2107 水平平板発熱体における炭酸ガスの強制対流過渡熱伝達に関する研究(G06-2 熱工学(2) 伝熱(2),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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Forced convection transient heat transfer for Carbon Dioxide at various periods of exponentially increasing heat input to a horizontal plate (ribbon) was experimentally studied. The authors measured heat flux, surface temperature, and transient heat transfer coefficients for forced convection flow of helium gas over a horizontal plate. The gas flow velocities ranged from 1 to 3 m/s, the gas temperatures ranged from 313 to 353 K, and the periods of heat generation rate, τ, ranged from 46 ms to 16 s. It was obtained that the heat transfer coefficient approaches the quasi-steady-state one for the period longer than about 1 s, and it becomes higher for the period shorter than around 1s. Empirical correlation for quasi-steady-state heat transfer was obtained based on the experimental data.
2008-08-02