ABSTRACT

Natural gas is one of the important energy resources and the consumption is rapidly increasing worldwide. In many cases, pipe networks are used for the gas supply to consumers. In case of Korea, natural gas had been supplied from only one LNG terminal located in Pyongtaek (Terminal 1), however due to the other terminal's operation in Inchon (Terminal 2) since 1997, it is currently being supplied from two LNG terminals. Also, pipe networks for the gas supply to consumers are being continuously extended nationwide and another terminal is being constructed in southern area (Tongyong; Terminal 3) to satisfy the gas demand increase. Based on these situations, more systematic gas supply planning considering operating efficiency based on operating cost and safety is required than ever. In general, commercial foreign simulation programs are being utilized in Korea's pipe industry for the gas supply planning. However the critical problems are that they are very expensive and utilization efficiency of operators is in very low level. Thus, a pipe network analysis program that is not expensive and very well understandable to the operators is inevitable. For the solutions of the requirements, a program that is capable of unsteady gas flow analysis in pipe networks (GNAP Version 1.0) has been recently developed. This study can contribute to 2 technical independence from foreign programs and maximization of operators' utilization and understanding in Korea's pipe industry. As a remark, this paper was written based on a research project directed by author.

INTRODUCTION

Natural gas is one of the important energy resources and the consumption is rapidly increasing worldwide. In many cases, pipe networks are used for the gas supply to consumers. In case of Korea, natural gas had been supplied from only one LNG terminal located in Pyongtaek (Terminal 1), however due to the other terminal's operation in Inchon (Terminal 2) since 1997, it is currently being supplied from two LNG terminals. Also, pipe networks for the gas supply to consumers are being continuously extended nationwide and another terminal is being constructed in southern area (Tongyong; Terminal 3) to satisfy the gas demand increase. Based on these situations, more systematic gas supply planning considering operating efficiency based on operating cost and safety is required than ever. In general, commercial foreign simulation programs are being utilized in Korea's pipe industry for the gas supply planning. However the critical problems are that they are very expensive and utilization efficiency of operators is in very low level. Thus, a pipe network analysis program that is not expensive and very well understandable to the operators is inevitable. For the solutions of the requirements, a program that is capable of unsteady gas flow analysis in pipe networks (GNAP Version 1.0) has been recently developed. The GNAP is a program using 2- dimensional CAD system and it is composed of 1) configurations input of pipe networks, 2) gas loads and sendout setup, 3) pipe network analysis, and 4) post-processing of simulation results.

This content is only available via PDF.
You can access this article if you purchase or spend a download.