摘要
为了在改变温室通风口开度的条件下模拟室内气温,根据热量平衡原理,考虑太阳辐射、长波辐射、对流、通风及作物蒸腾等5个主要模块,对温室系统的热量交换进行描述,构建了温室气温动态变化的数学模型,然后通过Simulink仿真平台搭建了以通风为输入以室温为输出的模型仿真框图,并利用典型天气条件下的实测数据对仿真结果进行检验。仿真结果证明了该模型的有效性:在晴天和阴雨天,标准误差分别为0.755 8℃和0.096 3℃,仿真有效性指数分别为92.29%和92.76%。
In order to describe the variation of indoor thermal environment in Chinese solar greenhouse, a non-linear differential simulation model for the greenhouse indoor air temperature was built. A new method was adopted for model solution, which was based on Simulink platform on blocks of greenhouse thermal balance function, and method of connect technology of the blocks was solved. There were five main modules taken into account for describing greenhouse heat exchange with the outside world, including solar radiation, long wave radiation, convection, ventilation and crop transpiration. In the model testing, meas- ured data in two typical weather conditions were chosen, and the simulation results verified the validity of simulation model for the Chinese solar greenhouse： the standard errors in sunny and rainy days were 0. 755 8 ℃ and 0. 096 3℃ respectively, as well as the simulation effective indexes were 92.29% and 92. 76%.
出处
《灌溉排水学报》
CSCD
北大核心
2013年第2期86-89,共4页
Journal of Irrigation and Drainage
基金
国家自然科学基金项目(50979077)
关键词
温室
热环境
仿真模型
greenhouse
thermal environment
simulation model
