A composite structure printed circuit board type lng gasifier core with thermoelectric generator

Abstract

A composite structure printed circuit board type LNG vaporizer core with a thermoelectric generator, comprising straight rib passages and airfoil rib passages that are alternately stacked up and down, the straight rib passages from top to bottom sequentially include a first baffle, The straight rib plate and the first thermoelectric power generation module, the airfoil rib channel from top to bottom sequentially includes the second partition plate, the airfoil rib plate and the second thermoelectric power generation module; The airfoil rib channel is the cold fluid channel through which LNG flows. The thermoelectric generator is integrated into the printed circuit board LNG vaporizer, and the tapered longitudinal vortex generator and the t-cell structure are used to separate the LNG vaporizers. Propane or low boiling point organic working medium side straight rib channel and LNG side airfoil rib channel are used for heat transfer enhancement. While ensuring the efficient gasification of LNG, part of the LNG cold energy is converted into electric energy, which has a simple and compact structure and high heat transfer efficiency. , energy saving and environmental protection and the advantages of strong applicability.

Description

technical field [0001] The invention relates to the technical field of heat exchange devices, in particular to a composite structure printed circuit board type LNG vaporizer core with a thermoelectric generator. Background technique [0002] With the rapid development of the offshore natural gas industry, liquefied natural gas (LNG) floating storage and regasification unit (FSRU, Floating Storage and Regasification Unit) has received increasing attention. As the key gasification equipment of FSRU, traditional heat exchangers face many challenges in terms of heat exchange efficiency, weight, volume and sloshing resistance. As a compact micro-channel heat exchanger, the printed circuit board heat exchanger (PCHE) has the advantages of small size, light weight, high heat exchange efficiency, safety and reliability, and when used as an LNG vaporizer, its heat exchange efficiency is affected by the sloshing of the hull. The impact is small, so it has broad application prospects ...

AI Technical Summary

Problems solved by technology

[0004] However, most of the existing PCHE research is based on the background of nuclear reactors, solar thermal power generation and other fields, and most of the working fluids are supercritical carbon dioxide, helium, etc., and the PCHE channel structure for FSRU still needs to be improved.

At the same time, no feasible LNG cold energy utilization method for FSRU has been seen

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