化工学报2025，Vol.76Issue(z1)：281-288,8.DOI:10.11949/0438-1157.20241171
二氧化碳直线压缩机气体轴承模拟
Simulation of gas bearings in carbon dioxide linear compressors
摘要
Abstract
Linear compressors offer superior performance with excellent capacity modulation,enhancing system efficiency and enabling adaptation to a wide range of operating conditions.These characteristics make them highly suitable for applications in refrigeration and cryogenic systems.Gas bearing technology facilitates oil-free lubrication and ensures high reliability in linear compressors.Carbon dioxide(CO2),as an environmentally friendly refrigerant,has a low global warming potential(GWP)and an ozone depletion potential(ODP)of zero,along with excellent thermophysical properties.In this study,a porous gas bearing model is developed using CO2 as the working fluid.Simulations are performed using Fluent software to evaluate the influence of porous material thickness,gas gap thickness,supply pressure,and eccentricity on the gas consumption and load capacity of the gas bearing.Using response surface methodology,the optimal design parameters were determined to be a gas gap thickness of 10.0-11.1 μm and a porous material thickness of 2.11-3.50 mm.These results provide a valuable reference for the design of gas bearings in CO2 linear compressors.关键词
二氧化碳/压缩机/气体轴承/优化设计Key words
carbon dioxide/compressor/gas bearings/optimized design分类
通用工业技术引用本文复制引用
孔繁臣,张硕,唐明生,邹慧明,胡舟航,田长青..二氧化碳直线压缩机气体轴承模拟[J].化工学报,2025,76(z1):281-288,8.基金项目
国家自然科学基金项目(52276023) （52276023）
