HVAC also refers to an applied discipline, which has a wide influence on architectural design, engineering and manufacturing in the world. Every country has HVAC associations, and the HVAC Branch of China Architectural Society is the official representative organization of China. Heat transfer, engineering thermodynamics and fluid mechanics are its basic theoretical basis, and its research and development direction is to provide more comfortable working and living environment for human beings.
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/kloc-More than 0/000 years ago, Persia invented an ancient air conditioning system, which used a wind pole installed on the roof to blow cold water into the room from the outside, making people feel cool indoors.
/kloc-in the 9th century, Michael Faraday, a British scientist and inventor, discovered that compressing and liquefying a certain gas could freeze the air. This phenomenon appeared when liquid ammonia evaporated, and his idea was still theoretical at that time.
1842, John Gorrie, a doctor in Florida, USA, used compression technology to make ice cubes and blew them as frozen air to malaria and yellow fever patients. He thought of using his ice machine to manage the environment of the building and conceived a central air conditioning system that could cool the whole city. Gori obtained the American patent (#8080) of its ice maker at 185 1.
This technology was attacked by some businessmen and religious leaders in the north because it threatened the business of transporting ice cubes from the north to the south for sale. 1855 When Gori and his business partner died, the idea of air conditioning disappeared.