In spite of their large operating cost, most pump systems are inefficient by design. Among the common design problems are non-optimal pipe sizing, control valve utilization and, perhaps most common, incorrectly sized pumps. How a pump operates depends on the system, so improvements must focus on the system as a whole.
The traditional approach to experimentation, often referred to as the scientific method, requires changing only one factor at a time (OFAT), but this method only allows one to see things one dimension at a time. By varying factors only at two levels each, but simultaneously rather than one at a time, experimenters can uncover important interactions.
Author: Mark J. Anderson and Patrick J. Whitcomb, Stat-Ease
Designing equipment for solids is not an exact science. The flows of gases and liquids are generally better understood than those of solids. Most production problems arise from flaws in the design. This article presents questions you can ask yourself to ensure reliable flow in your silo.
Author: Joseph Marinelli, Solids Handling Technologies, Inc.