| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1062986 | Resources, Conservation and Recycling | 2013 | 9 Pages |
•Determine optimal size of storage tank, system reliability, water saving for RWH.•Deals with tropical rainfall which behaves differently from the temperate rainfall.•Address the issue of water shortage and flood problems simultaneously.
Large scale rainwater harvesting (LSRWH) is a promising alternative to address security and flood issues in urban areas. The development and planning of a LSRWH for an eco-community involves comprehensive site-planning, systems planning and design, which includes the rainwater source collection (roof) to the storage tank, the distribution and allocation system. This paper describes a new technique for designing a LSRWH for a community of 200 houses with an average of 4 persons per house and an average total daily water demand of 160 m3. It was found that the optimal size storage tank for a 20,000 m2 roof area is 160 m3 with a 60% reliability. The application of this model to the case study revealed a significant water saving up to 58% .The total cost for this system is 443,861 USD over a life-span of 25 years.
