BCD-550WT间冷式家用冰箱制冷系统设计.docx

PAGE \* MERGEFORMAT 1 目 录 摘 要···················································3 关键词···················································3 ABSTRACT···············································4 KEY WORDS············································4 前言······················································5 1. 方案论证···············································6 流程选择···········································6 冷凝器选择·········································6 蒸发器选择·········································7 制冷剂选择·········································7 节流装置选择·······································7 压缩机选择········································7 过程论述···············································8 2.1电冰箱布置与热负荷计算······························8 2.1.1电冰箱布置·····································8 2.1.2电冰箱热负荷的计算·····························10 2.1.3箱体外表面凝露校核·····························12 2.2制冷循环热力计算···································13 2.2.1制冷系统的压焓图································13 2.2.2制冷系统的额定工况······························13 2.2.3热物性参数列表································14 2.2.4循环各性能指标计算·····························14 2.3冷凝器设计计算·····································15 2.4蒸发器设计计算·····································20 2.5压缩机热力计算及选型·······························27 2.6毛细管的计算及选型·································29 2.7结果分析···········································30 3. 结论················································30 参考文献············································30 附录················································32 附录一 冰箱系统布置图································32 附录二 冷凝器装配图··································32 附录三 计算程序·····································33 致谢················································34 BCD-550WT间冷式家用冰箱制冷系统设计 摘 要 随着人们生活水平的日益提高，家用冰箱已经成为家用冷冻冷藏的必备设备，同时节能和环保已经成为冰箱行业发展的主流。本论文详细的说明了如何设计一台550L的间冷冰箱的步骤和相关的计算方法。例如绝热层厚度的选择、冰箱外壁面的防露校核、制冷系统的热力计算、压缩机的选型、蒸发器和冷凝器的热力计算及毛细管长度的计算。 另外本文还对未来电冰箱的发展趋势、技能技术也作了一定介绍，指出家用电冰箱应该向着节能化、环保化、智