摘要：本人的毕业设计题目为750t土建式冷库设计。首先为满足750t土建式冷库的设计要求，本人根据冷藏吨数的要求和冷藏库的功能等确定了冷藏间的间数及平面尺寸和冷库高度。在建筑材料方面，通过查阅资料，认识到冷库主要采取砖墙、钢筋混凝土梁、柱和板建成。隔热层外面的墙采取聚氨酯现场发泡，冻结间内则使用墙贴的软木。按照冷库平面设计图纸，计算并确定冷库的围护布局的热负荷。围护布局的各个防潮层蒸汽渗透阻要满足要求。在制冷方向，思量到环保和经济问题则采纳氨制冷剂；因为氨泵供液相对稳定，所以此次冷库设计也选用泵供液。库内冷分派设备采用冷风机。此次设计的冷库为食品猪肉的冻结与冷藏，所以此次设计不考虑冷藏间和冻结间通风换气，但是地坪则采用炉渣并装设通风管。基本方案确定后，计算出冷库的冷负荷，并根据冷库的冷负荷选定制冷压缩机，以及冷风机、冷凝器、中间冷却器等各种设备。在完成选型后，进而进行管道的布置，机房的布置等等。69494

毕业论文关键词：管道设计；冷凝器；制冷压缩机；土建式冷库；冷库负荷的计算

Design of 750t civil cold storage

Abstract：I graduated from the design of the title of the 750t civil cold storage design. First, to meet the design requirements of 750t construction type cold storage, I determined the number of store rooms and refrigerated storage plane size and height according to the tonnage requirements and cold storage function. In terms of building materials, through access to information, to understand the main use of brick walls, reinforced concrete beams, columns and plates built. On the use of polyurethane foam insulation layer, use the cork wall in freezing room. According to the design drawings of cold storage, calculate and determine the thermal load. The steam permeability resistance of each moisture proof layer of the enclosure structure meets the requirements. In terms of refrigeration, taking into account the environmental and economic issues, the use of ammonia refrigerant; ammonia pump supply is relatively stable, so the design is also used for liquid pump. Cold air distribution equipment used in the library. The design of the cold storage for the frozen and refrigerated food, so the design does not consider the cold storage and freezing room ventilation, but the floor is the use of slag and ventilation pipe installed。After the basic scheme is determined, the cooling load of the cold storage is calculated, and the refrigerating compressor is selected according to the cold load of the cold storage. After the completion of the selection, and then the layout of the pipe, room layout, etc..

【Keywords】:  Civil engineering type refrigerator ,  Cold storage load calculation , Refrigeration compressor , Piping design ,  Condenser .

目录

750t土建式冷库设计 1

摘要： 1

Abstract： 1

目录 2

1绪论 3

1.1课题的研究背景、目的和意义 3

2总体方案设计 5

2.1冷库的布置 5

2.2冷库的选材 6

2.2.1 隔热材料的选择 7

2.2.2防潮层的材料选择 7

2.2.3制冷方案的选定 7

3 冷库设计计算 11

3.1 设计条件： 11

3.2 设计计算