Diseases, Conditions, Syndromes

France to order air-conditioned shops to keep doors shut

Air-conditioned shops in France will be ordered to keep their doors closed or risk being fined, a minister said Sunday announcing an upcoming rule to combat energy wastage.

Health

Q&A: Safety tips for summer activities

DEAR MAYO CLINIC: I love to be outdoors. I enjoy running, hiking and swimming. Often in the summer, I take my family camping, and we go kayaking, canoeing and do other activities. With the temperatures anticipated to be above ...

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Air conditioning

Air conditioning refers to the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation or disinfection that modifies the condition of air. An air conditioner (often referred to as AC or air con.) is an appliance, system, or mechanism designed to stabilise the air temperature and humidity within an area (used for cooling as well as heating depending on the air properties at a given time), typically using a refrigeration cycle but sometimes using evaporation, most commonly for comfort cooling in most buildings and motor-cars.

The concept of air conditioning is known to have been applied in Ancient Rome, where aqueduct water was circulated through the walls of certain houses to cool them. Similar techniques in medieval Persia involved the use of cisterns and wind towers to cool buildings during the hot season. Modern air conditioning emerged from advances in chemistry during the 19th century, and the first large-scale electrical air conditioning was invented and used in 1902 by Willis Haviland Carrier.

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