放射熱分離形センサによる工作機械設置環境の熱伝達率の測定

概要

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This paper proposes a method of measuring a heat transfer coefficient without the effect of heat radiation. A special experimental device was designed, which includes a heater with three iron blocks, each having different emissivity. A heat transfer coefficient is measured at a site with very little air flow and radiant heat flux, similar to a machine-shop environment. The measuring error of a heat transfer coefficient is discussed by numerical simulation. The following results are obtained. (1) The value of a heat transfer coefficient differs by about 50% in comparison to the value obtained in another study. (2) According to the results from calculation, it seems that the coefficient is affected greatly by air flow due to temperature inequality between the sensors and ambient temperature, and also is affected by radiant heat flux.
一般社団法人日本機械学会の論文
1991-03-25