Thermal performance and capillary limit of a ceramic wick applied to LHP and CPL
作者： Paulo H.D. Santos , Edson Bazzo , Amir A.M. Oliveira
DOI: 10.1016/J.APPLTHERMALENG.2012.02.042
关键词: Thermal resistance 、 Capillary action 、 Ceramic 、 Composite material 、 Loop heat pipe 、 Heat transfer 、 Porosity 、 Evaporator 、 Materials science 、 Forensic engineering 、 Working fluid
摘要: Abstract The performance of a ceramic wick working as capillary evaporator Loop Heat Pipe (LHP) and Capillary Pumped (CPL) is analyzed. LHP the CPL have with 10 mm inner diameter 25 mm length. compensation chamber has same length 50 mm. was sintered from alumina mullite powders, achieving 50% porosity, 1–3 μm pore size distribution permeability 35 × 10 −15 m 2 , then machined to properly fit evaporators. tests were carried out using deionized water fluid for power inputs up 30 W. thermal performance, limit area-specific resistance these systems analyzed support basic heat transfer flow lumped models. lowest values 31.7 °C/W/cm 25.0 °C/W/cm reached when dissipating 3.18 W/cm while highest 52.8 °C/W/cm 38.8 °C/W/cm 0.53 W/cm 1.06 W/cm respectively. analysis shows that operate well at their equivalent similar devices operating acetone ammonia reported in literature.
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