TY - JOUR
T1 - Thermo-hydraulic characteristics of novel MEMS heat sink
AU - Hotchandani, Vaibhav
AU - Mathew, Bobby
AU - Yesudasan, Sumith
AU - Chacko, Sibi
N1 - Funding Information:
The author of this paper would like to thank department of mechanical engineering of United Arab Emirates University and Heriot Watt University for the guidance and facilities provided by them for conducting the following research.
Publisher Copyright:
© 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2021/1
Y1 - 2021/1
N2 - This article details the analysis of the thermo-hydraulic performance of a single-phase MEMS Heat sink with pin fins integrated in micro channels. Circular pin-fins with in-line arrangement are considered in this study. The influence of operating and geometric parameters on the performance, (thermal resistance and pressure drop) are studied; the parameters considered include microchannel hydraulic diameter, microchannel spacing, substrate material, pin-fin pitch, and Reynolds number. Additionally, the performance is quantified in terms of a Figure of Merit (FOM) which is the product of normalized thermal resistance and normalized pressure drop. The thermal resistance of heat sink with pin-fin integrated in micro channels is lower than that in heat sinks without pin-fins irrespective of the Reynolds number. On the other hand, the pressure drop associated with heat sink with pin-fins integrated in microchannel is higher than that in heat sinks without pin-fins for all Reynolds number. Also, increase in hydraulic diameter leads to reduction in thermal resistance and increase in pressure drop for a specific Reynolds number. On the other hand, reduction in microchannel spacing leads to reduction in thermal resistance for a specific Reynolds number; the pressure drop is independent of the microchannel spacing. With regards to the influence of substrate material, the thermal resistance decreased with increase in thermal conductivity; the pressure drop is not influenced by changes in substrate material.
AB - This article details the analysis of the thermo-hydraulic performance of a single-phase MEMS Heat sink with pin fins integrated in micro channels. Circular pin-fins with in-line arrangement are considered in this study. The influence of operating and geometric parameters on the performance, (thermal resistance and pressure drop) are studied; the parameters considered include microchannel hydraulic diameter, microchannel spacing, substrate material, pin-fin pitch, and Reynolds number. Additionally, the performance is quantified in terms of a Figure of Merit (FOM) which is the product of normalized thermal resistance and normalized pressure drop. The thermal resistance of heat sink with pin-fin integrated in micro channels is lower than that in heat sinks without pin-fins irrespective of the Reynolds number. On the other hand, the pressure drop associated with heat sink with pin-fins integrated in microchannel is higher than that in heat sinks without pin-fins for all Reynolds number. Also, increase in hydraulic diameter leads to reduction in thermal resistance and increase in pressure drop for a specific Reynolds number. On the other hand, reduction in microchannel spacing leads to reduction in thermal resistance for a specific Reynolds number; the pressure drop is independent of the microchannel spacing. With regards to the influence of substrate material, the thermal resistance decreased with increase in thermal conductivity; the pressure drop is not influenced by changes in substrate material.
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U2 - 10.1007/s00542-020-04933-3
DO - 10.1007/s00542-020-04933-3
M3 - Article
AN - SCOPUS:85087574435
SN - 0946-7076
VL - 27
SP - 145
EP - 157
JO - Microsystem Technologies
JF - Microsystem Technologies
IS - 1
ER -