RAC Lecture 1 - Lesson 1 History Of Refrigeration 1 Version...

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Lesson 1 History Of Refrigeration Version 1 ME, IIT Kharagpur 1
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Objectives of the lesson: The objectives of this lesson are to: 1. Define refrigeration and air conditioning (Section 1.1) 2. Introduce aspects of various natural refrigeration methods, namely: a. Use of ice transported from colder regions (Section 1.2) b. Use of ice harvested in winter and stored in ice houses (Section 1.2) c. Use of ice produced by nocturnal cooling (Section 1.2.1) d. Use of evaporative cooling (Section 1.2.2) e. Cooling by salt solutions (Section 1.2.3) 3. Introduce historical aspects of various artificial refrigeration methods, namely: a. Vapour compression refrigeration systems, including i. Domestic refrigeration systems (Section 1.3.1.1) ii. Air conditioning systems (Section 1.3.1.2) b. Vapour absorption refrigeration systems (Section 1.3.2) c. Solar energy based refrigeration systems (Section 1.3.3) d. Air cycle refrigeration systems (Section 1.3.4) e. Steam and vapor jet refrigeration systems (Section 1.3.5) f. Thermoelectric refrigeration systems (Section 1.3.6) , and g. Vortex tubes (Section 1.3.7) At the end of the lesson the student should be able to: 1. Identify various natural and artificial methods of refrigeration 2. List salient points of various refrigeration techniques, and 3. Name important landmarks in the history of refrigeration 1.1. Introduction Refrigeration may be defined as the process of achieving and maintaining a temperature below that of the surroundings, the aim being to cool some product or space to the required temperature. One of the most important applications of refrigeration has been the preservation of perishable food products by storing them at low temperatures. Refrigeration systems are also used extensively for providing thermal comfort to human beings by means of air conditioning. Air Conditioning refers to the treatment of air so as to simultaneously control its temperature, moisture content, cleanliness, odour and circulation, as required by occupants, a process, or products in the space. The subject of refrigeration and air conditioning has evolved out of human need for food and comfort, and its history dates back to centuries. The history of refrigeration is very interesting since every aspect of it, the availability of refrigerants , the prime movers and the developments in compressors and the methods of refrigeration all are a part of it. The French scientist Roger Th Ý venot has written an excellent book on the history of refrigeration throughout the world. Here we present only a Version 1 ME, IIT Kharagpur 2
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brief history of the subject with special mention of the pioneers in the field and some important events. Q: Which of the following can be called as a refrigeration process? a) Cooling of hot ingot from 1000
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This note was uploaded on 12/04/2010 for the course ME N/A taught by Professor N/a during the Spring '10 term at Indian Institute of Technology, Kharagpur.

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RAC Lecture 1 - Lesson 1 History Of Refrigeration 1 Version...

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