空调箱数字化设计系统的模型分析
发布时间：2019-03-16 12:24
【摘要】：随着整个社会物质水平的日益提高及科技的日益发达,人们越来越关心自己的居住环境和空气品质,空气调节已成了日常必不可少的需求。空调箱,即组合式空调机组,因其自由组合功能段且处理风量大等特点,作为中央空调系统而受到了广泛的应用。一般空调箱选型时,由于处理空气的部件较多且复杂,所以传统的手工计算需要多次的重复劳动,不仅降低了工作效率,也不能保证计算结果的合理性。为此,通过计算机仿真技术对各功能段进行模块化设计,并基于各功能段模块开发出了空调箱数字化设计系统,实现空调箱设计、计算、选型、输出CAD图纸和报告一体化的功能,本文主要做了以下工作:一、对湿空气进行物性参数的研究,拟合了湿空气的饱和水蒸汽曲线公式,并建立了湿空气的物性计算模型,加快了计算机调用物性参数的速度和精度;二、建立了空调箱冷水盘管干工况、冷水盘管湿工况、热水盘管干工况的传热传质模型,并基于此开发了冷水盘管已知制冷量和已知出风参数的设计计算模型;建立了冷水盘管的仿真计算模型,并通过实验进行验证其合理性;三、建立了板翅式热回收和转轮式热回收的传热传质模型,利用前人的研究成果对转轮式热回收模型的合理性进行验证。通过仿真计算,得到了板翅式热回收的性能参数和回收效率随迎面风速和交换膜厚度的变化曲线;得到了转轮式热回收的性能参数和回收效率随迎面风速、转轮厚度和转轮转速的变化曲线;四、基于上述模型及其他功能段模型,在原来前辈的开发基础上,拓展开发了新的机组设计形式:双层热回收机组,完善优化了空调箱数字化设计系统。
[Abstract]:With the improvement of material level and the development of science and technology, people pay more and more attention to their living environment and air quality, and air conditioning has become an indispensable requirement in daily life. Air conditioning box, that is, combined air conditioning unit, has been widely used as a central air conditioning system because of its characteristics of free assembly and large air volume. In general air-conditioning box selection, because there are more and more complicated parts to deal with air, the traditional manual calculation requires repeated work many times, which not only reduces the work efficiency, but also can not guarantee the rationality of the calculation results. In order to realize the design, calculation and selection of the air-conditioning box, the digital design system of the air-conditioning box is developed based on the module of each function section and the modularization design of each function section is carried out by means of computer simulation technology. The main work of this paper is as follows: first, the physical parameters of wet air are studied, the formula of saturated water vapor curve of wet air is fitted, and the physical property calculation model of wet air is established. It speeds up the speed and precision of calling physical parameters by computer. Secondly, the heat and mass transfer models of cold water coil dry working condition, cold water coil wet working condition and hot water coil dry working condition are established. Based on this, the design and calculation models of the known cooling capacity and the known outlet air parameters of the cold water coil are developed. The simulation calculation model of cold water coil is established, and its rationality is verified by experiment. Thirdly, the heat and mass transfer models of plate-fin heat recovery and wheel heat recovery are established, and the rationality of the model is verified by previous research results. The performance parameters and recovery efficiency of plate-fin heat recovery are calculated by simulation, and the curves of the variation of performance parameters and recovery efficiency with the velocity of attack and the thickness of the exchange film are obtained. The variation curves of the performance parameters and recovery efficiency of the runner type heat recovery with the wind speed, the thickness of the runner and the rotating speed of the runner are obtained. Fourthly, based on the above-mentioned models and other functional segment models, a new type of unit design, double-layer heat recovery unit, is developed on the basis of the development of the previous generation, and the digital design system of air-conditioning box is improved and optimized.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU831
[Abstract]:With the improvement of material level and the development of science and technology, people pay more and more attention to their living environment and air quality, and air conditioning has become an indispensable requirement in daily life. Air conditioning box, that is, combined air conditioning unit, has been widely used as a central air conditioning system because of its characteristics of free assembly and large air volume. In general air-conditioning box selection, because there are more and more complicated parts to deal with air, the traditional manual calculation requires repeated work many times, which not only reduces the work efficiency, but also can not guarantee the rationality of the calculation results. In order to realize the design, calculation and selection of the air-conditioning box, the digital design system of the air-conditioning box is developed based on the module of each function section and the modularization design of each function section is carried out by means of computer simulation technology. The main work of this paper is as follows: first, the physical parameters of wet air are studied, the formula of saturated water vapor curve of wet air is fitted, and the physical property calculation model of wet air is established. It speeds up the speed and precision of calling physical parameters by computer. Secondly, the heat and mass transfer models of cold water coil dry working condition, cold water coil wet working condition and hot water coil dry working condition are established. Based on this, the design and calculation models of the known cooling capacity and the known outlet air parameters of the cold water coil are developed. The simulation calculation model of cold water coil is established, and its rationality is verified by experiment. Thirdly, the heat and mass transfer models of plate-fin heat recovery and wheel heat recovery are established, and the rationality of the model is verified by previous research results. The performance parameters and recovery efficiency of plate-fin heat recovery are calculated by simulation, and the curves of the variation of performance parameters and recovery efficiency with the velocity of attack and the thickness of the exchange film are obtained. The variation curves of the performance parameters and recovery efficiency of the runner type heat recovery with the wind speed, the thickness of the runner and the rotating speed of the runner are obtained. Fourthly, based on the above-mentioned models and other functional segment models, a new type of unit design, double-layer heat recovery unit, is developed on the basis of the development of the previous generation, and the digital design system of air-conditioning box is improved and optimized.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU831
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