지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Leakage in water supply system can cause water resources loss in addition to the water quality degradation. In this research, leakage reduction after establishment of a block system in the area with leakage rate of 69.0 % was investigated using EPANET simulation. The average water pressure for the research area was $5.17kgf/cm^2$ which was relatively high, and several sites were deviated from recommended water pressure ranges(i.e., 1.5 ~ $7.1kgf/cm^2$). However, the average water pressure in the area was reduced to 3.81 and $3.49kgf/cm^2$ after the introduction of block system with a water pressure relief valve(PRV) setting of 3.0 and $2.5kgf/cm^2$, respectively. Under the installation of a PRV with regulating pressure of $2.5kgf/cm^2$, the predicted leakage was reduced from $4,420.3m^3/d$ to $3,028.1m^3/d$, which was equivalent to the leakage reduction from 31.0 % to 23.5 %.
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