An environmentally friendly electrochemical refrigerant compressor

https://techxplore.com/news/2023-11-environmentally-friendly-electrochemical-refrigerant-compressor.html

"no moving parts and no need for lubricants, overcoming shortcomings of mechanical compressors... constant flow rate can be provided at various pressure ratios with electrochemical compressors... enables high COP heat pump... desired flow rate and pressure obtained by stacking... compresses refrigerants through ion movement by charging the ion exchange membrane with DCvoltage, using hydrogen as carrier gas... isothermal compression by applying multi-layer freezing where cells accumulated in a stack"

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