Air Conditioning Principles and Systems: An Energy Approach is a comprehensive book for undergraduate students of engineering. The book comprises of chapters on the scope and uses of air conditioning, physical principles, piping, valves, ducts, and insulation, fans and air distribution devices, centrifugal pumps, expansion tanks, venting, air conditioning systems and equipment refrigeration systems and equipment, and energy utilization and conservation. The book contains the latest and industry-wide accepted information on load calculations, design data, equipment information, and use of the Internet. This book is essential for consulting engineers, mechanical contractors, designers, project managers, and facilities managers. About Edward G. Pita Edward G. Pita is Professor in the Environmental Control Technology Department at New York City Technical College of the City University of New York. He completed his BS degree from Purdue University, an MS degree from Columbia University, and a PhD degree from the University of Maryland. He was chief mechanical engineer for a large consulting engineering firm for the United Nations and many other governmental and private clients.