Heat transfer performance of a lubricant-infused thermosyphon at various filling ratios
| Autor: | Pengfei Zhang, Daniel Orejon, Biao Shen, Fengyong Lv, Alexandros Askounis |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science 020209 energy Mechanical Engineering Thermal resistance Thermodynamics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Heat flux Boiling Heat transfer 0202 electrical engineering electronic engineering information engineering Thermosiphon 0210 nano-technology Condenser (heat transfer) Evaporator Nucleate boiling |
| Zdroj: | International Journal of Heat and Mass Transfer. 115:725-736 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2017.07.062 |
| Popis: | The effect of the filling ratio (25% ≤ FR ≤ 98%) on the heat transfer performance of a novel two-phase closed thermosyphon (TPCT) combined with a superhydrophilic (SHi) evaporator and slippery lubricant-infused porous surface (SLIPS) condenser (TPCT-SHiSL) is systematically investigated in the present study. On the evaporator side, experimental results show that a different evaporation mechanism takes place dependent on the filling ratio, which has a strong impact on the overall heat transfer performance. Film evaporation plays a dominant role at the filling ratio of 25% and at the filling ratios of 40% and 70% at low heat flux. Nonetheless, film evaporation is gradually reduced and pool boiling becomes important at the filling ratios of 40% and 70% for moderate and high heat fluxes. Finally, pool boiling plays a dominant role for the TPCT-SHiSL at the filling ratio of 98%. In the case of the condenser, the condensation heat transfer of the SLIPS is reduced with increasing filling ratio. Balancing between the thermal resistance and heat transfer capacity, the TPCT-SHiSL at the filling ratio of 40% shows the best heat transfer performance. |
| Databáze: | OpenAIRE |
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