Cooling performance and space efficiency improvement based on heat sink arrangement for power conversion electronics

Youngchan Yoon, Dong Rip Kim, Kwan Soo Lee

Research output: Contribution to journalArticle

Abstract

A heat sink system was miniaturized, and its cooling performance was improved by overlapping the heat sinks. To simulate an axial fan condition (typically used in air-cooled forced convection), a fan characteristic curve was applied to consider the relationship between the airflow rate and pressure drop. On investigating the cooling performance of the overlapped heat sinks, it was confirmed that the heat transfer coefficient was improved owing to the increase in the velocity inside the channel, even though the flow rate was decreased. In addition, the fan curves were generalized to be applied in various fan environments, and correlations were proposed to predict the pressure drop and cooling performance of the overlapped heat sinks. The correlations reflect the heat sink geometry and fan characteristics of the system. The cooling performance was improved by a maximum of 35%, and the volume occupied by the system decreased when the fins overlapped. This suggests the proposed method can maximize the space efficiency and improve the cooling performance in a given environment without changing the geometry of the heat sink.

Original languageEnglish
Article number114458
JournalApplied Thermal Engineering
Volume164
DOIs
StatePublished - 2020 Jan 5

Fingerprint

Heat sinks
Electronic equipment
Fans
Cooling
Pressure drop
Geometry
Forced convection
Heat transfer coefficients
Flow rate
Air

Keywords

  • Forced convection
  • Plate fin heat sink
  • Power conversion electronics cooling
  • Space efficiency

Cite this

@article{e0ab3cfe646e492ca7763895f2fdf3da,
title = "Cooling performance and space efficiency improvement based on heat sink arrangement for power conversion electronics",
abstract = "A heat sink system was miniaturized, and its cooling performance was improved by overlapping the heat sinks. To simulate an axial fan condition (typically used in air-cooled forced convection), a fan characteristic curve was applied to consider the relationship between the airflow rate and pressure drop. On investigating the cooling performance of the overlapped heat sinks, it was confirmed that the heat transfer coefficient was improved owing to the increase in the velocity inside the channel, even though the flow rate was decreased. In addition, the fan curves were generalized to be applied in various fan environments, and correlations were proposed to predict the pressure drop and cooling performance of the overlapped heat sinks. The correlations reflect the heat sink geometry and fan characteristics of the system. The cooling performance was improved by a maximum of 35{\%}, and the volume occupied by the system decreased when the fins overlapped. This suggests the proposed method can maximize the space efficiency and improve the cooling performance in a given environment without changing the geometry of the heat sink.",
keywords = "Forced convection, Plate fin heat sink, Power conversion electronics cooling, Space efficiency",
author = "Youngchan Yoon and Kim, {Dong Rip} and Lee, {Kwan Soo}",
year = "2020",
month = "1",
day = "5",
doi = "10.1016/j.applthermaleng.2019.114458",
language = "English",
volume = "164",
journal = "Applied Thermal Engineering",
issn = "1359-4311",

}

Cooling performance and space efficiency improvement based on heat sink arrangement for power conversion electronics. / Yoon, Youngchan; Kim, Dong Rip; Lee, Kwan Soo.

In: Applied Thermal Engineering, Vol. 164, 114458, 05.01.2020.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cooling performance and space efficiency improvement based on heat sink arrangement for power conversion electronics

AU - Yoon, Youngchan

AU - Kim, Dong Rip

AU - Lee, Kwan Soo

PY - 2020/1/5

Y1 - 2020/1/5

N2 - A heat sink system was miniaturized, and its cooling performance was improved by overlapping the heat sinks. To simulate an axial fan condition (typically used in air-cooled forced convection), a fan characteristic curve was applied to consider the relationship between the airflow rate and pressure drop. On investigating the cooling performance of the overlapped heat sinks, it was confirmed that the heat transfer coefficient was improved owing to the increase in the velocity inside the channel, even though the flow rate was decreased. In addition, the fan curves were generalized to be applied in various fan environments, and correlations were proposed to predict the pressure drop and cooling performance of the overlapped heat sinks. The correlations reflect the heat sink geometry and fan characteristics of the system. The cooling performance was improved by a maximum of 35%, and the volume occupied by the system decreased when the fins overlapped. This suggests the proposed method can maximize the space efficiency and improve the cooling performance in a given environment without changing the geometry of the heat sink.

AB - A heat sink system was miniaturized, and its cooling performance was improved by overlapping the heat sinks. To simulate an axial fan condition (typically used in air-cooled forced convection), a fan characteristic curve was applied to consider the relationship between the airflow rate and pressure drop. On investigating the cooling performance of the overlapped heat sinks, it was confirmed that the heat transfer coefficient was improved owing to the increase in the velocity inside the channel, even though the flow rate was decreased. In addition, the fan curves were generalized to be applied in various fan environments, and correlations were proposed to predict the pressure drop and cooling performance of the overlapped heat sinks. The correlations reflect the heat sink geometry and fan characteristics of the system. The cooling performance was improved by a maximum of 35%, and the volume occupied by the system decreased when the fins overlapped. This suggests the proposed method can maximize the space efficiency and improve the cooling performance in a given environment without changing the geometry of the heat sink.

KW - Forced convection

KW - Plate fin heat sink

KW - Power conversion electronics cooling

KW - Space efficiency

UR - http://www.scopus.com/inward/record.url?scp=85072862568&partnerID=8YFLogxK

U2 - 10.1016/j.applthermaleng.2019.114458

DO - 10.1016/j.applthermaleng.2019.114458

M3 - Article

AN - SCOPUS:85072862568

VL - 164

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

SN - 1359-4311

M1 - 114458

ER -