Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/147694
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Enhancement of the liquefaction rate in small-scale helium liquefiers working near and above the critical point |
Autor: | Rillo, Conrado CSIC ORCID ; Lozano, María Pilar; Sesé Monclús, Javier CSIC ORCID; Warburton, Richard J.; Reineman, Richard C. | Fecha de publicación: | 2015 | Editor: | American Physical Society | Citación: | Physical Review Applied 3(5): 051001 (2015) | Resumen: | Low-temperature research laboratories with typical liquid-helium consumption of the order of tens of liters per day have greatly benefited from the recent development of small-scale liquefiers. In general, these liquefiers are based on Gifford-McMahon or pulse-tube closed-cycle refrigerators with a nominal cooling power ranging from 1 to 1.5 W at 4.2 K. The liquefaction rate for these cryocooler-based liquefiers depends on the pressure at which the helium is liquefied, although the final user conditions of the produced liquid helium are always atmospheric pressure and boiling temperature (e.g., 4.2 K at 100 kPa). Here, we show a systematic study on this effect, in which an enhancement in excess of 70% in liquefaction rate is found experimentally for pressures near and above the critical point of helium (220 kPa). We propose that the underlying mechanism for the liquefaction enhancement is based on the increase in cryocooler cooling power with temperature and the decrease of the helium enthalpy with pressure. | Descripción: | Letter.-- et al. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevApplied.3.051001 | URI: | http://hdl.handle.net/10261/147694 | DOI: | 10.1103/PhysRevApplied.3.051001 | Identificadores: | doi: 10.1103/PhysRevApplied.3.051001 e-issn: 2331-7019 |
Aparece en las colecciones: | (ICMA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
AboveCriticalPoint.pdf | 1,25 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
8
checked on 06-abr-2024
WEB OF SCIENCETM
Citations
6
checked on 28-feb-2024
Page view(s)
301
checked on 19-abr-2024
Download(s)
183
checked on 19-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons