Design of a Capillary-Driven Microfluidic Cooling System Using Non-Uniform Cross Section Microchannel

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Azarkish h.

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Journal Paper

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Journal: Modares Mechanical Engineering Year:2019 | Volume:19 | Issue:6 Page(s): 1319-1325

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Information Journal Paper

Title

Design of a Capillary-Driven Microfluidic Cooling System Using Non-Uniform Cross Section Microchannel

Author(s)

Azarkish h. | Issue Writer Certificate

Keywords

Microfluidic Cooling SystemQ1

Capillary PressureQ1

Thin Film EvaporationQ1

Abstract

In the present work, a novel microchannel configuration is proposed to improve the cooling performance of a capillary-driven microfluidic system. In this approach, the possibility of meniscus formation inside the microchannel is increased for a wide range of operating temperature by controlling the capillary and viscous forces. The proposed microchannel consists of three sections. The first section is a narrow part of microchannel to control the pressure drop. The second section of microchannel is an evaporator. The meniscus is formed in this section due to balance of the capillary and viscous forces. It can move along the microchannel until the entrance of the third section of microchannel. The third section is a wide part of microchannel. The meniscus cannot move further in this section due to decreasing the Capillary Pressure. The evaporation rate from meniscus is estimated by using the Thin Film Evaporation theory. Results show that the heat flux up to 30-100 W/cm2 (at the range of 70-100⁰ C) can be dissipated by the evaporation mechanism from a hydrophilic membrane.

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APA: Copy

Azarkish, h.. (2019). Design of a Capillary-Driven Microfluidic Cooling System Using Non-Uniform Cross Section Microchannel. MODARES MECHANICAL ENGINEERING, 19(6 ), 1319-1325. SID. https://sid.ir/paper/178642/en

Vancouver: Copy

Azarkish h.. Design of a Capillary-Driven Microfluidic Cooling System Using Non-Uniform Cross Section Microchannel. MODARES MECHANICAL ENGINEERING[Internet]. 2019;19(6 ):1319-1325. Available from: https://sid.ir/paper/178642/en

IEEE: Copy

h. Azarkish, “Design of a Capillary-Driven Microfluidic Cooling System Using Non-Uniform Cross Section Microchannel,” MODARES MECHANICAL ENGINEERING, vol. 19, no. 6 , pp. 1319–1325, 2019, [Online]. Available: https://sid.ir/paper/178642/en

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