Composite structure printed circuit board type LNG vaporizer core with thermoelectric generator

Abstract

A composite structure printed circuit board type LNG vaporizer core with a thermoelectric generator comprises straight rib channels and wing-shaped rib channels which are alternately stacked up and down, wherein each straight rib channel sequentially comprises a first partition plate, a straight rib plate and a first thermoelectric generation module from top to bottom, and the wing-shaped rib channel sequentially comprises a second partition plate, a wing-shaped rib plate and a second thermoelectric power generation module from top to bottom. The flat rib channel is a hot fluid channel through which propane or a low-boiling-point organic working medium flows, and the wing-shaped rib channel is a cold fluid channel through which LNG flows. A thermoelectric generator is integrated in a printed circuit board type LNG vaporizer, and a tapered longitudinal vortex generator and a dimpled structure are adopted to perform heat transfer enhancement on the propane or low-boiling-point organic working medium side straight rib channel and the LNG side wing type rib channel respectively, so that part of LNG cold energy is converted into electric energy while efficient gasification of LNG is ensured, and the device has the advantages of being simple and compact in structure, high in heat transfer efficiency, energy-saving, environment-friendly and high in 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 gasifier core with a thermoelectric generator. Background technique [0002] With the rapid development of offshore natural gas industry, liquefied natural gas (LNG) floating storage and regasification unit (FSRU, Floating Storage and Regasification Unit) has received more and more attention. As the key gasification equipment of FSRU, the traditional heat exchanger faces many challenges in terms of heat exchange efficiency, weight, volume and sloshing resistance. As a compact microchannel heat exchanger, printed circuit board heat exchanger (PCHE) has the advantages of small size, light weight, high heat transfer efficiency, safety and reliability, etc., and when it is used as an LNG vaporizer, its heat transfer efficiency is affected by the sloshing of the ship. The impact is small, so it has a broad application...

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

Images