摘要
本文探讨了基于AutoCAD二次开发工具ObjectARX的制冷装置部件的计算机辅助设计方法,研究开发了电冰箱CAD系统。该系统完成了对典型制冷装置的换热器部件,如板管式蒸发器、单脊翅片管式蒸发器、箱壁式冷凝器的参数化设计和绘图;分析了绝热型毛细管两相流的物理模型,并建立数学模型,对绝热型毛细管各主要参数对其长度的影响进行了数值模拟和计算分析;基于对电冰箱箱体绝热层厚度的传热分析和计算,完成了整个箱体的参数化设计和绘图工作。整个系统界面友好,操作方便。
此外,本文还介绍了基于Visual Basic6.0的制冷装置自动化动态模拟软件的创建方法和主要功能。
This paper mainly describes how to exploit CAD system of the parts of
Refrigerating Plants based on an AutoCAD second developing tool------ObjectARX.
Focusing on refrigerators, I develop a refrigerator CAD system. The system implements the parametric design and drawings of many typical kinds of refrigerating parts, e. x. the plate-tube evaporator, the single back-fin evaporator and the box condenser. After analyzing the physical model and setting up the mathematical model according to the two-phase flow of adiabatic capillary tubes, it also numerically simulates and analyzes the different effects of main parameters on the capillary tube length. Based on the heat transfer analysis and counting of thermal insulation layer, the CAD system accomplishes the parametric design and drawings of the refrigerator body. The interface of the whole system is friendly and can be used conveniently.
Furthermore, the paper introduces the developing method and the main functions of the dynamic simulation software for refrigerating machines, which is based on Visual Basic 6.0.
引文
1.宋宪一.CAD基础教程.天津大学出版社,1999.1
2.王一红,季全芝.高校CAD教育问题初探.全国高等院校计算机基础教育研究会’98年会学术论文集,1998
3.陈国栋.计算机绘图及CAD基础.浙江大学工程及计算机图学研究所,1997.6
4.李凌丰,曹敏.CAD基础及应用.浙江科学技术出版社,杭州,1999.4
5.孙江宏,丁立伟,米洁.AutoCAD ObjectARX开发工具及应用.清华大学出版社,1999.2
6.李世国.AutoCAD高级开发技术ARX编程及应用.机械工业出版社,1999.9
7.Autodesk Inc.. ObjectARX Developer's Guide & Reference Manual,1997
8.陈东,蔡惠平.冰箱结构设计CAD.制冷,Vol.50,No.1,1995
9.俞国新,姚奕,卜啸华.制冷工程计算机辅助设计技术的探讨.制冷,Vol.54 No.1,1996
10.莫劲松.制冷设备的最优化设计.制冷,1996.1
11.崔兴华.家用冰箱制冷系统优化匹配研究.华东工业大学学报,1995.5
12.谭夏梅.制冷系统中有关匹配的两个问题.广东机械学院学报,Vol.12,No.2,1994.6
13.蔡汝斌,李国华.小型冷藏箱制冷系统计算机辅助设计.制冷学报,1996.4
14.周子成.房间空调器热泵运行时的瞬态仿真.制冷学报,1998.4
15.吴业正,王瑞祥,解国珍,曹小林.双制冷循环电冰箱的计算机仿真.制冷学报,1996.3
16.陈芝久.制冷装置自动化.机械工业出版,北京,1997.5
17.朱瑞琪.制冷装置自动化.西安交通大学出版社,西安,1993.12
18.杨皓,姚毓华.基于Windows平台的“机械设计”多媒体教学软件的开发.微型电脑应用,1998.3
19.王梅芬,戴星明,欧婷,孙晓明,郭欢庆.一个面向公共基础课的通用集成教学系统——关于面向21世纪的教学改革的探讨之一.计算机应用,1997.9
20.王本中.教育软件的优势.多媒体世界,1995.10
21.陈世红.多媒体制作技巧与实例.清华大学出版社,1998.5
22.张国宝.AutoCAD Visual Basic开发技术.科学出版社,2000.1
23.高建民,桑正中.ObjectARX中应用MFC两个关键技术问题的探讨.机械设计与制造,No.5,Oct.2000
24.Kate Gregory.Special Edition Using VC++5.0 Que Corporation,1997
25.凌云,马玉林,周洪玉,周岩.基于ARX的三维参数化特征造型.微型机与应用,Vol.19,No.4,2000
26.林毅,吴德中,严隽琪,马登哲.用ARX技术开发CAD标准数据库.上海交通大学学报,Vol.33,No.7,1999
27.曹超,魏群.电冰箱的原理、使用、维修.电子工业出版社,1985.10
28.Carrier Transicold. Distributed Steady and Dynamic Modelling of Dry-expansion Evaporators. International Journal of Refrigeration, 1999.2
