Since the publication of the first edition in 1992, the HVAC industry has gone through enormous changes. As simple digital systems have given way to more complex systems, demand for information on how these systems operate, how they are best applied and how they communicate with other building control systems has grown rapidly. Direct Digital Control for Building Systems, Second Edition is thoroughly updated and expanded to include coverage of the architecture of modern digital control systems, distributed intelligence networked systems, communication protocols, the technologies and issues concerning interoperability, the latest application strategies, and defensive techniques for designing and specifying control systems. Numerous illustrations throughout help keep the subject highly accessible, and hardware, software, and systems applications are described in the most universal terms possible.
This thoroughly revised second edition also contains a full section on BACnet® standard and Echelon's LonWorks® technology; their meaning, applications, and future implications. An up-to-date appendix is provided. Insights on emerging technologies in intelligent control systems and what the future holds for this dynamic field is covered throughout.
Auflage
Sprache
Verlagsort
Zielgruppe
Für Beruf und Forschung
Research
Editions-Typ
Illustrationen
Maße
Höhe: 241 mm
Breite: 160 mm
Dicke: 18 mm
Gewicht
ISBN-13
978-0-412-14531-5 (9780412145315)
DOI
10.1007/978-1-4615-4921-5
Schweitzer Klassifikation
1 ? Introduction to Direct Digital Control Systems.- Definition of Direct Digital Control.- Direct Digital Control versus Conventional Control.- Impact of Digital Controls on the Building Industry.- History of Electronic Controls.- Development of Digital Control Systems.- Recent Developments in Direct Digital Control.- Acceptance of Digital Controls.- Future of Direct Digital Controls.- 2 ? Fundamentals of Control Systems.- Terminology.- Control System Performance.- Control System Energy Sources.- Control System Elements.- 3 ? Fundamentals of Computer-Based Controls.- Microcomputer Fundamentals.- Organization of Computer-Based Control Systems.- Computer Communications Systems.- Elements of a Direct Digital Controller.- Direct Digital Control System Programming.- 4 ? Interfacing Digital Controllers with Conventional Control Devices.- Input Functions.- Output Functions.- Interconnecting Media.- 5 ? Interoperable Control Systems.- Control System Interoperability.- BACnet.- Echelon.- 6 ? Direct Digital Control Application Strategies.- Local Control Strategies.- Direct Digital Control of Central Plant Systems.- Variable Pumping Strategies for Chilled-Water Systems.- Direct Digital Control of Air Handling Systems.- Monitoring Strategies for Building Management.- Supervisory Control Strategies.- 7 ? Designing Direct Digital Control Systems.- Criteria for Evaluating System Needs.- Control System Design Considerations.- Evaluating Control Loops.- Evaluating Design Alternatives.- System Design Methodology.- 8 ? Specifying Direct Digital Control Systems.- System Architecture and Product Evaluation.- Acceptable Manufacturers.- Specifications.- Project Funding.- Operator Training and Support.- System Maintenance.- Additional Operation and Maintenance Considerations.-System Commissioning.- Specify to Avoid Hazards.- 9 ? Economic Analysis of Direct Digital Control Systems.- Economic Analysis of Energy Saving Strategies.- Estimating Installed Cost of Direct Digital Control Systems.- 10 ? Emerging Technologies in Direct Digital Control.- Nonhierarchical Systems.- Pattern Recognition Adaptive Control ("PRAC").- Appendix I.- Spreadsheet Template for Motor Energy Savings Using Variable-Frequency Drives.- Appendix II.- Direct Digital Control System Manufacturers.
