Analysis of Potable Water Savings Using Behavioural Models

Cordova, Marcelo Marcel; Ghisi, Enedir

doi:10.5772/32647

Cited by 2 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The water balance simulation for RWHS may be based on two commonly exploited supply-spillage approaches such as Yield After Spillage (YAS) and Yield Before Spillage (YBS), as described in Jenkins et al (1978) and Fewkes (2000). However, Cordova and Ghisi (2011) showed that results from simulations based on YBS and YAS were very similar. In the present work, the authors adopted the YBS approach because it represents more closely the automatic operation of the pumping system in buildings that is triggered whenever the upper reservoir level reaches a minimum level.…”

Section: Water Balance Simulation In the Rwhsmentioning

confidence: 71%

A procedure to analyze the viability of rainwater harvesting systems in urban areas based on pre-defined diagrams

Sampaio¹,

Alves

2017

RBRH

View full text Add to dashboard Cite

Giving some specific precipitation regimes and technical design parameters, urban Rainwater Harvesting Systems (RWHS) may represent an alternative source to drinking water supply system promoting its conservation and rational use. The use of RWHS requires the definition of generic and simplified method for sizing RWHS accumulation tanks, which is has being considered the most expensive component of the system. Additionally, several methods have being used to define reservoir volumes leading to a wide variety of final reservoir volumes many of them over estimated. The main objective of this article is to present a new methodology to define RWHS reservoir volumes considering technical and economic viabilities of the systems. The proposed methodology was incorporated into a Decision Support System (DSS), named SARA. The method provides an alternative way to define smaller RWHS reservoir volumes once it accepts lower levels of reliabilities giving that the RWHS is considered a complimentary system, better suited for urban areas. RWHS design diagrams are built as a result of the methodology in an attempt to offer a tool to initial and rapid design of reservoir volumes for RWSH. The method was applied to different urban areas in Brazil.

show abstract

Section: Water Balance Simulation In the Rwhsmentioning

confidence: 71%

A procedure to analyze the viability of rainwater harvesting systems in urban areas based on pre-defined diagrams

Sampaio¹,

Alves

2017

RBRH

View full text Add to dashboard Cite

show abstract

“…Simulations were conducted using the Netuno programme, version 4, to estimate the potential for potable-water savings by means of rainwater harvesting in each of the representative buildings in all scenarios. More details on the algorithm o Netuno and its comparison with different methods can be found in references [23][24][25] Finally, an economic analysis was performed for each case simulated to determine it feasibility, considering different water-tariff formats.…”

Section: Methodsmentioning

confidence: 99%

“…The simulation of rainwater harvestingrainwater-harvesting systems was conducted using the Netuno programme, which presents the results of the potential for potable waterpotable-water savings by using rainwater in relation to the storage-tank capacity. Its methodology is based on behavioural models, and all its equations can be found in [23][24][25]. The input parameters included daily rainfall data, the first flush, the catchment area, daily per capita water consumption, the number of residents, the rainwater demand, and the runoff coefficient.…”

Section: Rainwater Harvestingrainwater-harvesting Systems' Simulationmentioning

confidence: 99%

The Impact of the Water Tariff on the Economic Feasibility of Rainwater Harvesting for Use in Residential Buildings

Borgert,

Ghisi

2024

Water

View full text Add to dashboard Cite

This study aims to analyse the technical viability and economic feasibility of rainwater-harvesting systems for single- and multifamily residential buildings in the city of Florianópolis, Brazil. Simulations were conducted for representative buildings in the city under different water-usage scenarios and system designs, in a total of 36 simulation scenarios. An economic analysis was performed for four scenarios over a twenty-year period. Both initial and operational costs were considered, and the net present value, internal rate of return, and payback were used as feasibility indicators. For houses, between 60.1% and 74.8% of the cases were economically feasible, achieving a discounted payback period ranging from 6.2 to 8.6 years. For flats, between 57.8% and 64.2% of the cases were economically feasible, achieving a discounted payback period ranging from 4.8 to 5.6 years. As the water tariff in the city underwent changes recently, the former and current tariff formats were compared. The current tariff format provides more economic benefits for saving potable water, and leads to a higher net present value and a shorter discounted payback period. This research stands out from previous studies as it examines a new scenario in the use of rainwater-harvesting systems.

show abstract

Analysis of Potable Water Savings Using Behavioural Models

Cited by 2 publications

References 33 publications

A procedure to analyze the viability of rainwater harvesting systems in urban areas based on pre-defined diagrams

A procedure to analyze the viability of rainwater harvesting systems in urban areas based on pre-defined diagrams

The Impact of the Water Tariff on the Economic Feasibility of Rainwater Harvesting for Use in Residential Buildings

Contact Info

Product

Resources

About