Refrigeration and Air Conditioning

Objectives of the lesson: 1. Define refrigeration and air conditioning 2. Introduce aspects of various natural refrigeration methods, namely: Use of ice transported from colder regions Use of ice harvested in winter and stored in ice houses Use of evaporative cooling 3. Introduce historical aspects of various artificial refrigeration methods, namely: Vapour compression refrigeration systems, including Domestic refrigeration systems Air conditioning systems Vapour absorption refrigeration systems 4. Applications of refrigeration in: Food processing, preservation and distribution Chemical and process industries Comfort air-conditioning 5. Applications of air conditioning, namely: o Industrial, such as in textiles, printing, manufacturing, photographic, computer rooms, power plants, vehicular etc. o Comfort – commercial, residential etc. At the end of the lesson the student should be able to: Identify various natural and artificial methods of refrigeration