TY - JOUR
T1 - Thermal management of electronics
T2 - An experimental analysis of triangular, rectangular and circular pin-fin heat sinks for various PCMs
AU - Ali, Hafiz Muhammad
AU - Ashraf, Muhammad Junaid
AU - Giovannelli, Ambra
AU - Irfan, Muhammad
AU - Irshad, Talal Bin
AU - Hamid, Hafiz Muhammad
AU - Hassan, Faisal
AU - Arshad, Adeel
N1 - Funding Information:
The corresponding author wishes to acknowledge the financial support provided by the University of Engineering and Technology, Taxila, Pakistan under the faculty research project through approval letter No. UET/ASR&TD/RG-1001 .
PY - 2018/8/1
Y1 - 2018/8/1
N2 - This study implies experimental investigation for optimization of heat transfer in electronic integrated circuits using close packed phase change materials (PCMs) filled pin-fin heat sinks. The aim of this study is to find the most efficient pin-fin configuration filled with optimum PCM to extend the operating range of electronic circuits. The experimental methodology is based upon variation of pin-fin configurations in rectangular, round and triangular cross-sections. Each configuration is allowed a pin-fin volumetric percentage of 9%. For analysis using PCM a volume fraction of 90% is maintained and six PCMs with different thermo-physical properties (varying melting temperatures, latent heats and heat capacities) are selected. These include paraffin wax, RT-54, RT-44, RT-35HC, SP-31 and n-eicosane. Moreover, the power levels mimicking heat input range between 5 W and 8 W. The resulting information is analyzed for the performance of a heat sink with and without PCM. Besides that, PCM ascendency is manipulated in terms of operational time, enhancement ratios, Stefan number and storage ratio. The outcomes suggest that triangular pin-fins are found to be the most effective pin-fin configuration for heat transfer both with and without PCM.
AB - This study implies experimental investigation for optimization of heat transfer in electronic integrated circuits using close packed phase change materials (PCMs) filled pin-fin heat sinks. The aim of this study is to find the most efficient pin-fin configuration filled with optimum PCM to extend the operating range of electronic circuits. The experimental methodology is based upon variation of pin-fin configurations in rectangular, round and triangular cross-sections. Each configuration is allowed a pin-fin volumetric percentage of 9%. For analysis using PCM a volume fraction of 90% is maintained and six PCMs with different thermo-physical properties (varying melting temperatures, latent heats and heat capacities) are selected. These include paraffin wax, RT-54, RT-44, RT-35HC, SP-31 and n-eicosane. Moreover, the power levels mimicking heat input range between 5 W and 8 W. The resulting information is analyzed for the performance of a heat sink with and without PCM. Besides that, PCM ascendency is manipulated in terms of operational time, enhancement ratios, Stefan number and storage ratio. The outcomes suggest that triangular pin-fins are found to be the most effective pin-fin configuration for heat transfer both with and without PCM.
KW - Circular
KW - Heat sinks
KW - Passive cooling
KW - Phase change materials
KW - pin-fins
KW - Rectangular
KW - Triangular
UR - http://www.scopus.com/inward/record.url?scp=85042854187&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2018.02.044
DO - 10.1016/j.ijheatmasstransfer.2018.02.044
M3 - Article
AN - SCOPUS:85042854187
SN - 0017-9310
VL - 123
SP - 272
EP - 284
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -