Convective Heat Transfer in Simulated Tube-Nested Combustor.

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  • 管巣燃焼ボイラモデルにおける対流熱伝達特性
  • カンソウ ネンショウ ボイラ モデル ニ オケル タイリュウ ネツ デンタツ ト

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Abstract

Increasing attention has been focused on the development of small-scale boilers. One approach is to adopt the concept of the tube-nested combustor developed by Ishigai et al. Experimental investigation on heat transfer has been conducted using such a simulated tube-nested combustor with emphasis on the spatial distribution of the heat transfer coefficient in the tube banks. Heat transfer coefficients at the impinging region of the jet are significantly higher than those in the uniform flow. This heat transfer coefficient decreases with the increase in the distance from the inlet, and approaches the value obtained under uniform flow. The transverse distribution depends significantly on the flow pattern of the jet in the banks.

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