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Mean Size of Droplets Ejected from Humidifier and Distributions of Relative Humidity As Affected by Different Humidifying Methods in Graft-taking Enhancement System  

박현수 (전북대학교 대학원 농업기계공학과 (현 동양물산기업주식회사))
최유화 (전북대학교 대학원 농업기계공학과)
김용현 (전북대학교 농과대학 생물자원시스템공학부 (농업과학기술연구소))
Publication Information
Journal of Bio-Environment Control / v.12, no.1, 2003 , pp. 12-16 More about this Journal
Abstract
The effect of humidifying methods on the mean size of droplets ejected from humidifier and distributions of relative humidity in a graft-taking enhancement system (GTES) was investigated. The mean sizes of droplets ejected from an ultrasonic humidifier and a steam humidifier with electrodes were 7.58$\pm$0.14 and 9.01$\pm$0.06 $\mu$m, respectively. Assuming that the particles ejected from humidifiers were mutually combined with distance, the mean diameter of droplets became larger as the distance apart from the outlet of humidifiers increased. When the relative humidity in GRS was controlled at 90% using the ultrasonic humidifiers, the average relative humidity at the height of 0.4, 1.1 and 1.8 m were 92.1$\pm$5.3, 90.9$\pm$5.6, and 89.7$\pm$6.8%, respectively. However, the average relative humidity using the steam humidifier with electrodes showed 93.4 $\pm$5.4, 90.7$\pm$5.9, and 89.3$\pm$7.0%, respectively. Therefore, it was concluded that humidification by ultrasonic humidifier would be appropriate for the uniform distribution of relative humidity in GTES.
Keywords
Humidifier; grafted seedlings; graft-taking; relative humidity;
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  • Reference
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