Abstract
Within the electronics industry, high degree of integration and enhanced performance has led to high heat dissipation electronic devices. This has identified the future development of very high heat flux components. In this paper, a novel and high efficient diffusion welded heat fin-plate radiator (HFPR) was proposed and designed. Various parameters affect the thermal performance of HFPR. The effect of three parameters: the working fluid filling ratios (8% < FR < 70%), the vacuum degrees (0.001 Pa < VD < 0.1 Pa), and the air flow velocities (0.5 m/s < u < 6 m/s) were investigated experimentally. Using distilled water and ethanol as working fluids, a series of tests were carried out to find the influence of the above parameters on steady-state heat transfer characteristics of HFPR. The experimental results indicated that the filling ratio and vacuum degree had a significant influence on thermal performance of HFPR. Also compared with cooling performance using distilled water and ethanol, the HFPR cooling component using distilled water had a stronger heat dissipation capacity for the same filling ratio. The results also can provide a basis for optimal design of HFPR structure.
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Abbreviations
- D e :
-
Hydraulic diameter (m)
- FR:
-
Filling ratio
- F s :
-
Front surface area (m2)
- dP :
-
Pressure loss (Pa)
- Q :
-
Heat load (W)
- R :
-
Resistance (Ω)
- T :
-
Temperature (K)
- U :
-
Voltage (V)
- VD:
-
Vacuum degree
- c p :
-
Specific heat (J/kg K)
- h f :
-
Fin height (m)
- m :
-
Mass flow rate (kg/s)
- u :
-
Air flow velocity (m/s)
- s f :
-
Fin pitch (m)
- Δt :
-
Temperature difference (K)
- δ :
-
Distance between temperature measuring points and front surface of heater (m)
- δ f :
-
Fin thickness (m)
- λ :
-
Thermal conductivity (W/m K)
- as:
-
Air side
- fs:
-
Front surface
- in:
-
Air inlet
- m:
-
Measure
- out:
-
Air outlet
- s:
-
Source
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Acknowledgments
The authors acknowledge the financial support provided by funds of the program for new century excellent talents in University (Grant no. NCET-07-0434) and the Doctorate Foundation of Nanjing University of Technology (Grant no. BSCX200714).
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Peng, H., Ling, X. Experimental investigation on flow and heat transfer performance of a novel heat fin-plate radiator for electronic cooling. Heat Mass Transfer 45, 1575–1581 (2009). https://doi.org/10.1007/s00231-009-0532-7
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DOI: https://doi.org/10.1007/s00231-009-0532-7