| 摘要 |
<p>Methods and apparatus are disclosed for efficient cooling within air liquefaction processes with integrated use of cold recycled from a thermal energy store. There is a cryogenic liquefaction device comprising a heat exchanger 100, a first phase separator 2, a first expansion device and a first expansion turbine 5. There is a cold recovery circuit including a heat transfer fluid and an arrangement of conduits arranged such that a first portion of a pressurised stream of gas is directed through the heat exchanger, the first expansion device and the first phase separator. A second portion of the pressurised stream of gas is directed through the first expansion turbine then through the heat exchanger in a counter-flow direction to the first portion of the pressurised stream of gas. The heat transfer fluid is directed through the heat exchanger. Also disclosed is a cryogenic energy storage device using such a liquefaction device and also methods for balancing such devices.</p> |
