高效气波冷凝装置流动及热力学特性

发布时间：2018-05-21 13:07

本文选题：气波冷凝 + 流体动力学　；参考：《化工学报》2017年08期

【摘要】：利用空气动力学理论,建立高效气波冷凝波图,采用二维周期性边界模型,以理想气体为介质对高效气波冷凝分离装置流场、温度场进行数值模拟,优化气波冷凝波图,预估装置内部结构参数。建立冷凝系统热力循环模型,对其热力学特性进行分析。同时搭建实验平台,对影响系统的主要参数进行了研究。实验结果表明:利用激波增压回收高压气源压力能,可以有效恢复脱湿干气压力能。通过回收脱湿干气冷量,预冷下一循环高压进气,可以获得更低冷凝温度。该装置制冷效率存在单值最优点,高效气波冷凝实际内部膨胀效率约为63%,脱湿干气压力能最高恢复90%,且随着制冷压比增大而降低。
[Abstract]:Based on the aerodynamics theory, the high efficiency gas wave condensing wave diagram is established. The two dimensional periodic boundary model is used to simulate the flow field and temperature field of the high efficiency gas wave condensing separation device with ideal gas as the medium, and the gas wave condensing wave diagram is optimized. The internal structure parameters of the device are estimated. A thermodynamic cycle model of condensing system is established and its thermodynamic characteristics are analyzed. At the same time, the experimental platform is built to study the main parameters that affect the system. The experimental results show that the pressure energy of dehumidified dry gas can be recovered effectively by using shock wave supercharge to recover the pressure energy of high pressure gas source. The lower condensation temperature can be obtained by recovering the desiccant dry air cooling rate and precooling a cycle of high pressure air intake. The refrigeration efficiency of the device has the advantages of single value, the actual internal expansion efficiency of high efficiency gas wave condensation is about 63, the maximum dry gas pressure energy of dehumidification is 90%, and it decreases with the increase of refrigeration pressure ratio.
【作者单位】：大连理工大学化工机械学院;
【基金】：国家自然科学基金项目(21476036) 中国国家科技重大专项(2016ZX0566005-002)~~
【分类号】：TQ051.61

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