• Title, Summary, Keyword: Finebubble

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Investigation on Injection Rate and Microscopic Spray Characteristics of Fine Bubble Diesel Fuel (미세버블 디젤 연료의 분사율과 미시적 분무특성에 대한 연구)

  • Chen, Hai-Lun;Lee, Seungwoo;Kim, Kihyun
    • Journal of ILASS-Korea
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    • v.25 no.1
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    • pp.15-20
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    • 2020
  • This study aims to investigate injection rate and microscopic spray characteristics of diesel fuel containing fine air bubble (FBD). fine bubble was generated by cavitation theory using bubble generator. Fuel spray was injected into constant volume chamber and visualized by high speed camera. The injection rate data was acquired with bosch tube method. Injection rate of finebubble diesel was very similar with that of diesel. It showed slightly faster injection start by 5 ㎲ attributed to the low viscosity characteristics. In microscopic spray visualization, fine bubble diesel spray showed unsymmetric spray shape compared with diesel spray. It also showed very vigorous spray atomization performance during initial spray development. Improved atomization was also attributed to the low viscosity and surface tension of finebubble diesel fuel.

The Effect of Environmental Fine Bubble on the Production of Ginsenoside during the Growth Period of Ginseng Cultivation (인삼 재배시 생육기간 동안 환경적 요인인 미세기포수가 ginsenoside 생성에 미치는 영향)

  • Ahn, Chul-Hyun
    • Journal of the Korea Convergence Society
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    • v.8 no.12
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    • pp.1-7
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    • 2017
  • This study was conducted to investigate changes in ginsenoside by continuously treating fine bubble, which are mainly used for environmental purification, in 2-year-old ginseng. The ginsenoside content and composition of ginseng leaves and roots were analyzed for 4 months (120 days) after application of Fine bubble. As a result of treatment with common water in leaves, only Re of protopanaxatriol was significantly higher and As a result of treatment with fine buble, it was confirmed that protopanaxadiol Rb1, RC, Rb2 and Rd components were also increased. Especially, the increase of Re and Rb1 resulted in an increase of total ginsenoside. The ratio of PD / PT to ginseng was 0.811 in finebubble treated leaves and 1.28 in root. The fine bubble treatment induced the synthesis of ginsenoside from the roots and resulted in a PD / PT ratio of close to 1. Therefore, this study suggests a method of cultivating high quality ginseng using fine bubble water and suggests possibility of using it as a functional food material which can be used with leaves as well as roots.

Effect of Fine Bubble Treatment on the Growth of Two-year-old Ginseng (2년 근 인삼재배 시 파인버블(Fine bubble)처리가 생육에 미치는 영향)

  • Ahn, Chul-Hyun
    • Korean Journal of Plant Resources
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    • v.30 no.5
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    • pp.549-555
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    • 2017
  • The production of ginseng cultivation is decreasing due to shortage of cultivated land and climate change, so additional methods are needed. Therefore, the physiological and morphological characteristics of finebubble were analyzed by applying them to ginseng cultivation which is the representative crop of Korea. The application of fine bubble water to 2 year old ginseng showed that stem length and leaf were increased, and weight increased as main root increased in root. In particular, it is shown that the weight of roots increases with the increase of leaf size. This is because the total chlorophyll content is high and it is judged to be related to the increase of photosynthesis efficiency. When the results of this study were confirmed, it was confirmed that ginseng cultivation using fine bubbles showed no inhibition of growth of ginseng. According to the results of physiological characteristics and subdividing results, It was confirmed that the growth of about 10% to 15% of the growth was increased and that the growth of ginseng was increased by applying the fine bubble when growing ginseng.