Experimental investigation of thermal characteristics for a microchannel heat sink subject to an impinging jet, using a micro-thermal sensor array

The present paper experimentally investigates the heat transfer enhancement of a microchannel heat sink subject to an impinging jet. In order to evaluate the cooling performance of the microchannel heat sink subject to an impinging jet, temperature distributions are measured by using a micro-thermal...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2003-07, Vol.105 (2), p.211-224
Main Authors: Jang, Seok Pil, Kim, Sung Jin, Paik, Kyung Wook
Format: Article
Language:English
Subjects:
Applied sciences
Devices using thermal energy
Energy
Energy. Thermal use of fuels
Exact sciences and technology
General equipment and techniques
Heat engines
heat pumps
Heat pumps
Heat transfer enhancement
Impinging jet
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Micro-thermal sensor array
Microchannel heat sink
Physics
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Thermal resistance
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Summary:The present paper experimentally investigates the heat transfer enhancement of a microchannel heat sink subject to an impinging jet. In order to evaluate the cooling performance of the microchannel heat sink subject to an impinging jet, temperature distributions are measured by using a micro-thermal sensor array manufactured through simple and convenient microfabrication processes. Based on these experimental results, the thermal resistance of the microchannel heat sink subject to an impinging jet is obtained and compared with the thermal resistance as calculated numerically. In order to show the heat transfer enhancement of the microchannel heat sink subject to an impinging jet, its thermal resistance is compared with that of a microchannel heat sink with a parallel flow. Under the condition that the pumping power is 0.072 W, the thermal resistance of the microchannel heat sink subject to an impinging air jet is experimentally obtained to be 6.1 °C/W, which is enhanced by about 48.5% compared with that of the microchannel heat sink with a parallel flow. In addition, the microchannel heat sink subject to an impinging jet is shown to be superior to a manifold microchannel heat sink as a cooling device for advanced electronic equipment with high heat generation and compact size.
ISSN:0924-4247
1873-3069
DOI:10.1016/S0924-4247(03)00103-1