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Cover image for Control and instrumentation technology in HVAC : PCs and environmental control
Title:
Control and instrumentation technology in HVAC : PCs and environmental control
Personal Author:
Publication Information:
Lilburn, GA : Fairmont Press, 2000
ISBN:
9780881733068

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30000010075656 TH7466.5 H674 2000 Open Access Book Book
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Summary

Summary

This title examines the relationship between industrial automation techniques and evolving HVAC systems and looks at how emerging technologies can now be applied to HVAC systems.


Author Notes

Michael F. Hordeski, P.E., holds a BS degree in electrical engineering from the University of Bridgeport, a MS degree in electrical engineering from the University of Southern California, and is a licensed P.E. in control systems engineering


Table of Contents

Chapter 1

p. 1

Heating and Cooling Systems
Thermal Comfort Factors
Relative Humidity
Radiant Temperature
Personal Factors
HVAC Controls
Temperature Control
Humidity Control
Dehumidification
Intelligent HVAC
Dry Air
Problems
Zoning
Oil and Gas Furnaces
Heat Pumps
Electric Furnaces and Combo Units
Capacity Sizing
Hydronic Heating Systems
Hydronic System Controls
Hydronic Piping Systems
Flow Rates
Automatic Shutoff and Refill
Expansion Tanks
Water Hammer
Radiators
Radiant Floors
Comfort Solutions
Weather-responsive Controls
Boiler Ratings
Direct Heating Systems
Radiant Electric
Environmental Risks
Air Conditioning
Geothermal Heat Pump
Maintenance
Ductless Air Conditioners
HVAC Control Functions
Temperature Control
Air Volume Control
Air Quality
HVAC System Classifications
All-Air Systems
Safety Control
Single-path Multi-terminal Systems
Variable Air Volume (VAV)
Single Duct Systems
Induction Reheat (IR) System
Constant Volume Reheat (CVR) Systems
Powered Induction Units (PIU) Systems
Parallel-Path Multizone Blow-through Systems
Dual-duct
Constant Volume Systems
Dual-duct
Variable Volume Systems
Air-Water Fan-Coil Units
Solar Heating Systems
Solar Valves and Controls
Solar Cooling Systems
Alternative Systems
Typical Systems
Air Systems for Room Heating
Liquid Systems
Solar Plus Heat Pump
Absorption Cooling
Expansion Tanks
Differential Thermostats
Variable Flow Control
Control Circuits
Solar Controllers
Solar Heating Modules
Solar Controls and Components
Solar System Components
Modes of Operation
No Demand Mode
Demand Mode
No Energy Mode
Chapter 2 Optimizing HVACp. 37
Airhandler Operation
Zone Control
HVAC Process
Free Cooling
Summer/Winter Mode Switching
Emergency Mode
Freeze Protection
Start-Stop
Emergency Shutdowns
Firestats
Smoke Detectors
Terminal Devices
Electric Relays
Transducers
Motor Starting
Enthalpy and Temperature Measurement
Damper Position
Hot-deck and Cold-deck
CVR Boxes
CVDD Boxes
VAV Boxes
Controller Diffusers
Balancing
Fan Control
Damper
Pressure Drop
Fan Energy
Temperature Control
Smart Thermostats
Zero Energy Band
Gap Control and Self-Heating
Supply Air Temperature
Humidity Controls
Outdoor Air Control
CO[subscript 2] Ventilation
Economizer Cycles
Optimizing Strategies
Winter Optimization
Sumer Optimization
Auto-Balancing
Start-up Program Flow
VAV Throttling
Air Supply Pressure and Temperature Optimization
Chimney Effects
Chapter 3 Boiler and Pump Controlp. 69
Boiler Efficiency
Boiler Instrumentation
Sensors
Boiler Operation Monitoring
Drum Level Controls
Single-element Control
Two- and three-Element Control
Alarms and Safety Interlocks
Boiler Time Response
Feedforward Loops
Conventional Air Control
Dampers
Fans
Pressure Controls
Feedforward Control of Steam Pressure
Fuel Control
Airflow Control
Damper and Fan Control
Furnace Draft Control
Airflow and Furnace Pressure
Fuel-Air Ratio
Fuel and Air Limiting
Feedwater Control
Feedforward Control
Pump Speed Control
Steam Temperature Control
Loop Interaction
Excess Air
Detecting the Flue-Gas Composition
CO Measurement
Flue-gas Temperature
Fuel Savings and Optimization
Air-Fuel Ratio Control
Multivariable Control
Feedforward/Feedback Control
Steam Pressure Optimization
Efficiency Measurements
Pump Optimization
Centrifugal Pumps
Pump Control
On-Off and Two-speed Control
Throttling Control
Reciprocating or Metering Pumps
Rotary Pumps
Safety and Throttling Control
Centrifugal Pumps
Pump Starters
On-Off Pressure Control
Throttling Control Valves
Pump Speed Throttling
Variable-speed Pumps
Variable-speed Drive Efficiency
Types of Variable-speed Drives
Multiple Pumps
Booster Pumps
Water Hammer
Optimizing Pump Controls
Valve Control Optimization
Blowdown
Load Allocation
Chapter 4 Heat Pump and Chiller Optimizationp. 103
Heat Pump Thermodynamics
Refrigerants
Refrigerator Control
On-Off Control
Commercial Chillers
Larger Chillers
Economizer
Safety Interlocks
Cooling Costs
Load-Following
Cooling Towers
Controls
Interlocks
Evaporative Condensers
Tower Optimization
Supply Temperature Optimization
