LNG 냉열을 이용한 냉장·냉동 창고 모사에 관한 연구

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 28; no. 4; pp. 401 - 406
• Main Authors: 백영순(Youngsoon Baek), 한단비(Danbee Han), 김윤지(Yoonji Kim), 염규인(Kyuin Yeom), 신재린(Jaerin Shin)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2017
• Subjects: 기계공학; Cold energy; 모델링; LNG; 냉동 창고; Cold heat; Modeling; 냉동기; Refrigeration warehouse; 모사; Simulation; 액화천연가스; Refrigeration; 냉열
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2017.28.4.401

When Liquified Natural Gas (LNG) is vaporized into NG for industrial and household usage, tremendous cold energy was transferred from LNG to seawater during phase-changing process. This heat exchanger loop is not only a waste of huge cold energy, but will cause thermal pollution to the coastal fishery area also when cold water was re-injected into the sea. In this study, an innovation design has been performed to reclaim the cold energy for -35 to $62^{\circ}C$ refrigerated warehouse. Conventionally, this was done by installing mechanical refrigeration systems, necessitating tremendous electrical power to drive temperature. A closed loop LNG heat exchangers in series was designed to replace the mechanical or vapor-compression refrigeration cycle by process simulator. The process simulation software of PRO II with provision has been used to simulate this process for various conditions, what to effect on cold energy and used energy for re-liquefaction and evaporation process. In addition, through analysis the effect of the change of LNG supply pressure on sensible and latent heat, optimum operational conditions was suggested for LNG cold energy warehouse.