F221 湿度操作による空気中の浮遊微粒子の除去(次世代冷凍空調技術に関わる伝熱過程II)

概要

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Removal effect on SPM (suspended participate matters) by the humidity swing operation, where air is humidified and dehumidified continuously, was experimentally studied. It was observed that the number of SPM of 0.3 μm or more increased markedly by the humidity swing operation even on air filtered by a HEPA filter. It can be considered that nanometer size SPM exists in the filtered air and it grew up to liquid drop of more than 0.3 μm by nuclear condensation. Also, it was estimated that removal of the grown liquid drop with an impactor requires the particle size over one micrometer. The current set up is inadequate for the requirement. The improvement in non-uniformity of temperature and humidity distribution in the set up and heat and mass transfer enhancement are necessary.
一般社団法人日本機械学会の論文
2009-11-06