Energy and Exergy Analyses of Nitrogen Liquefaction Process

Karabuga, Arif; Selbaş, Reşat; Kabul, Ahmet

doi:10.1016/b978-0-12-813734-5.00036-6

Cited by 2 publications

(1 citation statement)

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“…As one of interesting liquefied gases is liquid nitrogen close 77 K which considerably used in low-temperature physics, medicine, superconducting [5]. Further, it is employed in applications ranging from cryogenic grinding of plastics to frozen foods [6].…”

Section: Introductionmentioning

confidence: 99%

Calculated properties of GdNi intermetallic compound for the nitrogen liquefaction process: insight into ab-initio computations and Monte Carlo simulation

Aziz,

Essajai,

Benyoussef

et al. 2023

Phys. Scr.

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Theoretical study on the ground state proprieties of GdNi intermetallic compound and its magnetic observable curves, as well as its magneto-caloric effect (MCE) were performed. It was established that the magnetic moment of Gd atom is found to be 7.11 μB and the exchange coupling parameters are found to be J1=3.7 meV and J2= 2.06 meV. Moreover, in good agreement with a recent experimental work, the magnetization, magnetization derivative and susceptibility curves confirmed that the studied sample undergoes a ferromagnetic ordering at Tc =70K. Further, it was found that MCE in regard to the peak value of magnetic entropy ( -∆Smag(T)) around Tc, can be enhanced with high magnetic fields. Besides,- ∆SmagMax (the maximum value of -∆Smag(T)) and RCP (Relative Cooling Power) attain maximum values of 17,13 JKg−1K−1and 549 Jkg-1close to Tc, respectively for external magnetic field of 5T, being in good agreement with the experimental ones. The present findings enable us to say that GdNi-based magnetic refrigeration can be considered as a promising technology for the nitrogen liquefaction process.

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Section: Introductionmentioning

confidence: 99%