500吨土建式冷藏库设计+文献综述
关键词：制冷系统；活塞式制冷压缩机；冷负荷
Summary
Abstract: This design is located in Shanghai, the the 500t integrated cold storage refrigeration system design. The purpose of this design is to be learned into practice, knowledge of a more solid, better able to integrate into society. In this design, the first cold storage capacity calculation, the volume of 2500m ³ pided into frozen between 3 and thermal calculations, have the cooling consumption of cooling equipment for Kw refrigeration machine the total load of Kw, and then the refrigeration equipment and its auxiliary equipment selection, and finally decided to use a reciprocating refrigeration compressor, the choice of four; condenser with evaporative condensers. Cold cooling process design is the size of the cooling load of the device according to the cold and cold nature, evaporator and reasonable consideration of cold airflow organization, and ultimately select the top row of tubes, and cooling system pressure test, leak testing, and pipe insulation to do the simple instructions.
KeyWords: refrigeration systems；piston refrigeration compressors；cooling load
目 录
主要符号表 1
1. 引言 2
2.设计基本资料 12
2.1设计目的 12
2.2设计题目 13
2.3设计条件 13
3.热工计算 13
3.1冷藏库尺寸计算 13
3.2冷库文护结构的传热系数计算 14
3.3冷库围护结构传热引起耗冷量 16
3.3.1冷库围护结构的传热面积 16
3.3.2 冷库围护结构的耗冷量计算 （见表1-3） 18
3.4食品冷加工的耗冷量 19
3.5通风换气的耗冷量 20
3.6经营操作耗冷量 20
3.7电动运行耗冷量 21
3.8总耗冷量 21
3.8.1库房冷却设备的总负荷 21
3.8.2制冷机器的总负荷 21
4.制冷方案的确定 23
4.1 制冷系统压缩级数及压缩机类型的确定 23
4.2 制冷剂种类及冷凝器类型的确定 24
4.3 制冷系统供液方式的确定 24
4.4 冷间冷却方式的确定 25
4.5 冷间冷却设备和融霜方式的确定 25
4.6流向确定 25
4.7油分离器的布置 25
4.8冷库自动调节控制系统 26
5.制冷设备计算选型 27
5.1制冷压缩机的选择计算 27
5.2冷凝器的计算选用 30
5.3中间冷却器的计算选用 30
5.4油分离器的计算选用 31
5.5放空气器的计算选用 31