文章基本信息

标题：Multistage carbon dioxide compressor efficiency enhancement using waste heat powered absorption chillers
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作者：Sheikh Ehsan Ul Haq ; Fahim Uddin ; Syed Ali Ammar Taqvi 等
期刊名称：Energy Science & Engineering
电子版ISSN：2050-0505
出版年度：2021
卷号：9
期号：9
页码：1373-1384
DOI：10.1002/ese3.898
语种：English
出版社：John Wiley & Sons, Ltd.
摘要：The performance of a multistage centrifugal compressor is highly influenced by the ambient conditions, especially during the summer seasons; their capacity shrinks and thus the power requirement for compression will increase. The prime cause of these constraints is the interstage cooling limitations. This study simulates various suction conditions of a multistage compressor on Aspen HYSYS® and suggests its debottlenecking by making the suction temperatures comparable to winter seasons. This is achieved by installing an additional exchanger at the downstream of each interstage cooler, cooling down the gas further by using absorption refrigeration chillers. These chillers are powered up by the waste heat recovered from the exhaust steam coming from the prime mover, steam turbine, of the same compressor. This modification will save a considerable amount of power (663 kW), net savings (Gross Savings – OPEX: 72 289 $/y), and reduce the carbon footprint (954 ton/y) of the overall process.