E-grāmata: Practical Controls: A Guide To Mechanical Systems

Forward, Introduction, Mechanical Systems, Controls and Control Systems; Mechanical Systems and Equipment Overview; Airside Systems and Equipment; Waterside Systems and Equipment; Miscellaneous Systems and Equipment; Introduction to Controls: Methods of Control; Control Methods; Two-Position Control; Staged Control; Proportional Control; P+I and PID Control; Floating Control; Sensors and Controllers; Sensors; Controllers: A General Description; Single-stage or Two-position Controllers; Multistage Controllers and Thermostats; Proportional and Floating Controllers; DDC Controllers; Safety Devices; End Devices; Relays and Contactors; Starters; Dampers and Actuators; Control Valves; Variable Frequency Drives; Common Control Schemes; Reset; Night Setback and Morning Warm-up; Economizer Operation; 1/3, 2/3 Control of Steam; Face/Bypass Damper Control; Dehumidification; Primary/Backup Operation; Lead/Lag Operation; Intermission; Rooftop Units; Single Zone Systems; Reheat Systems; RTU Zoning Systems; VAV Systems; Make-up Air Units; Packaged Make-up Air Units; 100 Percent Outside Air; Packaged Make-up Air Units; Return Air Capabilities; Built Up Make-up Air Units with Electric Heating; Built Up Make-up Air Units with Steam Heating; Make-up Air Units Addition of Cooling; Fan Coil Units; Staged Control of Both Heating and Cooling; Staged Heating and Proportional Cooling; (or Vice Versa); Proportional Heating and Cooling; Dual-Temp or Two-Pipe Systems; Built Up Air Handling Units; Basic Components; Common Controls; Formulas and Analysis Too Single Zone Systems; Reheat Systems; VAV Systems; Typical Sequences of Operation; Ventilation Strategies; RTU Zoning Systems and; Stand-alone Zone Dampers; System Components; Operational Characteristics; Typical RTZ System Sequence of Operation; Stand-alone Zone Dampers; VAV and Fan Powered Boxes; Types of VAV and Fan Powered Boxes; Cooling-only VAV Boxes; VAV Boxes With Electric Reheat; VAV Boxes With Hot Water Reheat; Fan Powered Boxes With Electric or Hot Water Heat ..; Constant Volume Terminal Units; Typical Sequences of Operation; Reheat Coils; Electric Reheat Coils; Hot Water and Steam Reheat Coils; Exhaust Fans and Systems; Manually Controlled Exhaust; Interlocked Exhaust; Time-of-Day Controlled Exhaust; Temperature and Pressure Controlled Exhaust; Pumps and Pumping Systems; Single Pump Systems; Two and Three Pump Systems; Variable Frequency Drive Pumping Systems; Primary/Secondary Pumping Systems; System Bypass Control; Boilers; Hot Water Boilers Single Boiler Systems; Hot Water Boilers; Systems with Multiple Boilers; Steam Boilers Single and Multiple Boiler Systems; Combustion Air; Chillers; Air Cooled Chillers; Split System Chillers; Water Cooled Chillers; Multiple Chiller Systems; Refrigerant Monitoring/Ventilation Systems; Heat Exchangers; Steam-to-Water Heat Exchangers; Water-to-Water Heat Exchangers; Humidifiers; Steam-utilizing Humidifiers; Steam-generating Humidifiers; Unitary Heating Equipment; Unit Heaters; Cabinet Unit Heaters and Wall Heaters; Baseboard Heaters; Computer Room A/C Systems; Air Cooled Systems; Tower Water Systems; Glycol Cooled Systems; Water Cooled Systems; Water Cooled Equipment; Condenser Water Systems; Conclusion; Appendices: Formulas, Control Symbols Abbreviations, Glossary