中间吸气式螺杆压缩制冷系统.doc

┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 装 ┊ ┊ ┊ ┊ ┊ 订 ┊ ┊ ┊ ┊ ┊ 线 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊安徽工业大学毕业设计(论文)任务书课题名称120kw 中间吸气式压缩制冷系统设计学 院 建筑工程学院专业班级建环 062姓 名黄平玖学 号069044184 毕业设计（论文）的工作内容: :1. 查找关于中间吸气压缩制冷系统的相关资料；2. 根据资料提出设计的初步设想；3. 确定合理可靠的制冷系统；4. 选择合适的压缩机；5. 根据设备负荷选择蒸发设备；6. 其它辅助设备的设计选择；7. 系统管道的设计和机房的布置；8. 系统运行测试的简单介绍；9. 管道的保温及刷漆；10. 图纸绘制；11. 5000 字英文翻译指导教师签字：指导教师签字： 安徽工业大学 毕业设计论文（说明书）┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 装 ┊ ┊ ┊ ┊ ┊ 订 ┊ ┊ ┊ ┊ ┊ 线 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊摘 要本文是中间吸气式压缩制冷系统的设计，主要进行了以下的工作：首先，查找了相关资料，分析了原始资料，讨论了系统方案。

其次，根据方案选择了合适的压缩机，确定了合理的、可靠的制冷系统根据设备负荷选择了蒸发设备根据所选的压缩机，进行了其它辅助设备的计算和选择因为在系统的循环中有一个中间吸气过程，所以在文中设计了一个经济器再次，进行了系统管道的设计和机房的布置最后，对系统的试压、试漏、及管道的保温问题做了简单说明关键词关键词：压缩制冷系统 中间吸气 经济器安徽工业大学 毕业设计论文（说明书）┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 装 ┊ ┊ ┊ ┊ ┊ 订 ┊ ┊ ┊ ┊ ┊ 线 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ABSTRACTThis paper highlighted the design of compression refrigeration system. Major work included: firstly, research and analysis of related materials were made, together with the discussion of system plan. Secondly, appropriate compressor was chose according to the plan, and decisions were made concerning the reasonable and reliable refrigeration system. Evaporator was chose according to the load of the equipments. Calculation and choices about other auxiliary equipment were made in accordance with the compressor chosen.An economizer was designed in this paper because an intermediate inhaling process was involved. Thirdly, design of the system pipeline and layout of the machinery-room were carried out.Lastly, brief illustration was made in terms of the pressure-testing and leakage-checking of the system as well as the heat preservation of the pipeline.Key words: Compression refrigeration system; Intermediate inhaling process; Economizer安徽工业大学 毕业设计论文（说明书）┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 装 ┊ ┊ ┊ ┊ ┊ 订 ┊ ┊ ┊ ┊ ┊ 线 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊第 I 页目 录1 绪论.................................................................12 原始资料与系统方案的确定.........................................82.1 原始资料 ..........................................................82.2 系统方案的确定 ....................................................82.2.1 确定制冷系统方案的原则 ........................................82.2.2 确定制冷系统方案的主要内容 ....................................92.3 制冷系统的确定选择 ................................................92.3.1 制冷剂种类确定 ................................................92.3.2 制冷系统供液方式的确定 .......................................102.3.3 冷却方式的确定 ...............................................112.3.4 制冷系统供冷方式的确定 .......................................122.3.5 过热度的确定 .................................................122.3.6 冷凝温度的确定 ...............................................122.3.7 过冷度的确定 .................................................132.3.8 制冷系统自控方案的确定 .......................................132.3.9 蒸发器除霜方案的确定 .........................................132.3 系统流程 .........................................................143 系统的设计.........................................................153.1 压缩机 ..........................................................153.1.1 系统循环压缩原理 .............................................163.1.2 压缩机型号的选择 .............................................183.1.3 配用电动机的选择 .............................................183.1.4 压缩机制冷量校核 .............................................183.1.5 电动机轴功率校核 .............................................193.1.6 压缩机理论排气量校核 .........................................193.2 冷凝器 ..........................................................19安徽工业大学 毕业设计论文（说明书）┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ 装 ┊ ┊ ┊ ┊ ┊ 订 ┊ ┊ ┊ ┊ ┊ 线 ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊ ┊第 II 页3.2.1 基础资料 .....................................................193.2.2 冷凝器的选择 .................................................203.3 蒸发器 ...........................................................223.3.1 选型原则 .....................................................223.3.2 传热面积 .....................................................223.3.3 计算结果 .....................................................233.3.4 冷却设备选型 .................................................233.4 经济器 ...........................................................243.4.1 设计原则 .....................................................243.4.2 设计计算 .....................................................243.5 油分离器 .........................................................293.5.1 基础资料 .....................................................293.5.2 参数确定 .....................................................293.5.3 计算结果 .....................................................303.6 贮液器 ...........................................................303.7 节流机构 .........................................................323.8 空气分离器 .......................................................333.9 冷却水泵 .........................................................333.9.1 选择原则 ......................。