The purpose of this study is to analyze the distribution characteristics of mist spray particle size by devising a rotary mist spraying device to develop the evaporative salt water desalination system. The rotary mist spraying device was consisted of a BLDC sirocco fan, a spinning fan, a fan fixed shaft and a salt water supply device etc. In this study we analyzed the characteristics of spray particle size and distribution according to the variation of sirocco fan surface roughness(Ra, μm), revolutions(rpm) and salt water flow rate(mL/min). When sirocco fan surface roughness( Ra) was in the range of 0.27~7.65 μm, the spray particle size was 0.117~1.360 μm. And then more than 90% of spray particles were found to be less than 0.50 μm. When sirocco fan surface roughness(Ra) was in the range of 12.70~22.84 μm, the spray particle size was 2.51~184.79 μm and more than 98% of spray particles were found to be less than 13.59 μm. To analyze the effect of fan rotation speed on the size and distribution of spray particles, when surface roughness Ra was fixed 0.27 μm and fan rotation speed and salt water flow rate was respectively changed at 3,800~5,600 rpm and 2.77~8.28 mL/min, spray particle size was 0.341~0.541 μm. And when salt water flow rate was 9.74 mL/min and fan rotation speed was 3,800~5,200 rpm, spray particle size was in the range of 29.29~341.46 μm and in case of 5,600 rpm more than 98.23% of spray particles were in the range of 2.51~13.59 μm.

Abstract
서 론
재료 및 방법
결과 및 고찰
적 요
Literature Cited

• 유영선(국립농업과학원 농업공학부) | Young Sun Ryou (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA) Corresponding author
• 장재경(국립농업과학원 농업공학부) | Jae Kyung Jang (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)
• 김형권(국립농업과학원 농업공학부) | Hyung Kweon Kim (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)
• 김영화(국립농업과학원 농업공학부) | Young Hwa Kim (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)
• 이태석(국립농업과학원 농업공학부) | Tae Suk Lee (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)
• 오성식(국립농업과학원 농업공학부) | Sung Sik Oh (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)
• 진병옥(국립농업과학원 농업공학부) | Byung Ok Jin (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)
• 오경민(국립농업과학원 농업공학부) | Gyoung Min Oh (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)
• 강태경(국립농업과학원 농업공학부) | Tae Kyoung Kang (Dept. of Agricultural Engineering, National Institue of Agricultural Science, RDA)