Energy Audit of a Water System Network

Abstract

The energy audit of water networks has to be focused on DIRECT and INDIRECT interconnected facts such as:

• i - Operational schedule of pumping stations and available storage to attend several demand scenarios;

• ii - Instalation of ACV’s — Automatic Control Valves — to avoid extreme pressure changes due to hourly demand variations influencing network leakages;

• iii - Customer water volume measurements: the measured water volume consumption is influenced by the domestic storage dimensions! Generally, if any, these storages are emergency ones operating at maximum level with small valve openings for water admission, resulting in:

  • a - Errors in the water consumption measurement

  • b - Dead water in the customers’ storages;

These facts, with illustrated examples are presented in the paper.