新型GAX循环的氨水吸收式制冷系统的理论分析与仿真研究
发布时间：2018-10-26 09:09
【摘要】：现如今，我国工业已经进入快速深入发展的历史进程中，节能减排已经成为我国现阶段的一个重要的改革方向。而高效率、低消耗、低成本已经成为制冷行业的一个风向标，所以在经过历史颠簸的过程后，氨水吸收式制冷系统将重新被人们认识，而在研究的过程当中，如何提高系统的热效率，成为现如今研究的热点，而在所有氨水吸收式制冷系统中，以GAX循环的效率最高。因此，本文将在前人对基本的GAX系统研究的基础上，提出一种新型GAX循环氨水吸收式制冷系统，并且对该系统进行理论的分析和仿真模拟研究，并对结果经行对比分析。 经过长期深入研究氨水吸收式制冷系统的种类有很多，，但只有GAX循环系统的COP值是最高，借此本文深入分析了氨水GAX循环的吸收式制冷系统循环机理，以及国内外在这此系统上的研究程度。 新型GAX循环的理论分析，最重要的就是对该系统氨水制冷工质对的物理性质有最清楚了解，并且在系统计算时要经常用到物性参数，而在模型仿真模拟式可能要调用成千上万次，所以文章采用VC++开发编写了氨水溶液液相和气相的热物理性质、饱和氨液相和气相、过热蒸汽的热力参数的计算软件。 本文还同时采用VC++编程语言编制出新型GAX循环氨水吸收式制冷系统计算软件。可以计算不同工况下设备的参数，较便捷的进行查看对比分析研究。并且借助于大型的化工流程仿真模拟软件Aspen plus经行模拟实验，可以得到比较直观仿真模拟数据，并与编程出的计算结果进行比较分析，来完善系统的不足。文章还对新型GAX循环系统的火用损失进行了计算，来分析系统有效能的使用状况。
[Abstract]:Nowadays, China's industry has entered the historical process of rapid and in-depth development, energy saving and emission reduction has become an important direction of reform at the present stage of our country. And high efficiency, low consumption and low cost have become a wind vane in the refrigeration industry, so after the history of turbulence, ammonia absorption refrigeration system will be re-recognized, and in the process of research, How to improve the thermal efficiency of the system has become a hot topic nowadays. Among all the ammonia absorption refrigeration systems, the GAX cycle has the highest efficiency. Therefore, based on the previous researches on the basic GAX system, a new type of GAX cycle ammonia absorption refrigeration system is proposed in this paper. The theoretical analysis and simulation of the system are carried out, and the results are compared and analyzed. There are many kinds of ammonia water absorption refrigeration system after a long period of in-depth study, but only the COP value of GAX cycle system is the highest. Therefore, the mechanism of ammonia water GAX absorption refrigeration system cycle is analyzed in this paper. And the degree of research on this system at home and abroad. In the theoretical analysis of the new GAX cycle, the most important thing is to have a clear understanding of the physical properties of the working pairs of ammonia refrigeration in the system, and to use the physical parameters frequently in the calculation of the system. In this paper, the thermophysical properties of ammonia solution in liquid phase and gas phase, the thermodynamic parameters of saturated ammonia liquid and gas phase, and superheated steam are calculated by VC. At the same time, using VC programming language, a new type of GAX cycle ammonia absorption refrigeration system calculation software is developed. Can calculate the parameters of the equipment under different working conditions, more convenient to view comparative analysis. With the aid of the large-scale chemical process simulation software Aspen plus, the simulation data can be obtained, and compared with the calculated results of the program to improve the shortage of the system. The exergy loss of the new GAX circulatory system is calculated to analyze the efficiency of the system.
【学位授予单位】：陕西理工学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB657
本文编号：2295242
[Abstract]:Nowadays, China's industry has entered the historical process of rapid and in-depth development, energy saving and emission reduction has become an important direction of reform at the present stage of our country. And high efficiency, low consumption and low cost have become a wind vane in the refrigeration industry, so after the history of turbulence, ammonia absorption refrigeration system will be re-recognized, and in the process of research, How to improve the thermal efficiency of the system has become a hot topic nowadays. Among all the ammonia absorption refrigeration systems, the GAX cycle has the highest efficiency. Therefore, based on the previous researches on the basic GAX system, a new type of GAX cycle ammonia absorption refrigeration system is proposed in this paper. The theoretical analysis and simulation of the system are carried out, and the results are compared and analyzed. There are many kinds of ammonia water absorption refrigeration system after a long period of in-depth study, but only the COP value of GAX cycle system is the highest. Therefore, the mechanism of ammonia water GAX absorption refrigeration system cycle is analyzed in this paper. And the degree of research on this system at home and abroad. In the theoretical analysis of the new GAX cycle, the most important thing is to have a clear understanding of the physical properties of the working pairs of ammonia refrigeration in the system, and to use the physical parameters frequently in the calculation of the system. In this paper, the thermophysical properties of ammonia solution in liquid phase and gas phase, the thermodynamic parameters of saturated ammonia liquid and gas phase, and superheated steam are calculated by VC. At the same time, using VC programming language, a new type of GAX cycle ammonia absorption refrigeration system calculation software is developed. Can calculate the parameters of the equipment under different working conditions, more convenient to view comparative analysis. With the aid of the large-scale chemical process simulation software Aspen plus, the simulation data can be obtained, and compared with the calculated results of the program to improve the shortage of the system. The exergy loss of the new GAX circulatory system is calculated to analyze the efficiency of the system.
【学位授予单位】：陕西理工学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB657
【参考文献】
相关期刊论文 前2条
1 徐士鸣;中压双效复叠吸收式制冷循环研究[J];大连理工大学学报;2000年03期
2 陈光明,冯仰浦,王剑锋,飞原英治;一个用太阳能驱动的新型吸收制冷循环[J];低温工程;1999年01期
本文编号：2295242
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