Variable speed drives: principles and applications for energy cost savings
Many applications of variable speed drive technology fall in the cracks between traditional engineering disciplines. This book helps practicing engineers learn about the technical & economic potential of this technology. It presents the electrical, hydraulic, chemical & instrumentation information necessary for sound evaluation of variable speed drive applications.The author also offers hints for selling management on a retrofit project.
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actuator Affinity Law Alternate Final Control Application of Control approximately billing brake horsepower bypass calculated Centrifugal Fan centrifugal pump constant torque control loop control strategy control valve courtesy damper demand charges devices discharge pressure economic electronic variable speed equipment estimated Fan Curve Final Control Elements flowmeter fluid Frequency Drive Technology fuel full speed fully loaded header pressure heat HVAC Applications Hydraulic Basics hydraulic energy industrial Installed Cost line speed liquid losses maintenance measurement Motor Capacity motor speed operating costs associated output percent piping Plant Utilities positive displacement power consumption power factor power factor correction pressure drop Prime Utility Costs psig Pulse Width Modulation pump curves pumping system rate structures result Scenario simple payback Speed Drive Applications speed drive technology steam temperature throttling tion torque Typical Variable Speed Valves Application Variable Air Volume Variable Frequency Drive variable speed drive vary voltage waveforms