As the energy markets adjust to the increasing demand on liquefied natural gas (LNG) and
growing global warming concerns, a compelling need arises to operate existing LNG plants
as efficiently as possible. Cryogenic systems, such as those used for natural gas (NG)
liquefaction, are very complex. This makes optimizing their performance a frustrating task. In
this paper, we propose a simple and systematic optimization approach for cryogenic
processes characterized by large numbers of independent variables and sophisticated heat …