June 28, 2015 to July 2, 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Proposed Thermodynamic Nomenclature of Cryogenic Refrigeration Cycles for Liquefaction of Natural Gas

Jun 29, 2015, 2:00 PM
Exhibit Hall (Arizona Ballroom)

Exhibit Hall (Arizona Ballroom)

Poster Presentation CEC-01 - Large-Scale Refrigeration and Liquefaction C1PoG - Thermal Analysis and Design


Ms Hye Su Lim (Hong Ik University)


A new and systematic naming method is proposed as academic nomenclature of cryogenic refrigeration cycles for liquefaction of natural gas. Over decades, a large number of LNG processes have been designed and patented, even though only a few are operational in practice, including SMR (single mixed-refrigerant), C3-MR (propane-precooled mixed-refrigerant), cascade, or AP-X processes. These processes have been named and widely called by the refrigerants used in the cycles, by a technical term, or even by a proper noun (or a “product” name). In order to identify and reasonably compare the thermodynamic nature, it is necessary to name the closed refrigeration cycles more logically from an academic point of view. The nomenclature is composed of three components: (1) the refrigerant (methane, nitrogen, mixed-refrigerant, etc.) (2) the number of stages (1, 2, 3, etc.), and (3) the cycle type (JT, Brayton, Claude, etc.) In addition, the series or parallel combination of two or more cycles is denoted by symbols (+, //, etc.). Abbreviation (with “factorization” formula) is also presented for short and convenient notation. *This research is supported by a grant from the LNG Plant R&D Center funded by the Ministry of Land, Infrastructure and Transport (MOLIT) of Korean government.*

Primary author

Ho-Myung Chang (Hong Ik University)


Ms Hye Su Lim (Hong Ik University) Mr Kyu Sang Cha (Korea Gas Corporation)

Presentation materials