【 Weak current College 】 definition of refrigeration system simulation

Definition:
Refrigeration system simulation, popular, is the computer system simulation method used in the introduction to refrigeration and air conditioning equipment for system modeling and characterization. Through computer simulation of the actual work of the refrigeration system, process simulation system parameters phase coupling and match the various components of the system, the research system work characteristics, to improve or optimize the cooling system parts or equipment. To enable the performance check of the refrigeration system, by changing or part structure to achieve optimal design of the system, and to control the system selection appropriate control strategies to provide the appropriate interface software, and data. The maximum expected objective is to replace the traditional prototyping experiments.
Research status:
As an application of basic science, system simulation of rapid development in recent years has been to use all areas of science and technology have, showing huge social and economic benefits, and will serve as a discovery issues, research questions, solve problems of basic means to play an increasingly important role. In the refrigeration and air-conditioning industry, refrigerators, air conditioners, and other cooling devices not only with the people's daily life are closely related, but also the impact of national policies in the energy use of one of the major factors. Therefore, the performance of refrigeration and air conditioning equipment is not only the needs of ordinary people, and nation-building needs. Traditional refrigeration and air conditioning product design since the prototype in the main producing and testing repeatedly, both to increase development costs, let alone product performance optimization, energy saving, high costs and long life cycle. For device manufacturers, how to use modern science and technology, in a relatively short period and at a lower cost, design and produce excellent performance of refrigeration and air conditioning equipment, over the last 10 years has been the air conditioning refrigeration research priorities and hotspots and increasingly affected by researchers and product manufacturers.
By refrigeration and air conditioning equipment of computer simulation and optimization of the application, you can achieve the above computer products to optimize the design, and no longer depend on a large number of prototype testing. Alternatively, you can reduce the minimum degree of prototype test of blindness to test more targeted and direction. In addition, since the 1990 's, due to the energy-saving material and the urgency of CFCs instead, you need to design and optimize a large number of new environment-friendly refrigerant in the refrigeration and air conditioning equipment, on the one hand from the objective conditions for refrigeration and air conditioning equipment performance prediction research provides a wealth of subjects, but on the other hand, due to the new refrigerant characteristics known generally lack in device design process of accumulated experience to choose new refrigerants of devices are often no longer apply, experience and test design flaws more pronounced, so the theory predicts higher requirements. This also increases the system simulation of actual requirements.
Refrigeration system simulation test because it has save costs, shorten product development time, reducing costs and saving, etc., has aroused considerable attention. Norway, Germany, Canada, the United States and Japan and other countries in the 1970s before starting to invest a lot of work, the research results have already put into practical applications, such as the development of PUREZ software. China research work in this area relatively late, but after 20 years of rapid development, theoretical studies have matured, and initial start towards applications. Our simulation study of the refrigeration system has gone through two stages. Since Professor Chen Zhi long "in domestic refrigeration system thermal dynamics" point of view, many researchers engaged in research on the refrigeration system simulation, and made a large number of research results, the first stage; the second stage is small and smart simulation guoliang perspectives to address traditional convergence of numerical simulation speed and precision, in addition to the air conditioner simulation has some of the other very seldom seen. Shanghai Jiao Tong University, Tsinghua University, Xi'an transport units were launched window type air conditioners, split-type air conditioner and inverter air conditioner of simulation and optimization software, to conduct research on the frequency conversion air conditioning system, and through the simulation of electronic expansion valve for use with a capillary system as throttling device was studied and optimization, and achieved very good results.
Existing refrigeration system simulation, more research object for small refrigeration systems, such as room air conditioners, refrigerators and air conditioning. Since the 1960s Start computer simulation model in room air conditioner system are applied, the room air conditioner system and part of the simulation is becoming more and more in-depth research. Simulation of room air conditioner is on one of the objectives of the existing room air conditioner system verification of performance, followed by changing the system or parts of structures for the optimal design of the system, while at the same time provide for the control system is charged with the software. Simulation of the ultimate goal is to expect maximum instead of experiment. Tsinghua University, Shanghai Road, Xi'an transport units were launched window type air conditioners, split-type air conditioner and inverter air conditioner of simulation and optimization software, to conduct research on the frequency conversion air conditioning system, and through the simulation of electronic expansion valve for use with a capillary system as throttling device was studied and optimization, and achieved very good results. Furthermore, the auto air-conditioner and refrigerator cooling system simulation also achieved good results.