Erscheint 8 Ausgaben pro Jahr
ISSN Druckformat: 1065-5131
ISSN Online: 1563-5074
IF:
2.3
5-Year IF:
1.8
Immediacy Index:
0.2
Eigenfactor:
0.00037
JCI:
0.6
SJR:
0.433
SNIP:
0.593
CiteScore™::
4.3
H-Index:
35
Indexed in
Heat Transfer and Pressure Drop Characteristics in Dielectric Flow in Surface-Augmented Microchannels
Get access
ABSTRAKT
Microchannel heat sinks incorporating phase-change can be an effective remedy to problems encountered with extreme heat fluxes in modern day micro processor chips. An augmented surface has been created that consists of 20-micron re-entrant cavities etched in the base of each channel in the microchannel array. These cavities significantly impact the flow regime by promoting stable nucleate boiling. The phase-change thermal transport reported here is carried out on microchannel heat sinks etched in silicon and cooled by the dielectric fluid FC72. Heat transfer coefficients and pressure drops reported were measured using a versatile continuous flow loop that permitted experiments at a variety of inlet subcooling values and pressures. The results show stable thermal performance with low pressure drops that were correctly represented by the homogeneous two-phase model. The highest pressure drop measured was 17.5 kPa at a mass flux of 2138 kg/m2·s and at an inlet subcooling of 5°C.
-
Bergles Arthur E., Recent developments in enhanced heat transfer, Heat and Mass Transfer, 47, 8, 2011. Crossref
-
Jiang Peng, Yang Weimin, Yan Hua, Guan Changfeng, Performance assessment in a tube with rotor-assembled strands mixed by spiral slot rotor and low flow resistance rotor, Applied Thermal Engineering, 52, 1, 2013. Crossref
-
Narayanan Vinod, Liburdy James, Pence Deborah, Thermal Applications of Microchannel Flows, in Encyclopedia of Aerospace Engineering, 2013. Crossref
-
Zhang Ting, Liu Chun J., Guo Kai, Huang Zhe Q., Enhancement on Thermal-Hydraulic Performance of Serpentine Air Preheater, Journal of Chemical Engineering of Japan, 49, 5, 2016. Crossref
-
Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Flow Boiling Enhancement Techniques, in Two-Phase Heat Transfer Enhancement, 2020. Crossref
-
Saha Sujoy Kumar, Ranjan Hrishiraj, Emani Madhu Sruthi, Bharti Anand Kumar, Heat Transfer Fundamentals for Design of Heat Transfer Enhancement Devices, in Introduction to Enhanced Heat Transfer, 2020. Crossref
-
O'Neill Lucas E., Mudawar Issam, Review of two-phase flow instabilities in macro- and micro-channel systems, International Journal of Heat and Mass Transfer, 157, 2020. Crossref
-
Deng Daxiang, Zeng Long, Sun Wei, A review on flow boiling enhancement and fabrication of enhanced microchannels of microchannel heat sinks, International Journal of Heat and Mass Transfer, 175, 2021. Crossref
-
Yang Shuang yu, Xu Sheng, Wang Zhiming, Fei Dong, Effect of rectangular micro cavity on pool boiling heat transfer on heating surface via the lattice boltzmann method, Heat and Mass Transfer, 2022. Crossref