OPTIMIZATION OF WATER PUMPING COSTS BY HIERARCHICAL METHODS

Keywords: SHEFFIELD UNIVERSITY, SHEFFIELD POLYTECHNIC, YORKSHIRE WATER AUTHORITY, OPTIMISATION, COSTS, SYSTEMS, PERFORMANCE, NETWORKS, SAVINGS, UNITS, COMPUTERS, WATER, METHODS, WATER SUPPLY, INDICES, OPTIMAL, OPERATIONAL, DEMAND, ECONOMICS, PUMPING, SUPPLY, FORMULATION, TECHNIQUES, CONTROL, ELECTRICITY, MODIFIED, HATFIELD, YORKSHIRE, UK