| 摘要: |
| 自复叠制冷系统广泛应用于小型制冷装置，制取-40℃～-150℃之间的低温环境。套管式冷凝器在自复叠制冷系统中常用作冷凝设备，其特性与结构深刻地影响着制冷装置系统。自动复叠制冷系统用套管式冷凝器为研究对象，研究其冷凝过程特性和结构尺寸；在冷凝压力2.0 MPa，当R600a和R23 混合工质的质量分数为7:3时，计算其冷凝负荷为1610W；根据混合工质和冷却水的换热系数，确定套管式冷凝器长度为4.842m。最后对不同冷凝水流量的吸气温度、排气温度、蒸发温度，以及冷却水进出口温度进行了对比分析。 |
| 关键词: 自动复叠制冷 混合工质 冷凝器设计 套管式冷凝器 |
| DOI： |
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| 基金项目:国家自然科学基金（51176124）资助项目。 |
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| Study on Application of Double-pipe Condenser for Auto-cascade Refrigeration |
| Rui Shengjun,Zhang Hua,Wang Hongnian,Li Juanjuan |
| (Institute of Refrigeration Technology, University of Shanghai for Science and Technology;Vehicle & Motive Power Engineering College, Henan University of Science and Technology;Technology R & D Center, Haier Group) |
| Abstract: |
| Auto-cascade refrigeration system is widely used to obtain low temperature environment between -40 ℃ ~ -150 ℃. Double-pipe condenser is commonly regarded for condensing equipment in auto-cascade refrigeration system, its characteristics and structure affects refrigeration equipment system deeply. An auto-cascade refrigeration system with double-pipe condenser as the research object, the condensing process characteristics and structure dimension were studied. At the condensing pressure of 2.0 MPa, the condensing load was 1610W when the mass fraction ratio of R600a and R23 was 7:3. The structure size of double-pipe condenser was 4.842m based on the heat transfer coefficient of mixed refrigerant and cooling water. At the end of the paper the suction temperature, exhaust temperature, evaporation temperature in different condensing water flow, and inlet and outlet temperature of cooling water were analyzed. |
| Key words: auto-cascade refrigeration mixed refrigerant condenser design double-pipe condenser |
