Potential Benefits from Sharing Rainwater Storages Depending on Characteristics in Demand

Title
Potential Benefits from Sharing Rainwater Storages Depending on Characteristics in Demand
Author(s)
서용원박선영[박선영]김영오[김영오]
Keywords
RELIABILITY-ANALYSIS; HARVESTING SYSTEMS; GREATER SYDNEY; WATER SAVINGS; OVERFLOWS; ARIZONA
Issue Date
201503
Publisher
MDPI AG
Citation
WATER, v.7, no.3, pp.1013 - 1029
Abstract
A rainwater harvesting system (RWHS) is an alternative water resource that collects and stores rainwater from rooftops. It helps smooth out variations in water supply and sustainable water resources management. In this study, we investigated the potential benefits from sharing RWHS with nearby neighbors in a community. We introduced different mean, variance, and correlation in water demand for each water user. A simple case of a community composed of four prospective users is introduced to investigate the benefit from sharing RWHSs. Using the historical rainfall records from four catchments in South Korea, a storage-reliability-yield analysis is applied to obtain the required storage and corresponding reliability for a given yield ratio. The results indicate that the required total storage is reduced when RWHSs are shared among users and the rate of reduction is proportional to the degree of sharing. The required total storage was reduced down to 61% compared to the original storage when RWHSs are shared for a target reliability of 80%. The benefit from sharing also depends on the demands, which are different among users. Test cases with different means and variances as well as correlation disclose the conditions when the benefit from sharing RWHSs is maximized. The result showed that difference in mean and variance additionally reduces the required storage up to 3% and correlation in demand also as much affects the required storage.
URI
http://hdl.handle.net/YU.REPOSITORY/33057http://dx.doi.org/10.3390/w7031013
ISSN
2073-4441
Appears in Collections:
공과대학 > 건설시스템공학과 > Articles
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