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http://dx.doi.org/10.9726/kspse.2014.18.1.051

Performance Characteristics of New LNG Liquefaction Cycles with Temperature Differences in the Heat Exchangers  

Yoon, Jung-In (Dept. of Refrigeration and Air-Conditioning Engineering, Pukyong National University)
Son, Chang-Hyo (Dept. of Refrigeration and Air-Conditioning Engineering, Pukyong National University)
Publication Information
Journal of Power System Engineering / v.18, no.1, 2014 , pp. 51-56 More about this Journal
Abstract
In this paper, the performance of the $CO_2-C_2H_6-N_2$ cascade liquefaction cycle with respect to temperature differences in the LNG heat exchangers is analyzed theoretically using HYSYS software and then compared the COP(coefficient of performance) of the cascade liquefaction cycles using $C_3H_8-C_2H_4-C_1H_4$ and $CO_2-N_2O-N_2$. In comparison of COP of three cycles, the cascade liquefaction cycles using $C_3H_8-C_2H_4-C_1H_4$ showed the highest COP. And the liquefaction cycle using $CO_2-C_2H_6-N_2$ and $CO_2-N_2O-N_2$ presented the second and third highest COP, respectively. In case of COP, the $C_3H_8-C_2H_4-C_1H_4$ cascade liquefaction cycle yields better COP. But, in terms of the environment and maintain, it is confirmed that the cascade liquefaction cycle using $CO_2-C_2H_6-N_2$ provides favorable characteristics.
Keywords
LNG cascade liquefaction cycle; Temperature difference in LNG heat exchanger; Compressor work; COP(coefficient of performance); expander work;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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