Direct Digital Control for Building HVAC Systems [Hardcover]

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.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 Communl³/