A compact, high-performance continuous magnetic refrigerator for space missions

Shirron, Peter; Canavan, Edgar R.; DiPirro, Michael; Jackson, M.; King, Todd; Panek, John; Tuttle, James

doi:10.1016/s0011-2275(01)00164-3

Cited by 33 publications

(15 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Imposing and removing magnetic fields creates temperature changes in the magnetic material that acts as a solid refrigerant in a heat pump cycle. Magnetic refrigeration has been used in gas liquefaction systems [3], cryogenic applications [4], and is a candidate for room temperature commercial and industrial refrigeration and air conditioning processes [5]. Magnetic materials research for room temperature magnetic refrigeration has been conducted [6,7] and application projects of magnetic refrigeration have been demonstrated [8][9][10][11] at various institutions.…”

Section: Introductionmentioning

confidence: 99%

Analysis of room temperature magnetic regenerative refrigeration

Shir

Mavriplis

Bennett

et al. 2005

International Journal of Refrigeration

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Analysis of room temperature magnetic regenerative refrigeration

Shir

Mavriplis

Bennett

et al. 2005

International Journal of Refrigeration

View full text Add to dashboard Cite

“…The first developments of continuous ADR systems were made by the NASA/Goddard group [3]. The analysis of the number of heat switches and the overall efficiency shows that, in most cases, the series configuration is more efficient than the more intuitive parallel operation.…”

Section: Thermal Designmentioning

confidence: 99%

Development of an ADR Refrigerator with Two Continuous Stages

et al. 2016

View full text Add to dashboard Cite

We present a magnetic cooling chain designed to have a continuous heat sink below 50 mK. It has been focused on providing a cryogen-free and autonomous operation for the users. The challenge is to provide two levels of continuous cooling in order to control the heat balance on the coldest stage. Designed for scientific research and high sensitivity cryogenic detectors applications, the prototype has been validated with a kinetic inductance detectors array. A completely autonomous operation of the cryogenics system from 300 K down to 100 mK has been validated.

show abstract

“…additional refrigerator cools the entire telescope and instrument volume (which has its own radiation shield) to 4 K. With the sunshade and cryocoolers in operation, a set of Continuous Adiabatic Demagnetization Refrigerators (CADRs; (Shirron et al, 2002)) is sufficient to cool the instrument and telescope to 4 K and the detectors to the even lower temperatures they require.…”

Section: Thermal D E S I G Nmentioning

confidence: 99%

Mission Concept for the Single Aperture Far-Infrared (SAFIR) Observatory

Benford

Amato

Mather

et al. 2004

Astrophys Space Sci

View full text Add to dashboard Cite

Abstract. The Single Aperture Far-InfraRed (SAFIR) Observatory's science goals are driven by the fact that the earliest stages of almost all phenomena in the universe are shrouded in absorption by and emission from cool dust and gas that emits strongly in the far-infrared (40 µm-200 µm) and submillimeter (200 µm-1 mm). In the very early universe, the warm gas of newly collapsing, unenriched galaxies will be revealed by molecular hydrogen emission lines at these long wavelengths. High redshift quasars are found to have substantial reservoirs of cool gas and dust, indicative of substantial metal enrichment early in the history of the universe. As a result, even early stages of galaxy formation will show powerful far-infrared emission. The combination of strong dust emission and large redshift (1 < z < 7) of these galaxies means that they can only be studied in the far-infrared and submillimeter. For nearby galaxies, many of the most active galaxies in the universe appear to be those whose gaseous disks are interacting in violent collisions. The details of these galaxies, including the effect of the central black holes that probably exist in most of them, are obscured to shorter wavelength optical and ultraviolet observatories by the large amounts of dust in their interstellar media. Within our own galaxy, the earliest stages of star formation, when gas and dust clouds are collapsing and the beginnings of a central star are taking shape, can only be observed in the far-infrared and submillimeter. The cold dust that ultimately forms the planetary systems, as well as the cool "debris" dust clouds that indicate the likelihood of planetary sized bodies around more developed stars, can only be observed at wavelengths longward of 20 µm.Over the past several years, there has been an increasing recognition of the critical importance of the far-infrared to submillimeter spectral region to addressing fundamental astrophysical problems, ranging from cosmological questions to understanding how our own Solar System came into being. The development of large, far-infrared telescopes in space has become more feasible with the combination of developments for the James Webb Space Telescope (JWST) of enabling breakthroughs in detector technology.We have developed a preliminary but comprehensive mission concept for SAFIR, as a 10 m-class far-infrared and submillimeter observatory that would begin development later in this decade to meet the needs outlined above. Its operating temperature (≤4 K) and instrument complement would be optimized to reach the natural sky confusion limit in the far-infrared with diffraction-limited performance down to at least the atmospheric cutoff, λ 40 µm . This would provide a point source sensitivity improvement of several orders of magnitude over that of the Spitzer Space Telescope (previously SIRTF) or the Herschel Space Observatory. Additionally, it would have an angular resolution 12 times finer than that of Spitzer and three times finer than Herschel. This sensitivity and angular resolution are nec...

show abstract

A compact, high-performance continuous magnetic refrigerator for space missions

Cited by 33 publications

References 7 publications

Analysis of room temperature magnetic regenerative refrigeration

Analysis of room temperature magnetic regenerative refrigeration

Development of an ADR Refrigerator with Two Continuous Stages

Mission Concept for the Single Aperture Far-Infrared (SAFIR) Observatory

Contact Info

Product

Resources

About