Studies on the Heat Transfer of Fluids at a Supercritical Pressure : 1st Report, A Proposition of Reference Values of Thermal Properties and Experiments with Supercritical Carbon-Dioxide

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概要

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• A reference value of the thermal properties for a fluid at a supercritical pressure is proposed as, F=1/(t_ω-t_∞)∫^<t_ω>_<t_∞>F (t) dt where F : reference thermal property F (t) : thermal property as a function of temperature t_ω : wall temperature t_∞ : bulk temperature. The heat transfer coefficient of a supercritical fluid can be determined by applying the reference value to an ordinary heat transfer formula for constant thermal properties. Experiments of heat transfer for carbon-dioxide at a supercritical pressure were made for three types of heat transfer, viz. (1) natural convection from a horizontal pipe, (2) natural convection from a vertical plate, and (3) forced convection from a circular pipe. The experimental result agrees with the proposed calculation.

• 一般社団法人日本機械学会の論文

著者

• Kato Hiroharu

  Faculty Of Engineering University Of Tokyo

• Kato Hiroharu

  Faculty Of Engineering The University Of Tokyo

• NISHIWAKI Niichi

  Faculty of Engineering, University of Tokyo

• HIRATA Masaru

  Faculty of Engineering, University of Tokyo

• Nishiwaki Niichi

  Faculty Of Engineering Seikei University.

• Hirata Masaru

  Faculty Of Engineering University Of Tokyo

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