Uninterruptable power supply
(UPS) and operator machine interface (OMI)
Smart sensors and actuators
Types of DDC controllers
Application specific
General purpose
Programmable logic
Basics of HVAC controls
Commonly used control systems
Control actions
Control loops
3. Design Principles
Control valves
Types of control valves
Flow characteristics
Location of two-way and three-way
control valves
Selection of modulating control
valves
Sizing of control valves
Control dampers
Types of control dampers
Flow characteristics
Parallel blade vs. opposed blade
Sizing of control damper and
actuator
Damper leakage
Electronic sensors
Temperature sensors
Humidity sensors
Pressure sensors
Flow meters
References:
Honeywell, 1991. Engineering
Manual of Automatic Control: for Commercial Buildings - Heating, Ventilating,
Air Conditioning, SI ed., Honeywell, Minneapolis, Minn., pp. 3-7 &
29-33. [697.9352
E5]
Shadpour, F., 2001. The Fundamentals
of HVAC Direct Digital Control: Practical Applications and Design,
2nd ed., Chapters 1-3 & 9-11, Hacienda Blue, Escondido, CA. [697
S52]
Useful Tool:
ASHRAE SI Guide Conversion.
(for converting non-SI units to metric)
| Created: Nov 2002 | Update:
19 Jan 2003 | By: cmhui@hku.hk |