glasshouse temperature to obtain. At last, we optimized the designof the Venlo-Type glasshouse structure.