Numerical Analysis on Cooling Performances for Connectors Using Immersion Cooling in Ultra-Fast Chargers for Electric Vehicles DOI Open Access

Seong-Guk Hwang,

Moo‐Yeon Lee,

B.D. Ko

et al.

Symmetry, Journal Year: 2025, Volume and Issue: 17(4), P. 624 - 624

Published: April 20, 2025

The increasing demand for ultra-fast charging in electric vehicles (EVs) necessitates advancements thermal management strategies to mitigate Joule heating, which arises due electrical resistance connectors and cable cores. This study presents a numerical analysis of immersion cooling performance chargers under realistic conditions. simulated results are validated by experiments with maximum deviation 5.5% at 600 A 700 currents. novelty this work lies the consideration length 5 m, evaluation temperature characteristics charger connector, geometric symmetry coolant configuration ensure uniform heat distribution. Key operating conditions were systematically analyzed, including applied currents, ambient temperatures, flow rates, core cross-sectional areas, different types coolants. Results indicate that current from 400 800 raised connector 60.73 °C 97.33 °C. As increased 20 50 °C, rose significantly 42.71 74.99 while 65.26 100.61 Increasing area mm2 30 reduced 77.20 Meanwhile, rate 2 LPM had negligible effect on temperature. Among three tested coolants, Novec 7500 exhibited highest efficiency, achieving lowest contact (74.76 °C) criteria (PEC) value 3.8. provides valuable guidelines enhancing symmetry-driven systems demonstrates potential improve safety, operational reliability next-generation high-power EV chargers.

Language: Английский

Experimental Study of a Novel Prototype of Dual-Cycle Two-Phase Cooling System for a Data Cabinet DOI Creative Commons
Hao Cheng,

Tongzhi Yang,

Yifan Zhao

et al.

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(5), P. 2386 - 2386

Published: Feb. 23, 2025

As Information Technology continues to rapidly evolve, the scale and energy consumption of data centers have seen a significant surge. Traditional air-cooling systems in are notably intensive. This study proposes an innovative dual-cycle two-phase cooling system (DTCS) for retrofitting existing server cabinets. The integrates two synergistic subsystems pump-driven chip-level (PCTCS) backplane-level (PBTCS). PCTCS provides year-round natural high-power chips, experimental results indicate that even under extreme outdoor conditions up 42 °C, can maintain chip temperature at 76 °C. At same time, PBTCS effectively cools all components cabinet except chips. By efficiently controlling through PCTCS, novel DTCS ensures stable operation room temperatures 33 thereby significantly reducing system. average annual pPUE is 1.078 test site Xiangyang, Hubei province China. could perform well across various Chinese cities severe hot moist conditions, with consistently below 1.1.

Language: Английский

Citations

0
A comprehensive review of single-phase immersion cooling in data centres DOI
Shuai Zheng,

Chuansheng Su,

Xiaoping Yang

et al.

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 126385 - 126385

Published: March 1, 2025

Language: Английский

Citations

0
Numerical Analysis on Cooling Performances for Connectors Using Immersion Cooling in Ultra-Fast Chargers for Electric Vehicles DOI Open Access

Seong-Guk Hwang,

Moo‐Yeon Lee,

B.D. Ko

et al.

Symmetry, Journal Year: 2025, Volume and Issue: 17(4), P. 624 - 624

Published: April 20, 2025

The increasing demand for ultra-fast charging in electric vehicles (EVs) necessitates advancements thermal management strategies to mitigate Joule heating, which arises due electrical resistance connectors and cable cores. This study presents a numerical analysis of immersion cooling performance chargers under realistic conditions. simulated results are validated by experiments with maximum deviation 5.5% at 600 A 700 currents. novelty this work lies the consideration length 5 m, evaluation temperature characteristics charger connector, geometric symmetry coolant configuration ensure uniform heat distribution. Key operating conditions were systematically analyzed, including applied currents, ambient temperatures, flow rates, core cross-sectional areas, different types coolants. Results indicate that current from 400 800 raised connector 60.73 °C 97.33 °C. As increased 20 50 °C, rose significantly 42.71 74.99 while 65.26 100.61 Increasing area mm2 30 reduced 77.20 Meanwhile, rate 2 LPM had negligible effect on temperature. Among three tested coolants, Novec 7500 exhibited highest efficiency, achieving lowest contact (74.76 °C) criteria (PEC) value 3.8. provides valuable guidelines enhancing symmetry-driven systems demonstrates potential improve safety, operational reliability next-generation high-power EV chargers.

Language: Английский

Citations

0