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Small Business Innovation Research/Small Business Tech Transfer

Active Gas Regenerative Liquefier, Phase I

Completed Technology Project

Project Introduction

Active Gas Regenerative Liquefier, Phase I
We offer a novel liquefier that has the potential to simultaneously increase thermodynamic efficiency and significantly reduce complexity. The ?active gas regenerative liquefier? (AGRL) uses an array of discrete micro compressor-expander units in a periodic heat exchanger to accomplish extremely efficient liquefaction of hydrogen and other cryogenic fluids. When an array of these units are combined into a highly effective regenerator with excellent heat transfer, low pressure drop, and low longitudinal conduction, the potential for a extremely efficient regenerative refrigerator and/or liquefier is created. The capability to directly couple the compression of a working gas within a unit with the simultaneous expansion of a working gas within the same unit allows distributed work input and recovery from near ambient temperature to cryogenic temperatures as low as ~20 K. By using this micro compressor-expander unit, the net work input is reduced substantially to that required for a very efficient refrigeration cycle, no matter what the temperature span of the liquefier. More »

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This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.