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      저자 : 최영대 ( Young Dae Choil ) (검색결과 1 건)
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      • 다양한 압력조건하에서 지중점적관의 유출량 평가

        이상훈 ( Sang Hun Lee ),공동혁 ( Dong Hyok Gong ),정기열 ( Ki Yuol Jung ),전현정 ( Hyen Chung Chun ),최영대 ( Young Dae Choil ) 한국농공학회 2020 한국농공학회 학술대회초록집 Vol.2020 No.-

        Subsurface drip irrigation system increase waster use efficiency, reduce run off and thus increase crop yields. There are many different types of drip lines to be purchased for irrigation system in a market. Therefore, the proper selection of drip line is a key factor for subsurface drip irrigation systems. The objective of this study was to evaluate the effluent rate of various subsurface drip lines according to the different pressure condition. Four drip lines that are commonly found in a market were selected based on the type and function of dripper. Each drip line was setting with pressure gauges at a certain interval and applied pressure from 0.5 bar to 4.0 bar at 0.5 bar intervals. Effluent rates were evaluated with the ratio of actual effluent amount and retail suggested effluent amount. Effluent rates showed various values based on the type and function of drippers. The drip lines without controlling of water drop had 68.6% of effluent rate at 0.5 bar pressure, which was significantly greater than 11.7% for the drip lines with controlling of water drop. Drip lines with pressure compensation had uniform effluent rate at a certain pressure. However, the effluent rate of non-pressure compensation line linearly increased from 7.2% to 113.1% on the increase pressure. The recommended pressures for subsurface drip irrigation system are ranging from 2.0 bar to 3.0 bar, where it had 97.2% effluent rate. The result of this study showed that the drip lines have various effluent rate, and thus the selection of proper drip lines is very important to function subsurface drip irrigation system along with proper pressure application.

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