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Chapters

This textbook is organized into 27 chapters covering 581 concepts.

Chapter Overview

  1. Air, Pressure and the Fan - Introduces airflow, CFM, air velocity, static pressure, air density and temperature, the core vocabulary every later chapter uses to describe what a fan does.
  2. Airstreams, Total Pressure and Standard Air - Covers velocity and total pressure, standard air, and the hot, wet, corrosive, dusty and explosive airstreams that shape how a fan must be built.
  3. Basic Fan Anatomy - Names the core parts of every fan (housing, impeller, shaft, bearings, motor, inlet, outlet and drive train) and basic housing features such as access doors and screens.
  4. Centrifugal, Axial and Mixed Flow Fans - Presents the three fan families, scroll and tubular housings, inline fans, roof and wall ventilators, and the difference between commercial and industrial duty.
  5. Roof, Wall and Specialty Exhaust Fans - Covers kitchen, smoke and heat, fiberglass, plenum, tubeaxial and gravity relief units, roof exhauster styles, and upblast versus downblast discharge.
  6. Industrial Fans and Application Product Lines - Covers plug fans, vaneaxials, pressure blowers, radial fans, utility sets, filtered supply and dust collection fans, and lab exhaust plume dilution.
  7. Housing Construction and Exploded Views - Details scroll side plates, cutoffs, split housings, framing, access panels and roof exhauster parts, and how to read an exploded view.
  8. Centrifugal and Axial Impeller Types - Introduces impeller blades, back plates, shrouds and hubs; backward inclined, forward curved, mixed flow and axial impellers; orientation and balancing.
  9. Impeller Construction and Material Handling - Covers airfoil and backward curved designs, double width double inlet impellers, axial blade geometry, hub types, and radial, material-handling and paper-handling impellers.
  10. Fan Performance, Curves and Ratings - Explains brake horsepower, fan efficiency, fan and system curves, the operating point, stall, density corrections, sound ratings and fan class.
  11. Drives and Standard Fan Arrangements - Compares direct and belt drive, couplings, sheaves and belts, overhung and center-hung impellers, and the standard Arrangements 1, 2, 3, 4 and 7.
  12. Discharge Positions and Rotation - Introduces viewing a fan from the drive side, discharge positions and angles, angular discharges, rotation, and the basic motor positions.
  13. Rotation and Discharge Codes - Covers clockwise and counterclockwise designation, the complete rotation and discharge code, motor position restrictions, and the conventions for inline and axial fans on orders.
  14. Fan Motors and Enclosures - Introduces induction and EC motors, NEMA frames, ODP, TEFC, TEAO, TENV and explosion-proof enclosures, service factor, insulation class and motor bases.
  15. Motor Ratings, Speed Control and Positioners - Covers variable frequency drives, inverter-duty, premium-efficiency and hazardous-location motors, thermal protection, slide and pivot bases, and the positioners used to adjust belt tension.
  16. Bearings, Shafts and Shaft Seals - Covers bearing types and life, mounting, lubrication, bearing seals, positioners and sensors, shaft features, and the family of shaft seals.
  17. Bearing Details, Lubrication and Pedestals - Covers L-10 and L-50 life, split and solid pillow blocks, oil-mist and static-oil lubrication, labyrinth and taconite seals, fixed and floating rules, and pedestals.
  18. Inlets, Outlets and Flow Control - Covers inlet boxes and funnels, evasés, transitions, silencers, the damper families, inlet vanes, speed control and turndown, and how each one changes a fan's airflow.
  19. Damper Details and Duct Connections - Details gravity damper styles, blade types, actuators, blast and slide gates, lab exhaust dampers, flexible connectors and flange bolt patterns.
  20. Construction Classes, Materials and Spark Resistance - Covers construction classes, materials and coatings, spark-resistant construction, high-temperature and high-moisture basics, and insulated fans, matching a fan's build to its airstream.
  21. High Temperature, Leak-Tight and RTO Construction - Covers cooler boxes, heat shields, thermal expansion, spark-resistant Types A and B, leak-tight fans and leakage testing, and the service conditions of RTO duty.
  22. Fan Bases and Vibration Isolation - Introduces unitary, isolation and inertia bases, isolator deflection, neoprene pads, rubber-in-shear isolators, seismic restraint, and piezometer rings for measuring a fan's airflow.
  23. Spring Isolators, Restraints and Field Measurement - Covers spring isolator types and how they mount, snubbers, thrust restraints, shaft alignment, anti-backspin devices, and verifying a fan's airflow in the field.
  24. Advanced Arrangements and Configuration Variants - Covers Arrangements 8, 9 and 10, plug, plenum, swingout and clamshell variants, and the motor position rules specific to each arrangement.
  25. Fan Laws, System Effect and Sound - Applies the fan laws and speed-change calculations, and covers system effect, fans in parallel and series, the efficiency curve, Fan Energy Index and octave-band sound.
  26. Reading Catalogs and Performance Tables - Teaches catalog structure, model codes, performance tables and interpolation, rating conditions, operating limits, and how FanPedia relates to current catalogs.
  27. Fan Selection and Writing the Specification - Brings everything together: application requirements, selecting family, impeller, arrangement, construction, motor, drive and accessories, writing and reviewing the specification, and the capstone.

How to Use This Textbook

Read the chapters in order. Every concept is introduced only after the concepts it depends on, so each chapter builds on the ones before it. Each chapter lists the earlier chapters it relies on; if a term is unfamiliar, go back to the chapter that introduced it.

Note: Each chapter includes a list of concepts covered. Make sure to complete prerequisites before moving to advanced chapters.