Free download pdf book Refrigeration and Air Conditioning by R S Khurmi
Compressors , Psychrometry and Applications of Refrigeration and Air Conditioning have been included and updated for students to conceptualise the subject in a complete manner. The chapters consist of various exercises, examples, and multiple illustrations that aid in understanding the subject better. The subject of refrigeration and airconditioning is one of great significance as public focus shifts to food processing and preservation technologies. This highlights the need for professionals well-versed in the basics of this technology. A Textbook Of Refrigeration And Air Conditioning elaborates on the basics of this subject by including discussions on topics like multiple evaporator and compressor systems, simple and compound vapour compression refrigeration systems, air refrigeration cycles and systems, psychrometry, vapour absorption refrigeration and compressor systems, comfort conditions, psychrometry, refrigerants and compressors, cooling load estimation, steam jet refrigeration system, evaporators, condensers, expansion devices, and food preservation including cryogenics, fans, and ducts. A Textbook Of Refrigeration And Air Conditioning also features practical applications of refrigeration and air conditioning, thereby helping to buttress the theoretical knowledge already gleaned.
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For specific applications, efficiencies of both living and non-living beings depend to a great extent on the physical environment. The nature keeps conditions in the physical environment in the dynamic state ranging from one extreme to the other. Temperature, humidity, pressure and air motion are some of the important environment variables that at any location keep changing throughout the year. Adaptation to these many a times unpredictable variations is not possible and thus working efficiently is not feasible either for the living beings or the non-living ones. Thus for any specific purpose, control of the environment is essential. Refrigeration and air-conditioning is the subject which deals with the techniques to control the environments of the living and non-living subjects and thus provide them comforts to enable them to perform better and have longer lives. Objectives After studying this unit, you should be able to know what is refrigeration and air-conditioning, know the history of refrigeration, know applications of refrigeration and air-conditioning, and describe the term ton of refrigeration and COP.