Influence of flow rate and heat flux on the temperature distribution in long length counter flow cooled cold dielectric HTS cables

Kalsia, Mohit; Dondapati, Raja Sekhar

doi:10.1016/j.physc.2019.1353549

Cited by 4 publications

(1 citation statement)

References 19 publications

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“…5. The same profile has been observed elsewhere in literature as well [41]. The temperature of the coolant at the outflow of the cable is 70.07 K, marginally above the prescribed value of 70 K; the maximum temperature is 70.8 K which is a little under the 70.85 K from the FD model in [36].…”

Section: A Steady Statesupporting

confidence: 84%

Efficient Multiphysics Finite Element Simulation of a Transient Fault in a Bi-2223 HTS Power Cable

Petrov

Golosnoy

Pilgrim

2021

IEEE Trans. Appl. Supercond.

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In this work, the problem of a high temperature superconducting cable (HTSC) response to and recovery from a transient short circuit fault is discussed and a finite element solution to the problem is presented. The full model consists of three subroutines, connecting together 1) electromagnetic phenomena in HTSCs and associated Joule heat release, 2) heat transfer from the HTSC to the cooling circuit, 3) convective heat transport in liquid nitrogen. These subroutines are connected via geometric and variable couplings. The background of the real cable to be modelled is laid out together with its key properties. The most important parameter and variable calculations are explained in detail. In order to facilitate a computational speedup through manipulation of the active physics during selected intervals of time, the simulation is split in three distinct stages -steady-state, transient fault, and recovery. Moreover, it was shown how the entire simulation may be performed over a moderately reasonable amount of time using low computational resources when certain approximations are exploited -namely, using the electromagnetic model only on a limited number of cross-sections along the cable. This work shows that fairly accurate results can be achieved on an office PC using a commercial FEM software even without access to computing clusters, and that the same model can be used to examine both normal and transient operation.

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Section: A Steady Statesupporting

confidence: 84%

Efficient Multiphysics Finite Element Simulation of a Transient Fault in a Bi-2223 HTS Power Cable

Petrov

Golosnoy

Pilgrim

2021

IEEE Trans. Appl. Supercond.

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Hydrogen-electricity hybrid energy pipelines for railway transportation: Design and economic evaluation

Fu,

Chen,

Chen

et al. 2024

International Journal of Hydrogen Energy

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Numerical Studies on Two-Phase Flow of Liquid Nitrogen to Cool HTS Power Cables

Souza

Hassan

Anand

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Liquid nitrogen is the foremost coolant when it comes to cooling HTS power devices due to its abundance and since it is more economical than other cryogens. Sub-cooled LN2 is preferred over saturated LN2 as it ofers substantial advantages in terms of performance. However, in the cases where it is not possible to cool HTS power cables using sub-cooled LN2, saturated LN2 is the only option. Additionally, even when sub-cooled LN2 is used for long length cables, the heat-in-leaks along with other core losses result in rise in temperature and an unavoidable two-phase fow afects the cooling characteristics of the cryogen. This paper deals with the modeling and numerical analysis of a two-phase fow through an HTS power cable cryostat to understand the temperature profle, the pressure drop per unit length, and required pumping power for circulation of cryogen.

show abstract

Influence of flow rate and heat flux on the temperature distribution in long length counter flow cooled cold dielectric HTS cables

Cited by 4 publications

References 19 publications

Efficient Multiphysics Finite Element Simulation of a Transient Fault in a Bi-2223 HTS Power Cable

Efficient Multiphysics Finite Element Simulation of a Transient Fault in a Bi-2223 HTS Power Cable

Hydrogen-electricity hybrid energy pipelines for railway transportation: Design and economic evaluation

Numerical Studies on Two-Phase Flow of Liquid Nitrogen to Cool HTS Power Cables

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