Experimental study of single screw expander with different oil-gas separators in compressed air powered system

被引：7
作者：
Zhi, Ruiping [1 ,2 ]
Lei, Biao [1 ,2 ]
Zhang, Cancan [1 ,2 ]
Ji, Weining [3 ]
Wu, Yuting [1 ,2 ]
机构：
[1] Beijing Univ Technol, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing 100124, Peoples R China
[2] Beijing Univ Technol, Beijing Key Lab Heat Transfer & Energy Convers, Beijing 100124, Peoples R China
[3] InnerMongolia Elect Power Survey & Design Inst Co, Hohhot, Inner Mongolia, Peoples R China
来源：
ENERGY | 2021年 / 235卷
基金：
中国国家自然科学基金;
关键词：
Single screw expander; Compressed air-powered system; Oil-gas separator; ENERGY-STORAGE; SCROLL MACHINE; PERFORMANCE; DESIGN; EFFICIENCY; MODEL;
D O I：
10.1016/j.energy.2021.121371
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The compressed air-powered system is widely studied as a promising, environment-friendly, and high efficiency technology. The influences of centrifugal and filter oil-gas separator on the performance of single screw expanders for compressed air-powered systems are experimentally investigated. Results show that the intake volume flow rate using the centrifugal oil-gas separator is lower than that of the filter oil-gas separator. Meanwhile, the temperature difference between the inlet and outlet of a single screw expander, the average output power, and the average shaft efficiency by using the centrifugal oil gas separator is 1.88, 1.67, and 1.42 times higher than that of the filter oil-gas separator under the same working condition in this study. The maximum expansion ratio in this work is 8.5 by using the centrifugal oil-gas separator. The actual total output power, effective working time, and exergy efficiency by using the centrifugal oil-gas separator are respectively 56.67%, 4.51%, and 92.52% substantially higher than that of the filter oil-gas separator. The performance of single screw expanders in compressed air powered systems can be improved by using the centrifugal oil-gas separator. (c) 2021 Elsevier Ltd. All rights reserved.
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页数：8
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