STUDY OF HEAT TRANSFER AND PHASE BEHAVIOUR OF MLXED REFRIGERANT IN MAIN CRYOGENIC HEAT EXCHANGER TOWARDS MAXIMIZE LNG PRODUCTION

Liquefied Natural Gas (LNG) industry has shown a significant increase in its
production due its benefit as a reliable source of energy. Increasing LNG production
means more energy is required especially for liquefaction plant. This is due to the lack
of efficiency contributed by its equipments especially by Main Cryogenic Heat
Exchanger (MCHE). In order to improve the efficiency, Mixed Refrigerant (MR) is
used in MCHE as the refrigerant. However, each component in MR has a significant
contribution on the mixture behavior and phase changing trend occurring in MCHE,
with proprietary issue of the internal structure of MCHE. In this study, heat transfer
and phase behavior of MR on the shell side of MCHE are investigated.