Experimental investigation on twin screw refrigeration compressor with different capacity control methods

被引:12
|
作者
Sun, Shizhong [1 ]
Xing, Ziwen [1 ]
Li, Yanpeng [1 ]
Su, Po Chia [2 ]
Chen, Wenqing [3 ]
机构
[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Peoples R China
[2] Hanbell Precise Machinery CO LTD, R&D Dept, Taoyuan, Taiwan
[3] Xi An Jiao Tong Univ, Suzhou Acad, Suzhou 215123, Peoples R China
基金
中国国家自然科学基金;
关键词
Twin screw refrigeration compressor; Noise characteristics; Pressure fluctuation; Thermodynamic performance; Part-load condition; PERFORMANCE;
D O I
10.1016/j.ijrefrig.2021.04.027
中图分类号
O414.1 [热力学];
学科分类号
摘要
Slide valve and variable-speed control are commonly used in twin screw refrigeration compressors independently to regulate the refrigerating capacity of the compressor. In this paper, the pressure fluctuation characteristics, noise characteristics, and thermodynamic performance of a twin screw refrigeration compressor with slide valve and variable-speed control at the same volume flow rate are tested and compared. The relationship among pressure fluctuation, noise characteristics, and thermodynamic performance is investigated, when the evaporating temperature and the condensing temperature are set to 6 degrees C and 36 degrees C, respectively. Results show that the compressor with variable-speed control has better comprehensive characteristics than that with slide valve. The noise of the compressor with variable-speed control is lower than that of the compressor with the slide valve and the reduction of noise reaches 10.52 dB(A) at the volume flow rate of 381.07 m(3).h(-1). The thermodynamic performance under part-load conditions of the compressor with variable-speed control is better than that of the compressor with slide valve. The improvement of COP and total efficiency reaches 33.57% and 38.16% at the volume flow rate of 381.07 m(3).h(-1). (C) 2021 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码:370 / 381
页数:12
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