Methodology to Optimize Rainwater Tank-sizing and Cluster Configuration for a Group of Buildings

The behavior of a rainwater harvesting system depends on some variables that cannot be controlled, such as rainfall, building roof size and water consumption. selection regarding tank-size will affect the performance cost–benefit ratio. criterion employed for this is based need volume-storage typically, yield large-sized tanks, especially when amount higher during rainy seasons. This article presents methodology modelling harvesting, storage, consumption, different configurations set buildings, called clusters, where all buildings collect, store consume water. allows analyzing with indicators, what best recommended configuration tank-sizing, storage ratio exhibited, thus avoiding situation being underutilized. proposed applied to case study at university, in Mexico City. In case, dynamics per day modeled over year, considering monthly rainfall averages, 2 groups made up out 4 collecting capabilities consumption each, allowing analysis 9 cluster tank-sizing dimensions. results are analyzed by means annual indicators as: decrease volume used from public network, days autonomy system, coefficient $$R$$ (which relates spilled empty volume). then most configuration.