BUILDING AIRFLOW SYSTEM CONTROL APPLICATIONS
Building Airflow System
Control Applications
............................................................................................................ 265
............................................................................................................ 265
............................................................................................................ 267
Variable Air Volume ......................................................................... 267
Constant Air Volume ....................................................................... 268
Ventilation ............................................................................................ 269
Pressurization ...................................................................................... 270
Stack Effect ..................................................................................... 271
General ........................................................................................... 272
Fan Types ....................................................................................... 272
Fan Laws ........................................................................................ 273
Fan Horsepower ............................................................................. 273
Duct System Curves ....................................................................... 274
General ........................................................................................... 274
Effects of Fittings ............................................................................ 276
Effects Of Dampers ......................................................................... 277
General ........................................................................................... 278
Pressure Sensors ........................................................................... 278
Pitot Tube Sensors .......................................................................... 279
263
ENGINEERING MANUAL OF AUTOMATION CONTROL
Contents