About Waterwatt

Ten water circuits from intensive energy and water consumer companies, from different industrial sectors (Steel, Non-Ferrous Metals, Chemistry, Pulp and Paper, Food) have been studied and modeled by the consortium. A reduction of energy consumption of at least 10% in all project pilot case studies is expected. The objective was to cover the main energy consuming circuits with the highest optimization potential. The selection of representative circuits will take place under consideration of the following aspects:

  • Circuit function: cooling, gas washing, rinsing, steam production (condensate circuit) and process operation (fracking, descaling, quenching,etc.);
  • Circuit units: pump types, pipe material and length, cooling/ gas washing tower types, integrated treatment types (sand filter, reverse osmosis,etc.);
  • Technical parameters: water flow, pressure, energy consumption, required water quality.

The case studies were performed with selected representative IWCs. Their units were characterised, specific energy consumption was measured and measures for the improvement of energy efficiency were developed. For reasons of comparability, specific energy consumption per pumped m3 was taken as the main benchmark. Furthermore, regional factors and sociological boundary conditions for circuit operation were studied and transferability of the specific energy consumption and improvement measures to other circuits was evaluated.

Download the case studies report from the publications page or visit the case studies section at the E3 Platform for further information.