Chiller, Boiler, And Distribution System Control Applications - Honeywell AUTOMATIC CONTROL Engineering Manual

CHILLER, BOILER, AND DISTRIBUTION SYSTEM CONTROL APPLICATIONS

Introduction
Abbreviations
Definitions
S y m b o l s
Chiller System Contr ol
Control Applications
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Introduction .......................................................................................... 299
Vapor-Compression Refrigeration ....................................................... 299
Vapor-Compression Cycle .............................................................. 299
Centrifugal Compressor .................................................................. 300
Reciprocating Compressor ............................................................. 301
Screw Compressor ......................................................................... 301
Absorption Refrigeration ...................................................................... 301
Absorption Cycle ............................................................................. 301
Absorption Chiller ............................................................................ 302
Chiller Control Requirements .............................................................. 303
Basic Chiller Control ....................................................................... 303
System Controls Which Influence The Chiller ................................. 303
Safety Controls ............................................................................... 303
Chiller/BMCS Interface ................................................................... 303
Chilled Water Systems ........................................................................ 304
Central Cooling Plants .................................................................... 304
Single Centrifugal Chiller Control .................................................... 304
Single Centrifugal Chiller Control Application ...................................... 305
Multiple Chiller System Control Applications ....................................... 308
Dual Centrifugal Chillers Control Application .................................. 309
Similar Multiple Centrifugal Chillers Control Applications ............... 311
Equal Sized Centrifugal Chillers Control .................................... 311
Multiple Centrifugal Chiller Sequencing ...................................... 313
Dissimilar Multiple Centrifugal Chillers Control ................................... 315
Alternative Multiple Decoupled Chiller Control .................................... 315
Combination Absorption And
Centrifugal Chiller System Control .................................................. 315
Chiller Pump Optimization ................................................................... 316
Thermal Storage Control ..................................................................... 317
General ........................................................................................... 317
Control Modes ................................................................................. 317
293
Chiller, Boiler and
Distribution System
ENGINEERING MANUAL OF AUTOMATIC CONTROL
Contents