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cleanse the air; After several more years of refinement and field testing, on January 2, 1906, Carrier was granted U.S. patent 808,897 for an Apparatus for Treating Air, the world's first spray-type air conditioning equipment. It was designed to humidify or dehumidify air, heating water for the first function and cooling it for the second.
At the time, gas central heating had yet to be developed, so people relied on burning coal or wood as their main source of heating. [8] [9]Parker felt that the fireplace was not enough to keep her and her home warm during the cold New Jersey winter, and designed the first gas furnace that was powered by natural gas and the first heating system to contain individually controlled air ducts that ...
Freon is an odorless, colorless, nonflammable, and noncorrosive chlorofluorocarbon and hydrochlorofluorocarbon refrigerant, which is used in air conditioning, refrigeration and some automatic fire-fighting systems. Refrigerators from the late 19th century until 1929 used toxic gases, ammonia, methyl chloride, and sulfur dioxide as refrigerants.
But, the 1920s also marked the beginning of an industrial shift for the sheet metal trade when Willis Carrier sold his invention for air-conditioning to movie-theater operators in 1922. By 1925 the system was cooling New York City 's Rivoli Theater , and within a few years air conditioners were being installed in restaurants, railroad cars, and ...
In 1920s, the idea of solar heating began in Europe. ... most of the energy is used for heating, ventilation and air conditioning systems. ... heating cost for ...
In 1936, Kelvinator introduced the "Kelvin Home", one of the earliest attempts to market in-home central air conditioning and heating to ordinary consumers. Customers could choose from several different home designs, all of which were equipped with climate control systems and the latest electric appliances, and were advertised to cost about ...
In some areas electrical resistance heating is used, especially where the cost of electricity is low or the primary purpose is for air conditioning. Modern high-efficiency furnaces can be up to 98% efficient and operate without a chimney, with a typical gas furnace being about 80% efficient. [1]
Window and central air conditioning in the 1960s caused many companies to discontinue production of fans, [12] but in the mid-1970s, with an increasing awareness of the cost of electricity and the amount of energy used to heat and cool homes, turn-of-the-century styled ceiling fans became popular again as both decorative and energy-efficient.