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International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

NUMERICAL MODELING AND EXPERIMENTAL VALIDATION OF A PCM (PHASE CHANGE MATERIAL)-BASED CASCADE COOLING SYSTEM FOR ENHANCED THERMAL MANAGEMENT

Suho Kim
Korea Railroad Research Institute, 176 Cheoldo bangmulgwan-ro, Uiwang, Gyeonggi-do 16105, Republic of Korea; Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea

Bo-Kyong Kim
Korea Railroad Research Institute, 176 Cheoldo bangmulgwan-ro, Uiwang, Gyeonggi-do 16105, Republic of Korea

Jin-Yong Mok
Korea Railroad Research Institute, 176 Cheoldo bangmulgwan-ro, Uiwang, Gyeonggi-do 16105, Republic of Korea

Seok-Won Kang
Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea

DOI: 10.1615/IHTC16.ctm.024051
pages 4065-4070


SCHLÜSSELWÖRTER: Cascade Cooling, Computational Fluid Dynamics (CFD), Heat Transfer, PCM (Phase Change Material), Thermocouple

Abstrakt

This paper considers the thermal enhancement of a PCM-based cascade cooling system using experimental measurements and numerical validation. Two kinds of paraffin with different melting temperatures were used for the PCM-based cascade cooling system. The conceptual design and numerical prediction enabled assessment of the feasibility of the idea proposed in this study. In numerical simulations, the heat loss of a cartridge heater was considered to improve the accuracy of the numerical model. As a result, the difference of heat loss between simulations and experiments was approximately 5.0 % on average in the case of natural convection in air around the fin array of a heat sink. The cooling efficiency was also enhanced by approximately 27.3 % by the multi-layer type PCM-based cascade cooling system. It is expected that the PCM-based heat sink enables both instantaneous absorption of short-term spikes in the energy output from the heat sources and enhanced cooling efficiency by energy cascading among layers of PCMs.

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