Simultaneous design and control optimisation of combined rainwater harvesting and flood mitigation systems
File(s)
Published version
Author(s)
Soh, Qiao Yan
Acha, Salvador
Shah, Nilay
O’Dwyer, Edward
Type
Journal Article
Abstract
The design and operational parameters of large-scale rainwater harvesting (RWH) systems should be optimised for its local environment to maximise their efficiency. This paper looks to address the barriers in RWH system performances when their design and operational strategies are optimised separately. This is achieved using a framework which identifies a set of candidate optimal designs with their corresponding optimal control policies by optimising each possible combination of control policy and actuator location. The globally optimal configuration is then determined using a high-resolution simulation model that evaluates their performance under a wide range of historically observed rainfall profiles. When implemented for a RWH system in a tropical city, the optimal configuration was found to improve harvested water yields by 15%–27% in comparison to when only its design is optimised. The 15% improvement is also achieved with a 25% reduction in capacity, reducing spatial competition with other key utilities for the estate.
Date Issued
2025-08-01
Date Acceptance
2025-06-09
Citation
Resources, Conservation and Recycling, 2025, 222
ISSN
0921-3449
Publisher
Elsevier BV
Journal / Book Title
Resources, Conservation and Recycling
Volume
222
Copyright Statement
© 2025 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
10.1016/j.resconrec.2025.108459
Publication Status
Published
Article Number
108459
Date Publish Online
2025-07-05