Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and Experiments

Amid the growing demand for energy supply in modern cities, the enhancement of transmission capacity is receiving considerable attention. In this study, we propose a novel method of direct forced cooling in pipe-type transmission lines via an external air supply for reducing the cable temperature an...

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Main Authors: Dong-Kyu Kim, Yeon-Woog Kang, Hye-Rin Jo, Jin Geon Kim, Minwoo Lee
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/17/2/478
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author Dong-Kyu Kim
Yeon-Woog Kang
Hye-Rin Jo
Jin Geon Kim
Minwoo Lee
author_facet Dong-Kyu Kim
Yeon-Woog Kang
Hye-Rin Jo
Jin Geon Kim
Minwoo Lee
author_sort Dong-Kyu Kim
collection DOAJ
description Amid the growing demand for energy supply in modern cities, the enhancement of transmission capacity is receiving considerable attention. In this study, we propose a novel method of direct forced cooling in pipe-type transmission lines via an external air supply for reducing the cable temperature and enhancing the ampacity. We conducted numerical simulations using computationally efficient two-dimensional models and a reduced-length three-dimensional model for assessing the cooling efficiency, the distance required for temperature convergence, and the fan/pump capacity required for forced air cooling. We found a 26% increase in ampacity in the case of 5 m/s inlet air velocity into the pipe conduit. We also built and tested the experimental setup equipped with a 300 m length model transmission cable. Results of the forced air cooling experiments show good agreement with numerical simulations. To the best of our knowledge, this study demonstrates the first analysis and validation of direct cooling in pipe-type cables, presenting a promising path for efficient power management in modern metropolitan areas.
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spelling doaj.art-d275d2bb27b04913b400ee9ffca7ccad2024-01-26T16:20:44ZengMDPI AGEnergies1996-10732024-01-0117247810.3390/en17020478Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and ExperimentsDong-Kyu Kim0Yeon-Woog Kang1Hye-Rin Jo2Jin Geon Kim3Minwoo Lee4Korea Electric Power Corporation (KEPCO) Research Institute, 105 Munjiro, Yuseong, Daejeon 34056, Republic of KoreaKorea Electric Power Corporation (KEPCO) Research Institute, 105 Munjiro, Yuseong, Daejeon 34056, Republic of KoreaKorea Electric Power Corporation (KEPCO) Research Institute, 105 Munjiro, Yuseong, Daejeon 34056, Republic of KoreaDepartment of Mechanical Engineering, Hanbat National University, 125 Dongseodaero, Yuseong, Daejeon 34158, Republic of KoreaDepartment of Mechanical Engineering, Hanbat National University, 125 Dongseodaero, Yuseong, Daejeon 34158, Republic of KoreaAmid the growing demand for energy supply in modern cities, the enhancement of transmission capacity is receiving considerable attention. In this study, we propose a novel method of direct forced cooling in pipe-type transmission lines via an external air supply for reducing the cable temperature and enhancing the ampacity. We conducted numerical simulations using computationally efficient two-dimensional models and a reduced-length three-dimensional model for assessing the cooling efficiency, the distance required for temperature convergence, and the fan/pump capacity required for forced air cooling. We found a 26% increase in ampacity in the case of 5 m/s inlet air velocity into the pipe conduit. We also built and tested the experimental setup equipped with a 300 m length model transmission cable. Results of the forced air cooling experiments show good agreement with numerical simulations. To the best of our knowledge, this study demonstrates the first analysis and validation of direct cooling in pipe-type cables, presenting a promising path for efficient power management in modern metropolitan areas.https://www.mdpi.com/1996-1073/17/2/478transmission cableampacity enhancementthermo-fluid analysisforced cooling
spellingShingle Dong-Kyu Kim
Yeon-Woog Kang
Hye-Rin Jo
Jin Geon Kim
Minwoo Lee
Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and Experiments
Energies
transmission cable
ampacity enhancement
thermo-fluid analysis
forced cooling
title Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and Experiments
title_full Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and Experiments
title_fullStr Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and Experiments
title_full_unstemmed Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and Experiments
title_short Direct Air Cooling of Pipe-Type Transmission Cable for Ampacity Enhancement: Simulations and Experiments
title_sort direct air cooling of pipe type transmission cable for ampacity enhancement simulations and experiments
topic transmission cable
ampacity enhancement
thermo-fluid analysis
forced cooling
url https://www.mdpi.com/1996-1073/17/2/478
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AT hyerinjo directaircoolingofpipetypetransmissioncableforampacityenhancementsimulationsandexperiments
AT jingeonkim directaircoolingofpipetypetransmissioncableforampacityenhancementsimulationsandexperiments
AT minwoolee directaircoolingofpipetypetransmissioncableforampacityenhancementsimulationsandexperiments