Heat transfer augmentation in microchannel heat sink based on isogeometric topology optimization framework

2021 ◽  
Author(s):  
Xiaohu Li ◽  
Lukuan Zhang ◽  
Baotong Li
Keyword(s):  
Heat Transfer ◽  
Topology Optimization ◽  
Heat Sink ◽  
Microchannel Heat Sink ◽  
Heat Transfer Augmentation ◽  
Optimization Framework

An overview of passive techniques for heat transfer augmentation in microchannel heat sink

2017 ◽  
Vol 88 ◽  
pp. 74-83 ◽  
Author(s):  
Nor Azwadi Che Sidik ◽  
Muhammad Noor Afiq Witri Muhamad ◽  
Wan Mohd Arif Aziz Japar ◽  
Zainudin A. Rasid
Keyword(s):  
Heat Transfer ◽  
Heat Sink ◽  
Microchannel Heat Sink ◽  
Heat Transfer Augmentation ◽  
Passive Techniques

scholarly journals A review of passive methods in microchannel heat sink application through advanced geometric structure and nanofluids: Current advancements and challenges

2020 ◽  
Vol 9 (1) ◽  
pp. 1192-1216
Author(s):  
Wan Mohd. Arif Aziz Japar ◽  
Nor Azwadi Che Sidik ◽  
Rahman Saidur ◽  
Yutaka Asako ◽  
Siti Nurul Akmal Yusof
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Integrated Circuit ◽  
Heat Sink ◽  
Heat Transfer Performance ◽  
Electronic Devices ◽  
Microchannel Heat Sink ◽  
Transfer Performance ◽  
Heat Transfer Augmentation ◽  
Power Integrated Circuit

AbstractMicrochannel heat sink (MCHS) is an advanced cooling technique to fulfil the cooling demand for electronic devices installed with high-power integrated circuit packages (microchips). Various microchannel designs have been innovated to improve the heat transfer performance in an MCHS. Specifically, the utilisation of nanotechnology in the form of nanofluid in an MCHS attracted the attention of researchers because of considerable enhancement of thermal conductivity in nanofluid even at a low nanoparticle concentration. However, a high-pressure drop was the main limitation as it controls the MCHS performance resulted from heat transfer augmentation. Therefore, this study aimed to critically summarise the challenges and limitations of both single and hybrid passive methods of MCHS. Furthermore, the performance of nanofluid as a coolant in the MCHS as affected by the type and concentration of nanoparticle and the type of base fluid was reviewed systematically. The review indicated that the hybrid MCHS provides a better cooling performance than MCHS with the single passive method as the former results in a higher heat transfer rate with minimal pressure drop penalty. Besides that, further heat transfer performance can be enhanced by dispersing aluminium dioxide (Al2O3) nanoparticles with a concentration of less than 2.0% (v/v) in the water-based coolant.

scholarly journals Study on flow and heat transfer of liquid metal in a new top-slotted microchannel heat sink

2021 ◽  
Vol 621 ◽  
pp. 012054
Author(s):  
Zhiwei Chen ◽  
Peng Qian ◽  
Zizhen Huang ◽  
Chengyuan Luo ◽  
Minghou Liu
Keyword(s):  
Heat Transfer ◽  
Liquid Metal ◽  
Heat Sink ◽  
Microchannel Heat Sink ◽  
Flow And Heat Transfer

scholarly journals Effect of liquid cooling on PCR performance with the parametric study of cross-section shapes of microchannels

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yousef Alihosseini ◽  
Mohammad Reza Azaddel ◽  
Sahel Moslemi ◽  
Mehdi Mohammadi ◽  
Ali Pormohammad ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Heat Sink ◽  
Evaluation Criteria ◽  
Circular Cross Section ◽  
Microchannel Heat Sink ◽  
Liquid Cooling ◽  
Maximum Heat ◽  
Maximum Heat Transfer

AbstractIn recent years, PCR-based methods as a rapid and high accurate technique in the industry and medical fields have been expanded rapidly. Where we are faced with the COVID-19 pandemic, the necessity of a rapid diagnosis has felt more than ever. In the current interdisciplinary study, we have proposed, developed, and characterized a state-of-the-art liquid cooling design to accelerate the PCR procedure. A numerical simulation approach is utilized to evaluate 15 different cross-sections of the microchannel heat sink and select the best shape to achieve this goal. Also, crucial heat sink parameters are characterized, e.g., heat transfer coefficient, pressure drop, performance evaluation criteria, and fluid flow. The achieved result showed that the circular cross-section is the most efficient shape for the microchannel heat sink, which has a maximum heat transfer enhancement of 25% compared to the square shape at the Reynolds number of 1150. In the next phase of the study, the circular cross-section microchannel is located below the PCR device to evaluate the cooling rate of the PCR. Also, the results demonstrate that it takes 16.5 s to cool saliva samples in the PCR well, which saves up to 157.5 s for the whole amplification procedure compared to the conventional air fans. Another advantage of using the microchannel heat sink is that it takes up a little space compared to other common cooling methods.

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