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Energy Efficiency

                  Pumps & Fans Control (Buildings)

                  Pains & drivers

                  • 70% of electrical consumption in Industry is used to turn motors. 33% of them control Pump or Fan Applications
                  • Most of Pump and Fan applications are driven by a DOL solution of SoftStarter. This means that the motor runs at full speed and the flow variation is obtained. The energy consumption falls very little when the flow decreases. At 80% of the nominal flow, the energy consumption remains at 95%. The potential for savings on the installed base is huge
                  • CEMEP association has made a simulation for the European market. The use of Drive in such applications could save 900 M Euro/year and 4 Million tonnes of CO2/year

                  How can a customer manage energy more efficiently?

                  • To save energy we have to:
                    - drive the motor with a frequency inverter instead of a contactor or Soft Start
                    - remove the restriction device (valve or damper)
                  • The AC Inverter allows to adjust the speed of the Pump or the Fan, therefore the Flow
                  • The result is huge saving compared to conventional solutions:
                    - up to 50% for Fan, Pay back of the drive within one Year
                    - up to 30 % for a Pump , Payback within 2 years

                  Solutions or architectures used in the application

                  Solutions or architectures used in the application

                  A) Solution without drive
                  The motor turns at fixed speed according to the frequency network and the number of poles.
                  Example : 3600 Rpm for 60 Hz
                  Motor 2 poles
                  The only way to adjust the Flow is a restriction device (damper) generating losses

                  B) Energy Saving Solution with drive
                  The Drive (named also frequency inverter) allow to varies the frequency therefor the motor speed.
                  The Flow is directly proportional to the speed.
                  Damper or valve are not any more needed

                  C) Energy Consumption with and without drive
                  Example for Fan Application

                  Outlet damper
                  Variable speed drive
                  50% of Energy saving at 80% of the nominal flow

                  Example for Pump Application

                  Control valve
                  30% of Energy saving at 80% of the nominal flow

                  Schneider Electric Solutions
                  Schneider Electric Solutions

                  Altivar 61, Magelis, Vijeo

                  A1, Q1, KM1, Q2, Q3, S, S2, T1

                  IHP 2c, C60N, CT

                  Altivar 21