A novel design of cold energy cascade utilization with advanced peak-shaving strategy integrated liquid air energy storage. (10th December 2021)

• Record Type: Journal Article
• Authors: Ouyang, Tiancheng; Xie, Shutao; Wu, Wencong; Tan, Jiaqi
• Is Part Of: Journal of cleaner production. Volume 327(2021)
• Publication Date: 2021-12-10
• Subjects: Liquefied natural gas -- Liquid-compressed natural gas station -- Cold energy utilization -- Genetic algorithm -- Peak-shaving strategy; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2021.129493
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: For the sake of alleviating the pressure of energy and environment, compressed natural gas vehicle has become an important development direction of the automobile industry in the world with its advantages of low cost and restraining greenhouse effect. However, the operation of liquid-compressed natural gas station will inevitably produce boil off gas and gasoline vapor, which will cause great pollution to the environment if discharged into the atmosphere. Furthermore, in the face of increasing number of liquid-compressed natural gas stations, how to efficiently recover the cold energy released in the process of liquid natural gas regasification is a huge challenge. In this paper, a novel design integrating boil off gas and gasoline vapor recovery, liquid air energy storage and parallel Rankine cycle is proposed to recover cold energy of LNG in different temperature ranges for liquid-compressed natural gas station. The optimal ratio of binary mixtures are selected by genetic algorithm for parallel Rankine cycle, and the result shows that compared with pure working fluid, the total net power output of binary mixtures are increased by 6.62% to 3028.01 kW. Besides, an advanced peak-shaving strategy is proposed to satisfy the electricity demand of users at different time periods. The result of economic analysis exhibits that the payback period of the system is 5.24 years. This novel design not only provides a new idea for the recovery of boil off gas and gasoline vapor, but also complements the blank in the filed of cold energy utilization of liquid-compressed natural gas station. Graphical abstract: Image 1 Highlights: A new design of cold energy recovery is proposed for liquid-compressed natural gas station. This system can not only recover boil off gas and gasoline vapor, but also generate electricity. Peak-shaving strategy integrated liquid air energy storage is proposed for allocating electricity. Total net work is increased by 6.62% through the optimization of genetic algorithm.