| Title | On the flow field and heat transfer characteristics of a supercritical CO2-cooled microchannel heat sink under high heat flux conditions |
| Author | |
| Corresponding Author | Pourfattah, Farzad; Wang, Lianping; Yan, Wei-Mon |
| Publication Years | 2023-10-01
|
| DOI | |
| Source Title | |
| ISSN | 1040-7782
|
| EISSN | 1521-0634
|
| Abstract | Supercritical CO2 (sCO(2)) is a suitable choice as a coolant due to its favorable thermodynamic characteristics (lower density and viscosity, and higher specific heat) compared to water. In the current investigation, sCO(2) is considered a coolant in a micro heat sink under high heat fluxes 75, 100, 125, and 150 W/cm(2) and the operating pressure 8 MPa. The effects of the operating conditions, including the change in coolant mass flux (1250-3125 kg/s-m(2)), the change in the inlet temperature (305-308 K) under the mentioned heat fluxes on the heat transfer coefficient, thermal resistance, pressure drop, pumping power, and performance evaluation criteria (PEC) are investigated numerically using the finite volume method. Results indicated that thermohydraulic performance of the sCO(2)-cooled heat sink depends on the inlet coolant temperature and the applied heat flux due to the dramatic variation of the local thermophysical properties. It was found that increase in the heat flux from 75 to 150 W/cm(2) results in increase of the pumping power by 48%, diminishing the PEC from 2.35 to 0.5. Overall, sCO(2)-cooled heat sink performs better than water-cooled heat sink if the mass flow rate is high and the inlet temperature is below the pseudocritical temperature. Otherwise, using sCO(2) is not beneficial, especially under higher heat flux conditions. |
| Keywords | |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | First
; Corresponding
|
| WOS Research Area | Thermodynamics
; Mechanics
|
| WOS Subject | Thermodynamics
; Mechanics
|
| WOS Accession No | WOS:001087404600001
|
| Publisher | |
| ESI Research Field | ENGINEERING
|
| Data Source | Web of Science
|
| Citation statistics | |
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/582841 |
| Department | Department of Mechanics and Aerospace Engineering |
| Affiliation | 1.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518000, Guangdong, Peoples R China 2.Natl Taipei Univ Technol, Dept Energy & Refrigerating Air Conditioning Engn, Taipei, Taiwan 3.Univ New South Wales, Sch Mech & Mfg Engn, Kensington, NSW, Australia |
| First Author Affilication | Department of Mechanics and Aerospace Engineering |
| Corresponding Author Affilication | Department of Mechanics and Aerospace Engineering |
| First Author's First Affilication | Department of Mechanics and Aerospace Engineering |
| Recommended Citation GB/T 7714 |
Pourfattah, Farzad,Wang, Lianping,Yan, Wei-Mon,et al. On the flow field and heat transfer characteristics of a supercritical CO2-cooled microchannel heat sink under high heat flux conditions[J]. NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,2023.
|
| APA |
Pourfattah, Farzad,Wang, Lianping,Yan, Wei-Mon,&Timchenko, Victoria.(2023).On the flow field and heat transfer characteristics of a supercritical CO2-cooled microchannel heat sink under high heat flux conditions.NUMERICAL HEAT TRANSFER PART A-APPLICATIONS.
|
| MLA |
Pourfattah, Farzad,et al."On the flow field and heat transfer characteristics of a supercritical CO2-cooled microchannel heat sink under high heat flux conditions".NUMERICAL HEAT TRANSFER PART A-APPLICATIONS (2023).
|
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