TY - JOUR ID - 19595 TI - Proposing a Novel Configuration for CGSs Aimed at Reducing Energy Consumption and Exergy Destruction JO - Iranian Journal of Mechanical Engineering Transactions of the ISME JA - JMEE LA - en SN - 1605-9727 AU - Arabkoohsar, A. AU - Farzaneh-Gord, M. AU - Koury, R. AD - Department of Mechanical Engineering, Minoodasht Branch, Islamic Azad University, Minoodasht, Minoodasht, IRAN AD - Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, IRAN AD - Department of Mechanical Engineering, Federal University of Minas Gerais (UFMG), BH, Brazil Y1 - 2014 PY - 2014 VL - 15 IS - 1 SP - 5 EP - 27 KW - Natural gas pressure drop station KW - Turbo-expander KW - Solar heater system KW - Net Present Value DO - N2 - A CGS is of the most important parts in natural gas transmission pipelines in which the high inlet natural gas (NG) pressure is reduced to much lower value by employing a throttling valve. This pressure drop causes hydrate forming, preventing stable NG flow through the pipeline. To prevent hydrate forming, NG is usually preheated by heaters which burns remarkable amount of NG. In this work, a novel configuration for CGSs is proposed in which solar heat is utilized to decrease fuel consumption and a turbo expander is employed to utilize the available exergy in the NG stream to produce power. Finally, an economic analysis is done on the proposed configuration based on NPV method in order to calculate optimum cost of capital and the configuration efficiency. UR - https://jmee.isme.ir/article_19595.html L1 - https://jmee.isme.ir/article_19595_ee9804666348c00b6f607b4575ed0507.pdf ER -