International Rainwater Catchment Systems Association
International Rainwater Catchment Systems Conferences
  Next conference
  1st, Hawaii
  2nd, St Thomas
  3rd, Khon Kaen
  4th, Manila
  5th, Taiwan
  6th, Nairobi
  7th, Beijing
  8th, Tehran
  9th, Petrolina
  10th, Mannheim
  11th, Texcoco
  12th, New Delhi
  13th, Sydney
  14th, Kuala Lumpur
  Join IRCSA
  IRCSA Board

9th International Rainwater Catchment Systems Conference
"Rainwater Catchment: An Answer to the Water Scarcity of the Next Millennium."
Petrolina, Brazil - July 1999

Section 4: Technology of Rainwater Catchment Systems

Paper 4.11

The Sizing of Rainwater Stores Using Behavioural Models

Alan Fewkes & D Butler
Department of Building and Environmental Health
The Nottingham Trent University
Burton Street, Nottingham, NG1 4BU, UK


The collection of rainwater from roofs, its storage and subsequent use is a simple method of reducing the demand on both the public water supplies and waste treatment facilities. The capacity of the rainwater store is important because it affects both system and installation costs.

The rainwater store can be sized using one of three general types of model, namely, Critical period methods, Moran related methods and Behavioural models. This paper concentrates upon the use of behavioural models for the sizing of rainwater stores.

Behavioural models simulate the operation of a reservoir with respect to time. The operation will usually be simulated over a given period of time using a time step of a minute, hour or month. The operation of the store is simulated using either a yield after spillage (YAS) or yield before spillage (YBS) algorithm. This paper evaluates the accuracy of behavioural models using different time steps and different sizing algorithms applied to both large and small stores.

PDF of full document (12pp, 70kb)

Note: The IRCSA proceedings section is still new and under active management, If you find any problems, ommissions or corrections please contact the administrator so we can put things right.
Top of Page