Refrigeration and/or liquefaction device using selective pre-cooling, and corresponding method
US10520225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2013 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Apr 25, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/912
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Refrigeration device comprising a working circuit in a loop for the working gas and comprising, in series: a compression station, a cold box, a system for the exchange of heat between the cooled working gas and a point of use, a system for the additional pre-cooling of the working gas leaving the compression station comprising an auxiliary cryogenic fluid volume, the cold box comprising a first cooling stage for the working gas comprising a first and a second heat exchanger, these being connected both in series and in parallel to the working circuit at the outlet of the compression station, the first cooling stage also comprising a third heat exchanger selectively exchanging heat with the auxiliary fluid, characterized in that the third heat exchanger is connected both in series and in parallel to the first and to the second heat exchangers, the working circuit comprising a recuperation pipe fitted with at least one valve and which connects the outlet of the third heat exchanger to the second heat exchanger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.