29.生产实习讲义.浙江大学,1993.5
30.[日]尾花英朗.徐中权 译.热交换器设计手册(下册).石油工业出版社1985
31.朱聘冠.换热器原理及计算.清华大学出版社,1985.4
32.王剑峰.制冷与低温传热传质设备.浙江大学能源工程系,1997.7
33.吴业正.小型制冷装置设计指导.机械工业出版社,1998.8
34.方贵根.空调器的蒸发器、冷凝器计算机辅助设计.节能技术,1993.5
35.徐彬,谢亚清.翅片管式蒸发器的计算机辅助设计.南昌大学学报,Vol.20,No.4,1998
36.揭基华.冰箱用丝管式冷凝器的传热面积确定.制冷,No.1,Vol.46,1994
37.揭基华.冰箱用箱壁式冷凝器的传热面积确定.制冷,No.1,Vol.50,1995
38.C.Gabrielii, L.Vamling. Replacement of R22 in tube-and-shell condensers experiments and simulations. International Journal of Refrigeration, Vol.20, No.3, May 1997:p165~178
39.Rupasinghe A.S. Modeling of capillary tubes for household refrigerators and freezers.M.E. Thesis, University of Auckland, Auckland New Zealand,1996
40.蒋能照,吴兆琳,翁文兵.新制冷工质热力性质图和表.上海交通大学出版社,上海,1992.4
41.陈东,蔡惠平.冰箱结构设计CAD.制冷,Vol.50,No.1,1995
42,W.M.罗森诺.传热学手册.科学工业出版社,1985
43.国家标准GB8059.1~3-87.家用制冷器具(电冰箱)
44.赵晓宇,韩礼钟,朱明善.冰箱毛细管计算模型.工程热物理学报,Vol.16,No.2,1995.5:p145~148
45.Bansal P K, Rupasinghe A S.. An empirical model for sizing capillary tubes[J]. Int J Refrig, 1996, 19(8): p497~505
46.Staebler L.A.. Theory and use of a capillary tube for liquid refrigerant control. Refrig. Engng,1948: p55~59, p102~103
47.Bolstad M.M., Jordan R.C.. Theory and use of the capillary tube expansion device Part Ⅱ nonadiabatic flow. Refrig Engng, 1949: p572~583
48.Marcy G.P.. Pressure drop with change of phase in a capillary tube. Refrig Engng, 1949, 57(1): p53~57
49.Hopkins N.E.. Rating the restrictor tube. Refrig Engng, 1950, 58(11):p1087~1095
50.Cooper L., Chu C.K., Bresken W.R.. Simple selection method for capillaries derived form physical flow conditions. Refrig Engng, 1957,65(7): p37~46
51.Whitesel H.A.. Capillary two-phase flow Part Ⅱ. Refrig Engng, 1957,65(9): p35~47
52. Erth R.A.. Two-phase flow in refrigeration capillary tubes: analysis and prediction. Ph.D thesis Purdue University,Sept. 1969
53. Rezk A. , Awn A. . Investigation on flow of R12 through capillary tubes . Proc 15th Int Congr Refrig, 1979. 2: p443~452
54. Mazek K.,Krolicki Z.. Non-adiabatic process in throttling capillary tube with metastable. process Proc 16th Int Congr Refrig Essen,Germany ,1981: p49~57
55. Mazek K., Krolicki Z, Sochanecka E.. Model of throttling capillary tube with metastable. process Proc 16th Int Congr Refrig Essen, Germany,1983: p699~707
56. Lin S., Kwok C.C.K., Li R.Y.L. Chen Z.H.,Chen Z.Y. Local frictional pressure drop during vaporization of R12 through capillary tubes. Int J Multiphase Flow, 1991, 17(1) : p95~102
57. Li R.Y., Lin S., Chen Z.Y,Chen Z.H.. Metastable flow of R12 through capillary tubes. Int J Refrig, 1990, 13(3) : p181~186
58. Melo C.,Ferreira R.T.S.,Pereira R.H.. Modeling adiabatic capillary tubes:a critical analysis. Proc IIR-Purdue Refrigeration Conf,West Lafayette. U.S.A. , 1992: p113~123
