Overview
The most suitable fan for a particular application is dependent upon many factors. Initial cost, efficiency, operating and maintenance costs, speed, materials, space constraints, flow rate, pressure, temperature, cleanliness of the product and the range of operating conditions are all considerations in the selection of a fan and driver. Improper selection of the fan/driver can result in higher operating and maintenance costs that far exceed the initial capital cost of the fan and duct system.
In this course, the student will learn the fundamentals of axial and centrifugal fans used in industrial applications and the factors that influence the selection of fans, drivers, flow control devices and other components of a fan system. The student will review the document "Improving Fan System Performance: A Sourcebook for Industry" published by the U.S. Dept. of Energy's Office of Industrial Technologies.
The student must take a multiple-choice quiz consisting of twenty-nine questions at the end of this course to obtain PDH credits.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- The two major categories of fans and their relative merits
- Types of centrifugal and axial fans and their applications
- Influence of noise, rotational speed, airstream characteristics, temperature, variable operating conditions and space constraints on fan and driver selection
- Methods of controlling fans with variable loads
- Fan curves, best efficiency points and regions of instability
- Motors, belt drives, gear drives and adjustable speed drives
- Mitigating start-up current and torque issues
- Fan maintenance and common fan system problems, including contaminant build-up, noise, duct leakage, fan degradation and unstable operation
- Operation of multiple fans in series and parallel arrangements
- Calculation of fan system electrical operating costs
Course
Click on the following link to the PDF document to review the course material before taking the quiz for credit.
Improving Fan System Performance (971 KB)
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