Comparison between the thermophysical properties of compressed LOX and supercritical oxygen to be used as cryogen in HTS power applications

Kumar, Abhinav; Usurumarti, Preeti Rao; Dondapati, Raja Sekhar

doi:10.1049/cp.2016.1505

Cited by 1 publication

(3 citation statements)

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“…temperature and pressure. Different statistical factors like AARE (%) and SAR have been estimated and lower values (Table IV) show correctness of the fit [25]. R 2 Value is found to approximate equal to 1.…”

Section: B Development Of Correlationsmentioning

confidence: 86%

“…These heating loads are required to compensate by an efficient cooling system which may be conduction or convection cooled. In the literature, various studies have been performed where different strategies have been proposed in order to acquire efficient cooling [24] [25]. Numerical models have been also intended in order to simulate the LN2 flow behavior [26]- [29].…”

Section: Figure 1 Schematic Of Starc Abl Hybrid Electric Aircraftmentioning

confidence: 99%

“…Numerical models have been also intended in order to simulate the LN2 flow behavior [26]- [29]. Few researchers have proposed supercritical cryogens as a novel cryogen due to its astonishing properties in order to achieve efficient cooling [25].…”

Section: Figure 1 Schematic Of Starc Abl Hybrid Electric Aircraftmentioning

confidence: 99%

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Feasibility Analysis on Cryogenic Properties of Supercritical Nitrogen to be used in the Cooling of Hg-Based High Temperature Superconductors for Electric Aircraft Propulsion

Kumar¹,

Jeyan²

2019

IJEAT

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Electrified Aircraft Propulsion (EAP) and Advanced Hybrid Electric Aircrafts (AHEA) like NASA NX-3, SUGAR, NASA X-57 and STARC ABL are going to be the future of avionics as they have potential to improve fuel economy, emissions and noise levels. The agencies have suggested using superconducting cables for the electric transmission to reduce heat losses. The limit of critical current has reached 134 K where Hg- based ceramic materials are available that can superconduct at this temperature range. In order to retain the superconductivity, the cables have to be cooled below its critical temperature. Liquid nitrogen (LN2) boils of at 77 K which further leads to multiphase heat transfer challenges. An attempt has been made in the present work to overcome such challenges and a novel concept of using Supercritical Nitrogen (SCN), having critical temperature 126.19K and pressure as 3.3958MPa (consist single phase), as a cryogen for the cooling of Hg-Based Superconductors, has been introduced. Drastic variations have been found for thermophysical properties of SCN near the critical point. It has been concluded that few temperature and pressure ranges are suitable if one wants to incorporate SCN as cryogen for Hg-based superconductors.

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Section: B Development Of Correlationsmentioning

confidence: 86%