| Title |
Hydrological Evaluation of Rainwater Harvesting: 1. Hydrological Analysis |
| Authors |
유철상 ( Chul Sang Yoo ) ; 김경준 ( Kyoung Jun Kim ) ; 윤주환 ( Zu Hwan Yun ) |
| Keywords |
Inflow; Long-term rainfall-runoff analysis; Rainwater utilization; Runoff coefficient |
| Abstract |
This study revised a model for hydrologically analyzing rainwater harvesting facilities considering their rainfall-runoff properties and the data available. This model has only a few parameters, which can be estimated with rather poor measurements available. The model has a non-linear module for rainfall loss, and the remaining rainfall excess (effective rainfall) is assumed to be inflow to the storage tank. This model has been applied for the rainwater harvesting facilities in Seoul National University, Korea Institute of Construction Technology, and the Daejon World Cup Stadium. As a result, the runoff coefficients estimated were about 0.9 for the building roof as a rainwater collecting surface and about 0.18 for the playground. This result is coincident with that for designing the rainwater harvesting facilities to show the accuracy of model and the simulation results. |