Return Temperature Optimization
Safety Controls
Flow Balancing
Winter Operation
Evaporator Optimization
Water Supply
Temperature Optimization
Water Return Temperature Optimization
Tower Supply Temperature Optimization
Tower Return Temperature Optimization
Heat Recovery Optimization
Optimized Operating Mode
Reconfiguration Optimization
Free Cooling
Plate and Frame Heat Transfer
Direct Free Cooling
Mode Reconfiguration
Optimized Storage
Load Allocation
Feedforward Control
Retrofit Optimization
Economizer Control
Water Distribution
Chapter 5 Environmental Controlsp. 133
Thermostatic Control
Two-position Control
Dual Thermostats
Setback Units
Heating-Cooling Thermostats
Limited Control
Zero Energy Band Control
Slave and Master Thermostats
Smart Thermostats
Pneumatic Units
Setpoints
Throttling Range
Thermostat Action
Sensitivity
Thermostat Design
Humidostat Design
Thermostat Accuracy
Temperature Sensors
Thermistors
Temperature Probes
Electronic Thermostats
Boiler Control
Temperature Equalization
Heater Humidifiers
Air Conditioner Humidity Controls
Controllers
Analog Controllers
Alarms and Output Limiting
Reset Windup
Input Signals
Setpoint Input
Displays
Control Modes
Electronic Temperature Controllers
Position Controllers
Nonlinear Controllers
Balancing
Servicing Features
Optical Meter Relays
Digital Controllers
Software
Temperature Regulators
Regulator Design
Thermal Actuators
Refrigerant Control
Chapter 6 Wireless Controlp. 163
Light-beam Control
Photovoltaic Cells
Photoresistors
Other Photosensitive Devices
Light-controlled Relays
Light-beam Transmitter
Light-beam Receivers
Infrared Transmitters
Infrared Receivers
Multifunction Infrared Transmitters
Multifunction Infrared Receivers
Chopped Light Control
Light-controlled Capacitance
Fiberoptics
Fiberoptic Conductors
Fiberoptic Transmitters
Fiberoptic Receivers
Fiberoptic Connectors
Fiberoptic Cable
Fiberoptic Networks
Fiberoptic Modems
PLC Modems
PLC Optical Systems
Carrier-current Control Systems
Carrier-current Signal Frequency
Tone Encoding
Filtering
Carrier-current Transmitters
Carrier-current Receivers
Tone Decoders
Tone Encoding Control
Filter Decoding
PLL Decoding
PLL Operation
Noise and Response Characteristics
Touch-tone Encoding
Radio Control
Low-power AM Transmitters
Radio Modems
Ethernet Radio Modems
Wireless Networks
Cells
Standalone Cells
Ethernet Cells
Overlapping Cells
Roaming
Interference Considerations
Chapter 7 Computer Controlp. 187
Programming
Input Signals
D/A Conversion
A/D Conversion
Ramp Type A/D Converters
Personal Computers
PC Control Evolution
PCs in Integration
Languages and Programming Techniques
Packaged Software
Programmable Logic Controllers
PLC Components
Inputs
Outputs
Central Processor Unit
Memory Unit
Programmer Units
Peripheral Devices
Graphic Control
Extensions to Ladder Logic
Indirect Addressing
Program Flow
Modular Programming
Communication with Devices
Graphic Languages
Soft Logic
System Design
IEC 1131-3 Structured Text Editor
Simulation
Communication and I/O
PLC Installation
PCs and PLCs
Control Evolution
Optimized Logic
PLCs Versus DCS
Smart Control
Control Software
PC-based Control for HVAC
PC-based Control Solutions
Engine Flexibility
Open Systems
Lon Works
HVAC System Renovation
BACnet
ControlNet
DeviceNet
CAN
Building Automation Trends
Open Systems Considerations
System Hardware
PCs as PLCs
Wonderware
Chapter 8 Building Automationp. 225
Distributed Control
Distributed Techniques
Sensor Location
Real-time Systems
Control Interfaces
PID Control
Oscillation and Proportional Band
Adding Integral Action
Derivative Action
Setting Up PID Control Loops
Self-tuning Loops
PC Hardware
Communications
Programming
Evolving Controls
Analog Control
Direct Digital Control
Distributed Process Control
Distributed Control Advantages
Reliability
Manual Stations and Analog Controllers
Reliability and Availability
DCS Configurations
Operator Interface
Video Display
Keyboards
Peripheral Devices
Display Formats
Detail Displays
Trend Displays
Software Configuration
Control Configuration
Algorithm Libraries
Input/Output
Communications
TOP Fieldbuses
Profibus
Profibus Variations
FIP-BUS
MODBUS
Rackbus
Foundation Fieldbus
Device Access
Dedicated Card Control
Local Multiplexers
Smart Transmitters
Building Automation Technology
Local Loop Control
Scheduled Start-Stop and Cycle Operation
Optimized Start-Stop
Duty Cycles
Demand Limiting
Day-Night Setback Control
Economizer Cooling
Enthalpy Changeover
Ventilation Control
Hot-Deck and Cold-Deck Temperature Control
Reheat Coil
Boiler Optimization
Chiller Optimization
Chiller Water Temperature
Condenser Water Temperature
Chiller Demand Control
Electrical Demand Measurements
Diagnostics
Industrial Intranets
Automation Networks
Seriplex
Addressing
Analog Signals
Noise Immunity
Overhead
Configuration
Interbus-S
System Data Flow
Scan Cycle
Network Implementation
PCP Protocol
Domains
Non-repetitive Traffic
Web Browsers
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