"Refrigeration Technology" introduces the fundamentals of refrigeration technology, the development of the technology in the past 20 years and the current status. The book is divided into 4 parts containing 13 chapters. The first part includes the introduction of the category, applications, history and development of refrigeration and the academic organizations and journals in this field. The second part of the book covers the fundamental aspects of refrigeration technologies, various methods of decreasing temperature, thermodynamic analyses of refrigeration cycles, the gas refrigeration systems and mechanically or thermally driven vapour compression refrigeration systems. The third part discusses the working substances of refrigeration including the requirements for refrigeration systems and their properties. This part also discusses some environmental issues relating to the refrigeration systems such as the mechanism and degree of ozone layer depletion and greenhouse effect. This part ends with a discussion of properties of moist air for air-conditioning. The fourth part focuses on the components and equipment such as compressors, condensers and evaporators in refrigeration systems. This book will be useful for both university students and the professionals working in the field of refrigeration.