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Startup and steady-state experiments are performed on a cylindrical evaporator miniature loop heat pipe (MLHP) at different heat loads from 5 to 148 W. The startup studies are conducted for various parameters of heat load and sink temperature. Thermal oscillations are observed for the input power range of 40 to 60 W at 10 °C sink temperature. The condenser outlet temperature shows large oscillations of about 2.5 °C amplitude and 80 s time period for 40 W heat load. From the steady-state studies, it is found that the MLHP removed a heat of 148 W power input while maintaining the evaporator temperature of 52 °C at 10 °C sink temperature. The device is found to be capable of startup at a low heat load of 4.8 W for the sink temperature of 10 °C. The trends observed in the experiments are similar to those reported in the literature.

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Experimental Studies on Startup and Steady-State Characterisation of Miniature Loop Heat Pipe

  • 会议论文

  • 发表日期：

    2025年

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  • Chandan Nashine,
  • Manmohan Pandey,
  • Kamlesh K. Baraya

摘要

Startup and steady-state experiments are performed on a cylindrical evaporator miniature loop heat pipe (MLHP) at different heat loads from 5 to 148 W. The startup studies are conducted for various parameters of heat load and sink temperature. Thermal oscillations are observed for the input power range of 40 to 60 W at 10 °C sink temperature. The condenser outlet temperature shows large oscillations of about 2.5 °C amplitude and 80 s time period for 40 W heat load. From the steady-state studies, it is found that the MLHP removed a heat of 148 W power input while maintaining the evaporator temperature of 52 °C at 10 °C sink temperature. The device is found to be capable of startup at a low heat load of 4.8 W for the sink temperature of 10 °C. The trends observed in the experiments are similar to those reported in the literature.