Control Systems for Heating, Ventilating and Air Conditioning, Sixth
Edition contains a comprehensive treatment of heating and air
conditioning system controls. This book was originally written to
provide fundamentals of HVAC control to practitioners who were designing
new control systems or maintaining existing control systems. Emphasis on
fundamental control system principles along with the psychrometrics of
air conditioning processes has remained a focus of the new edition.
While control system technology has changed drastically over the years,
the fundamentals of controlling heating and air conditioning systems
have changed only modestly.
Readers will find that fundamentals of existing control systems remain
in this book so that those who need to maintain or troubleshoot systems
that are twenty or thirty years old will be able to see what
practitioners did during that time frame. In addition the ubiquitous
application of digital control technology in very recent times is also
described. Note that the fundamental control principles once implemented
pneumatically are now being implemented in modern digital computers -
software now replaces hardware. Another change since the last addition
is a new emphasis on controlling minimum fresh air for validation
purposes. New techniques for doing this have been developed in response
to ASHRAE Standard 62, "Ventilation for Acceptable Indoor Air Quality,"
and these methods are included.
Control Systems for Heating, Ventilating and Air Conditioning, Sixth
Edition is complete and covers both hardware control systems and
modern control technology. The material is presented without bias and
without prejudice toward particular hardware or software. Readers with
an engineering degree will be reminded of the psychrometric processes
associated with heating and air conditioning as they learn of the
various controls schemes used in the variety of heating and air
conditioning system types they will encountered in the field.
Maintenance technicians will also find the book useful because it
describes various control hardware and control strategies that were used
in the past and are prevalent in most existing heating and air
conditioning systems.
Designers of new systems will find the fundamentals described in this
book to be a useful starting point, and they will also benefit from
descriptions of new digital technologies and energy management systems.
This technology is found in modern building HVAC system designs.
