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论文类型：期刊论文

发表时间：2017-01-01

发表刊物：Journal of Harbin Institute of Technology (New Series)

收录刊物：Scopus

卷号：24

期号：1

页面范围：43-50

ISSN号：10059113

摘要：In order to improve efficiency of a combined power system in which waste heat from exhaust gas could be efficiently recovered and cold energy of liquefied natural gas (LNG) could be fully utilized as well. A system simulation and thermodynamic analysis were carried out, the Kalina cycle was reorganized by changing the concentration of   basic composition  , so that a better thermal matching in the heat exchanger could be obtained and the irreversibility of the system was decreased. It was found that the Kalina cycle generally used in the bottom of combined power cycle could also be used to recover the cold energy of LNG. The results show that the exergy efficiency of 42.97% is obtained. Compared with the previous system attained the exergy efficiency of 39.76%, the improved system has a better performance. ? 2017, Harbin Institute of Technology. All right reserved.