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김원만,Kim, Won-Man 한국상하수도협회 1976 水道 Vol.8 No.-
이글은 국제상수도협회회원인 본회박형석감사의 제공으로 입수하여 본회 김원만 부회장의 회장의 번역으로 전문 번역게재한다.
급수전분포에 따른 배수지의 경제적 표고선정에 관한 연구
김원만,옥삼복 ( Won Man Kim,Sam Bok Ok ) 한국물환경학회 1992 한국물환경학회지 Vol.8 No.2
This study was carried out to select the most economical altitude of distribution reservoir to minimize electric cost that is the major portion of costs for the maintenance of water supply service system. The water distribution patterns by the altitude in Seoul have been classified into three types. As required pressure and area(required eletric power ratio) (y) by the water tap distribution altitude is the function of economical distribution reservoir altitude (x), the equations are summarized as follows; 1. Majority of the water taps are located in lower altitude : case I y=0.010x² -0.600x+102.000 Economical distribution reservoir altitude(45.0m) 2. Maiority of the water taps are located in higher altitude : case II y=0.013x²-1.500x+164.000 Economical distribution reservoir altitude(72.7m) 3. Water taps are evenly located in both lower and higher altitued: case III y=0.010x²-0.902x+129.030 Economical distribution reservoir altitude(61.0m)
서울시 일부 급수지역에 대한 경제적 배수지 설치표고 평가
김원만,옥삼복 ( Won Man Kim,Sam Bok Ok ) 한국물환경학회 1993 한국물환경학회지 Vol.9 No.1
In this study, it is necessary to consider the established conditions such as water supply capacity, diameter and types of pipeline, the lenghth of pipeline and various assumption in order to decide the low water level of the economical elevation of distribution reservoir by using water tap distribution. However, as these assumed conditions could be changed considerably according to the regional circumstances, investigating distribution ratio of water tap in each elevation in the distribution reservoir installation area could calculate a general formula in order to obtain the best low water level of the distribution reservoir installation elevation. Therefore, if we investigate the distribution of a water tap in the distribution reservoir installation area 30m(above sea level) to the highest by every l0m by using this general formula it is possible to find out applicable and appropriate low water level of the best installation elevation of the reservoir. Let He(m) be the most economical installation elevation of distribution reservoir in the same distribution sector, R_(W1)(%) be the largest distribution ratio of water tap in the elevation classified by every l0m, R_(W2)(%) be the distribution ratio of water tap in l0m higher than that of R_(W1). Following formula was calculated by analyzing the relationship between He, R_(W1)-R_(W2). He=7,692/(R_(W1)- R_(W2))+84