Feasibility analysis for intermediated fluid type LNG vaporizers using R32 and R410A considering fluid properties

A combined computational-experimental study of liquified natural gas vaporizers based on thermo-solid coupling

“…The designed vaporizer was then integrated into an inclusive utilization system of LNG vaporization cold energy. Another similar intermediate fluid vaporizer was presented by Higashi et al using refrigerants R32 and R410A, which is able to utilize LNG cold energy for a cryogenic power generation [9]. Analysis results showed that the selected refrigerants could increase the boiling and condensation heat transfer rate in tube bundles; therefore, enhance the vaporization rate of the entire system.…”

Investigation of hydrodynamic and thermodynamic processes in the liquefied natural gas transportation and regasification system

“…One set of heat exchangers is employed for the heating medium, while another set is dedicated to LNG vaporisation. In terms of technical aspects, the intermediate fluid selection has to be considered according to the following criteria: sufficient latent heat and environmental regulations such as ozone depletion potential and global warming potentials (Higashi et al, 2020). The indirect heat transfers between the seawater and LNG also allow for the avoidance of seawater freezing and improve heat transfer coefficient and operation reliability.…”

“…Fig.1.1. LNG vaporisers: a -Ambient Air Vaporiser(Mokhatab et al, 2015); b -Open Rack Vaporiser(Qi et al, 2019); c -Intermediate Fluid Vaporiser(Higashi et al, 2020); d -Submerged Gas Vaporiser(Kanbur et al, 2017) …”