结霜工况下冷风机优化设计与制冷网络教学系统
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摘要
本文主要运用了迅速发展的CAD技术和计算机技术,对以下三个方面进行了研究:
     1.在分析总结各参数对冷风机换热性能影响的基础上,进行了结霜工况下冷风机蒸发器的设计计算以及程序编制。利用该程序对某一工况进行了设计计算,并利用AutoCAD二次开发工具ObjectARX进行参数化绘图,开发了冷风机蒸发器CAD软件。
     2.在设计计算的基础上,根据经济优化准则,建立结霜工况下冷风机蒸发器的优化设计模型,开发了结霜工况下冷风机蒸发器优化设计软件,利用该软件进行了计算,并对优化结果进行讨论。根据冷风机蒸发器优化设计的优化思路,对制冷系统优化设计进行了初步研究。为了使优化设计结果更加准确,采用有限元叠加法对结霜工况下冷风机结霜特性进行了研究,计算结果跟国内外实验结果基本相吻合。
     3.对整个制冷网络教学系统进行了全面完善,提出了性能改进方案,开发的制冷网络教学考试系统很好的应用于本科教学中,并分析了网络教学系统的发展趋势,提出了基于J2EE网络教学系统的模型。
The paper mainly utilizes rapidly developed technology of CAD and computer, and mainly studies the following three aspects:
    1. Based on the analysis of each parameter's performance influence of air cooler heat exchange, doing the research work of design computation and programming of air cooler's evaporator under frosting conditions, calculating by utilizing the program for one condition, analyzing the result and parametric drawing by second-developed tool: ObjectARX, and developing the software.
    2. Based on the design computation, according to economic optimization rule, building the optimized design model of air cooler's evaporator under frosting conditions, also developing the software and computing and analyzing the optimization result by using the software. According to the thinking of optimization, studying optimized design of refrigeration system. Also studying the limited superposed method to calculate the unstable performance of air cooler under frosting conditions.
    3. Introducing the design process of refrigeration network education examination system, also bettering the whole system and putting forward the method of performance improvement, and building the network education system model basing on J2EE in the near future.
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