ELIVAC has over 100 sets of patented energy-saving units operating in
major power plants, ranging from 15 to 1000 MW generator sets. These
units utilize a three-pump, four-stage Roots-liquid ring pump system to
maintain condenser vacuum. The Roots pumps are all equipped with
variable frequency drive (VFD) computer control, and the fore pumps use
more efficient two-stage liquid ring pumps. This configuration provides
the potential for improved vacuum levels and coal-saving capabilities.