59. Escanes F, Perez-Segaran C D, Oliva A.. Numerical simulation of capillary-tube expansion devices [J]. Int J Refrig,1995,18(2) : p113-122
60. Bittle R R,Pate M B.. A theoretical model for predicting adiabatic capillary tube performance with alternative refrigerants [J]. ASHRAE Transactions,1996, 102(2) : p52~64
61. Yilmaz T, Unal S.. General equation for the design of capillary tubes [J] . ASME Journal of Fluids Engineering, 1996, 118: p150~154
62. Swart R.H.. Capillary tube heat exchangers. Refrig Engng, Sept. 1946 : p46
63. Pate M.B.. A theoretical and experimental anlysis of capillary tube-suction line heat exchangers. Ph.D. thesis, Purdue University, 1982
64. Dirik E., Inan C.,Tanes M.Y.. Numerical and experimental studies on adiabatic and non-adiabatic capillary tubes with HFC-134a . Proc IIR-Purdue Refrigeration Conf, West Lafayette U.S.A ,1994: p365~370
65. Peixoto R.A.,Bullard C.W.. A simulation and design model for capillary tube-suction line heat exchangers. Int Refrig Conf Purdue University,West Lafayette U.S.A. , 1994: p335~340
66. Bittle R.R.,Stephone W.R., Pate M.B.. Anevaluation of the ASHRAE method for predicting capillary tube-suction line heat exchanger performance. ASHRAE Trans, 1995, 101(2)
67. Peixoto R.A.. Experimental analysis and numerical simulation of capillary tube-suction line heat exchangers using refrigerant HFC-134a. Proc 19th Int Congr Refrig The Hague, The Netherlands, 1995, 3(a): p437~443
68. Chen z.h., Li R.Y.. A Correlation for Metastable Flow of Refrigerant 12 Through Capillary Tubes. ASHRAE Transaction,Vol.97,No.3364,1991: p550~554
69. 杨世铭,传热学(第二版),高等教育出版社, 1994. 10
70.D.P.Wilson, R.S.Basu. Thermodynamic propertites of a new stratospherically safe working fliud——refrigerant R134a. ASHRAE Journal,Part2,1988
71.张付卿.不可压缩单相流体紊流区沿程阻力计算.油气储运,Vol.18,No.2,1999
72.张春路,丁国良,李灏.毛细管内两相流的通用积分模型.化工学报,Vol.50,No.4,1999
73.张春路,丁国良,李灏.绝热毛细管性能模拟的平均参数模型.上海交通大学学报,Vol.33,No.8,1999
74.工程热力学.高等教育出版社,浙江大学影印版
75.郑正泉.低温气液两相流动态模拟及实验研究.低温与超导,Vol.27,No.4,1999.11
76.Melo C., Ferreira R.T.S, Boabaid N.C., Goncalves J.M., Pereira R.H., Thiessen M.R.. Evaluation of HFC-600a and HFC-12 mass flow rates through capillary tubes. Proc New Applications to Reduced Global Warming and Energy Consumption Conf, Hannover Germany,1994
77.S.J.Kuehl, V.W.Goldschmidt. Modeling of steady flows of R-22 through capillary tubes. ASHRAE Transactions[R], 1996: p139~148
78.Somchai Wongwises, Worachet Pirompak. Flow characteristics of pure refrigerants and refrigerant mixtures in adiabatic capillary tubes. Applied Thermal Engineering 21(2001): p845~861
79.刘涛.压缩机构运动的动态模拟.计算机辅助设计与制造,2001.3
80.林金清,胡上序.管式换热器的动态模拟.华侨大学学报(自然科学版),Vol.7,No.1,1996.1
81.科利.,DJ,王建平.壳管式热交换器动态模拟.机电设备,1989.5
82.邹湘军.变速箱体生产线三维动态模拟图形设计.组合机床与自动化加工技术,2001.3