1、冷藏库尺寸计算562.4围护结构换热系数的确信62.5确信围护结构绝热层厚度63.库房冷负荷的计算围护结构热流量11货物热流量14电机运转热流量13冷间操作热流量133.5库房冷却设备冷负荷173.6冷间机械负荷184.设备选型冷凝温度与蒸发温度的确信194.2制冷原理的热工计算204.3紧缩机的选择计算224.4冷凝器的选择计算244.5冷风机选择计算254.6中间冷却器的选择计算274.7油分离器的选择计算284.8高压贮液器的选择计算294.9低压循环贮液器的选择计算294.10集油器的选择计算 295.1氨液密度的计算305.2供入库房中氨的计算流量316.库制冷系统的管径计算6.1管
2、径确信316.2 制冷系统保温设计计算 337. 设计及施工所注意的问题7.1管道布置的要求347.2管道布置的原那么357.3 管道的隔热367.4机房布置的要求367.5 要紧设备的布置377.6 其他设备的布置387.77 管道设备绝热做法39参考文献40致谢 41摘要本设计为XX市1000吨低温冷库设计,为生产性冷藏库,冷库已成为日常生活中不可缺少的食物加工和贮藏的设施,其系统复杂且所用工质特殊,本设计采纳氨作为工质,由于其本身的有毒性,冷库系统平安生产的尤其很需要。冷库功能是专门冻藏通过冷加工的肉类,以工调剂淡旺季节、保证市场供给、提供外贸出口和做长期贮备之用。紧缩式制冷是依照制冷原
3、理将紧缩机、冷凝器、节流阀和蒸发器,和为了使制冷效能更高、运行更平安的辅助设备(如油分离器、贮液器、气液分离器、循环储液桶、集油器、放空气器、阀件、仪表等)用管道连接组成的一个闭合制冷循环。在设计进程中,从制冷紧缩机的选择到制冷系统各辅助设备的选型和各库房制冷方式的选择上都做了优化设计,依照项目建设场地的实际情形,综合分析各制冷系统在建设场地客观条件下的可行性运行情形,最后本着经济、适用、有效、结构紧凑、建筑美观大方的原那么设计出图,包括制冷系统原理图、建筑平面图、设备平面布置图、机房管道平面布置图、库房管道平面布置图、机房剖面图、冷间剖面图、管道设备保温图、支架大样图、冷凝器、气液调剂站大样
4、图、设备基础图。关键词:紧缩 制冷 冷藏库 节流 中间完全冷却Abstract his design for the Zhangjiakou some 1000 ton low temperature cold storage design, was the production freezer storage, the cold storage has become the facility which the essential food processing and stored for the daily life in, its system complex also used th
5、e working substance to be special, this design used the ammonia to take the working substance, as a result of its itself virose, the cold storage system safety production needed especially very much. The cold storage function is deep-freezes specially after the cold finishing meats, adjusts the pale
6、 prosperous season by the labor, guaranteed the market supplies, provide the foreign trade exportation and make using of the long-term store up. The compression type refrigeration is according to the refrigeration principle the compressor, the condenser, the throttle valve and the evaporator, as wel
7、l as in order to cause the refrigeration potency to be higher, to move a safer supporting facility (for example oil separator, liquid reservoir, gas fluid separator, circulation stock solution barrel, oil collector, puts air, pipe accessory, measuring appliance and so on) connects the composition wi
8、th the pipeline a closed refrigeration cycle. In the design process, to the refrigeration system each supporting facility shaping as well as in various storehouses refrigeration way choice has all made the optimized design from the refrigeration compressor choice, constructs the location according t
9、o the project the actual situation, the generalized analysis each refrigeration system in constructs under the location during detachment condition the feasible movement situation, finally in line with the economy, is detail drawingThe equipment base compilation. Keywords: Compression Freezer Thrott
10、le Complete cooling of the middle suitable, practical, the structure compact, the construction elegant appearance principle designs the chart, including refrigeration system schematic diagram, construction plan, equipment floor-plan, engine room pipeline floor-plan, storehouse pipeline floor-plan, e
11、ngine room sectional drawing, cold sectional drawing, pipe-line equipment heat preservation chart, support detail drawing, condenser circulating water diagram, gas fluid regulating station 1 设计大体资料1.1设计目的:毕业设计是工科类专业教学的重要环节之一,是对学生在校所学理论知识的全面总结和综合查验。通过毕业设计初步了解建筑环境与设备工程专业的设计内容、程序和大体原那么,了解设计计算的步骤和方式,培育学
12、生的识图和制图能力,引导学生学会查找设计标准和设计手册,初步了解本专业的要紧设备、附件及材料。参加制冷技术毕业设计的学生,通过设计要求把握有关冷藏库有关制冷工艺设计的内容、程序及大体原那么和制冷工艺设计计算方式并提高绘制设计图纸的能力。在设计进程中尽可能联系当前技术进展和环保要求,参照新标准进行设计,使设计达到技术、经济、运行治理的合理、可行和平安靠得住。1.2设计题目:XX头市肉类冷藏库设计1.3设计指标:1000吨冷藏库1.4设计地址室外气象参数:夏日室外计算干球温度:夏日空气调剂日平均温度为 26 夏日通风平均温度为 27 夏日空气调剂室外计算湿球温度22 室外计算相对湿度:最热月月平均相对湿度为 67 % 夏日通风相对湿度为 51 %1.5 冷藏库室内设计参数库房名称相对湿度温度低温冷藏间90%-18 oC冻结间-23 oCXX室外67%26 oC2 冷藏库热工计算2.1依照冷藏库设计吨位将其分派如下: 冷藏库:1000吨 分为三个冷藏间 每间吨位333吨 依照公式: (2-1) 式中G冷库计算吨位(t); V1冷藏间的公称体积(m3); 冷藏间的体积利用系数; s食物的计算密度(kg/m3)s=400 kg/m3=0.55取得V=4545鉴于建筑上对墙间距以6为模数的规定将冷藏间分为三间,每间的公称体积定为长宽高=21184 2.3库房平面图设计如下 依照
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