摘要
为了模拟自然通风条件下日光温室内温湿度的变化,将通风口开度进行量化处理,根据热量平衡和水汽质量平衡原理构建了温室内气温和湿度的动态变化数学模型。利用Simulink仿真平台将二者结合,搭建了以通风为输入、以室内温湿度为输出的温室微气候系统仿真框图,利用2类典型天气条件下的实测数据对模型进行了仿真检验。研究结果表明,室内气温的标准误差最大为0.479 2℃,仿真有效性指数最小为73.03%;室内湿度的标准误差最大为1.943 7%,模型有效性指数最小为71.13%;仿真模型是有效的。
In order to simulate indoor temperature and humidity of Chinese solar greenhouse, two non-line- ar differential models each for air temperature and humidity inside greenhouse were constructed by quanti- zing the vent opening, according to the thermal balanee principle and water vapor quality balance principle of greenhouse. The method of model solution was solved based on a design idea of Simulink platform on blocks of the two greenhouse micro-climate functions. In the model testing, measured data in two typical weather conditions were chosen, and the simulation results testified the validity of simulation model for the Chinese solar greenhouse. The results showed that the standard errors for inside temperature and humidity were RMSE〈0. 479 2 ~C and RMSE〈1. 943 7% respectively, as well as the index of simulation effective- ness were EFt73.03% and EF〉.71.13%.
出处
《灌溉排水学报》
CSCD
北大核心
2013年第1期61-64,共4页
Journal of Irrigation and Drainage
基金
国家自然科学基金项目(50979077)
关键词
日光温室
通风
建模
仿真
greenhouse ventilation model buildings simulation
