A108 管内流動抵抗低減剤の評価 : 空調用熱交換器におけるDR効果と熱交換特性(オーガナイズドセッション1 : 機能性流体の熱伝達)

概要

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It is known that drag reducing additive reduce turburent friction drag and heat transfer in tube flow simultaneously. Then, the reducing chracteristics of drag and heat transfer of surfactant(Ethoquard 0/12) solution flow in the finned-tube heat exchanger (pipe di. 9.3mm) for air-conditioning were measured in the experimental room controlled temperature and humidity, before field test. The following results were obtained. (1)As cooling, it was not showed the reducing chracteristics of drag and heat transfer. Conversely, it was showed the increasing chracteristics of drag. (2)As heating, the reducing chracteristics of drag and heat transfer depended on the type of heat exchanger.
社団法人日本機械学会の論文
2001-11-03