7.15 Air Conditioning Machine
It is found that proper working and living conditions of human being necessitates certain criteria such as temperature, moisture content, clearness and circulation of air should be conducive to human health and comfort. The technique by which this is done is known as air conditioning. Air should be free from any type of impurity such as gaseous material, tobacco and bad odour. All these factors increase the efficiency of people working in offices and factories; this is also used to create ideal conditions necessary for producing and processing of certain goods. American Society of Heating and Ventilating Engineers have recommended the following data for average comfort conditions:
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Temperature—17° to 22°C in winter ...
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