Design and Optimization of a Pure Refrigerant Cycle for Natural Gas Liquefaction with Subcooling

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• 作者：Inkyu Lee ; Kyungjae Tak ; Hweeung Kwon ; Junghwan Kim ; Daeho Ko ; Il Moon
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：June 25, 2014
• 年：2014
• 卷：53
• 期：25
• 页码：10397-10403
• 全文大小：442K
• ISSN：1520-5045

文摘

Natural gas liquefaction is an energy-intensive process in which energy reduction is a main concern. This research focused on minimizing the energy of the pure refrigeration cycle in natural gas liquefaction by improving the subcooling system. To minimize energy consumption, a pure refrigeration cycle with a subcooling system was simulated, and the result was thermodynamically analyzed. The thermodynamic analysis identified an opportunity to reduce the energy consumption, and a new design was proposed for the subcooling system. In addition, the proposed design was deterministically optimized to find the optimal compressing ratio, temperature, pressure, and flow rate. As the result, the optimal operating conditions were determined, and the energy consumption was reduced by 17.74%.