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首页> 外文会议>Purdue Compressor Technology Conference >PERFORMANCE EVALUATION OF SMALL CENTRIFUGAL COMPRESSORS FOR APPLICATION IN AIR-CYCLE POWER AND REFRIGERATION SYSTEMS
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PERFORMANCE EVALUATION OF SMALL CENTRIFUGAL COMPRESSORS FOR APPLICATION IN AIR-CYCLE POWER AND REFRIGERATION SYSTEMS

机译：小型离心压缩机的性能评价在空气循环动力和制冷系统中的应用

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The paper presents some experimental and theoretical results of the performance of small centrifugal compressors as a part of ongoing research efforts for the development of small compressors for lightweight power and refrigeration systems. A test facility was developed for the performance evaluation of compressors of different size and blade profile and measurements were performed for two compressors. Dimensional analysis was used to correlate the test data. It was found that with the increase of blade Mach number, the ratios of stagnation pressure and temperature increased monotonically for any given flow condition. For compressors of different size, the Reynolds number was found to be a single function of dimensionless flow coefficient. The test results were supplemented with the results of numerical simulation of flow in impeller blade passages. Detailed three-dimensional flow structure was predicted by solving the equations for the conservation of mass and momentum. As expected, the local fluid velocity in impeller blade passage was found to increase with the rotational speed of the compressor.
机译：本文介绍了小型离心压缩机的表现的一些实验和理论结果，作为持续研究轻量级电力和制冷系统的小型压缩机的持续研究工作的一部分。开发了一种测试设施，用于对不同尺寸的压缩机的性能评估，并且对两个压缩机进行测量。尺寸分析用于将测试数据相关联。结果发现，随着叶片马赫数的增加，对于任何给定的流动条件，滞留压力和温度的比率单调增加。对于不同尺寸的压缩机，发现雷诺数是无量纲流量系数的单一函数。测试结果补充了叶轮叶片通道中流动的数值模拟结果。通过求解质量和动量的守恒方程来预测详细的三维流动结构。如所预期的，发现叶轮叶片通道中的局部流体速度随压缩机的转速而增加。

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