The constant-speed approach to AC motors made a lot of sense when energy was cheap and drives technology was in its infancy. With their latest advances, adjustable speed drives can provide one of the best energy efficiency options for a plant.
The Alliance to Save Energy conducts ongoing research of the competitor within, a.k.a. organizational barriers to energy efficiency. The barriers to energy management are rooted in the very complexity of modern organizations. Communications and incentives are the key to overcoming these barriers.
Author: Christopher Russell, Director, Industry Sector
Fine powders often need air injection to increase flow rates to an acceptable level. With entrained or injected air, powders flow like water, but when deaerated, the extremely low flow rate may be confused with a hang-up or arching condition.
There's a myth in plants that HART offers little for Plant Control Systems and Enterprise Level Networks. But Ed Ladd from the HART Communication Foundation writes that by accessing the data in HART devices on a "full-time" routine basis increases performance, integrity, and reliability of plant control and enterprise level systems.
Author: Ed T. Ladd, Jr., HART Communication Foundation, Austin, Texas