摘要
针对跨临界CO2制冷技术,根据毛细管的能量守恒、动量守恒、质量守恒,采用集中参数为跨临界CO2制冷系统建立了动态数学模型,运用Matlab进行数学计算及求解,选取了冷凝器冷凝温度、冷凝器出口温度、蒸发器入口温度作为输出参数,对毛细管长度和直径发生改变时的制冷系统进行了仿真,再对其数据进行分析与参数调整,使得制冷空调系统的能效比和制冷性能达到最佳.从而为工业设计和开发节约时间和物力.且该模型能够完整地反映跨临界CO2制冷系统的多输入多输出关系,研究控制参数对系统性能的影响,为CO2制冷系统的优化设计和优化控制打下了良好的基础.
In view of trans-critical co2 refrigeration technology, lumped parameter is used to establish the dynamic mathematical model for the trans-critical co2 refrigeration technology according to capillary＇s energy conservation, mornentum conservation, mass conservation. Matlab is used to carry through calculating and solving, and condenser condensing temperature, condenser outlet temperature and evaporator inlet tem-perature are selected as output parameters. The model simulates the refrigeration system when the length and diameter of capillary change. Af- ter analyzing data and adjusting parameters, the energy efficiency ratio and refrigeration performance of the refrigeration air-condition system are both to be the best which could save time and material resources for designing and developing in industry. The model can reflect integrally the relationship of multiple-input and multiple input of trans critical co2 refrigeration system, research the influence of controlled variable pa rameters to the system performance, and build found well foundation for the system＇s optimization controlling and designing.
出处
《商丘职业技术学院学报》
2012年第5期76-78,共3页
JOURNAL OF SHANGQIU POLYTECHNIC
基金
河南省科技攻关计划资助项目(112102310419
112102310385)
