HVAC Chillers - (second edition)
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HVAC chillers are complex systems that combine thermodynamics, heat transfer, fluid mechanics, controls, and mechanical engineering. Understanding how these systems operate, how they are designed, and how they can be optimized is essential for engineers, technicians, and facility managers responsible for building performance.
This book was written to provide a practical and structured understanding of HVAC chillers. It explores the fundamental principles of refrigeration, explains different types of chillers, and describes how chilled water systems are designed and operated. In addition, the book addresses important topics such as energy efficiency, plant optimization, system controls, and maintenance strategies that help ensure reliable and efficient operation.
Modern cooling systems are increasingly influenced by sustainability goals, stricter environmental regulations, and the need for higher operational efficiency. As a result, chiller technology is evolving rapidly, with innovations such as variable speed compressors, magnetic bearing systems, advanced controls, and low-GWP refrigerants shaping the future of cooling.
This book aims to bridge theory and practice. It is designed not only to explain how chillers work, but also to provide insights that professionals can apply in real-world HVAC projects.
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Charles Nehme is an HVAC and building services professional with more than 30 years of international experience in mechanical engineering and building systems. His work spans a wide range of applications including commercial buildings, industrial facilities, hospitals, laboratories, cleanrooms, data centers, hotels, and residential developments.
Through his firm CFN-HVAC, Charles provides engineering consulting, system optimization, energy efficiency analysis, design review, and technical support for HVAC and building services projects worldwide. His expertise includes chilled water systems, energy management, building automation systems, and advanced HVAC design strategies.
Charles is also a prolific technical author who has written hundreds of engineering books and guides focused on HVAC, energy systems, building services engineering, and emerging technologies. His goal is to make complex engineering topics accessible and practical for professionals, students, and organizations seeking reliable technical knowledge.
In addition to consulting and writing, he supports companies through technical marketing, knowledge development, and engineering education related to HVAC systems and building technologies.
