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Simulation and Experimental Study on a Finned Tube Evaporator

Author: LiJun
Tutor: LiuChuZuo
School: Zhejiang University
Course: Refrigeration and Cryogenic Engineering
Keywords: Evaporator Experiment Simulation Simulation Optimization : CFD
CLC: TB65
Type: Master's thesis
Year: 2005
Downloads: 742
Quote: 9
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Abstract


Evaporator refrigeration unit is the most important part of one of its operational status is directly related to the merits of the entire refrigeration system performance. Application of simulation technology can simulate the operational status of the evaporator, thereby optimizing its design and operation to provide guidance and reference. This work consists of the following four components: a small refrigeration unit evaporator experimental research, simulation software development, the performance of the evaporator and CFD simulation software. Refrigeration apparatus set up for small experimental studies evaporator test bench through a large variety of experimental conditions on the evaporator performance parameters of the experimental data, the use of these experimental data, the performance of the evaporator to make a correct evaluation, To improve the performance of the evaporator and the development of appropriate design standards provide a reference, and for the simulation study provides sufficient data sample. Established a small refrigeration unit evaporator distributed parameter simulation model, and discusses the determination of the parameters, simulation algorithm, computational simulation program application processes and other issues. Using Visual C programming tools developed evaporator simulation software to simulate the various conditions of the evaporator performance, the performance of the evaporator to make more accurate predictions. Simulation' dissertation">Simulation program uses a modular design ideas, make full use of the characteristics of object-oriented design language, with the class in the form of an evaporator simulation involved variables and functions into the air side, the refrigerant side and the structure three program modules, enhanced readability, portability and scalability. Developed using simulation software simulation of the performance of the evaporator, through the method of Chart simulation results were compared with the experimental data and simulation results and fits the literature data indicate that the simulation model and algorithms are reliable, the accuracy to meet the engineering application needs of engineering simulation software has some practical value. Select the evaporator part of the structure parameters and thermal parameters as variables, using the simulation software to simulate various parameters on the performance of the evaporator and the results were analyzed. Simulations using CFD software Fluent air used in this experiment evaporator flow and heat transfer conditions in different face velocity, we obtain the evaporator temperature and pressure fields. The results showed that CFD software in the refrigeration field has good application prospects.

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CLC: > Industrial Technology > General industrial technology > Refrigeration Engineering > Refrigeration machinery and equipment
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