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2. Kang bed-stove - Wikipedia

   en.wikipedia.org/wiki/Kang_bed-stove

   Kang. bed-stove. The kang (Chinese: 炕; pinyin: kàng; Manchu: nahan, Kazakh: кән) is a traditional heated platform, 2 metres or more long, used for general living, working, entertaining and sleeping in the northern part of China, where the winter climate is cold. It is made of bricks or other forms of fired clay and more recently of ...

3. Reverberatory furnace - Wikipedia

   en.wikipedia.org/wiki/Reverberatory_furnace

   Reverberatory furnaces (in this context, usually called air furnaces) were formerly also used for melting brass, bronze, and pig iron for foundry work. They were also, for the first 75 years of the 20th century, the dominant smelting furnace used in copper production, treating either roasted calcine or raw copper sulfide concentrate. [ 1 ]

4. Induction furnace - Wikipedia

   en.wikipedia.org/wiki/Induction_furnace

   An induction furnace is an electrical furnace in which the heat is applied by induction heating of metal. [1][2][3] Induction furnace capacities range from less than one kilogram to one hundred tons, and are used to melt iron and steel, copper, aluminum, and precious metals. The advantage of the induction furnace is a clean, energy-efficient ...

5. Bed frame - Wikipedia

   en.wikipedia.org/wiki/Bed_frame

   Bed frame. A bed frame[1] or bedstead[2] is the part of a bed used to position the bed base, the flat part which in turn directly supports the mattress (es). The frame may also stop the mattress from sliding sideways, and it may include means of supporting a canopy above. There are several types of Bed Frames [3] found around the globe.

6. Open-hearth furnace - Wikipedia

   en.wikipedia.org/wiki/Open-hearth_furnace

   Open-hearth furnace. An open-hearth furnace or open hearth furnace is any of several kinds of industrial furnace in which excess carbon and other impurities are burnt out of pig iron to produce steel. [1] Because steel is difficult to manufacture owing to its high melting point, normal fuels and furnaces were insufficient for mass production of ...

7. Furnace (central heating) - Wikipedia

   en.wikipedia.org/wiki/Furnace_(central_heating)

   Furnace (central heating) A furnace (American English), referred to as a heater or boiler in British English, is an appliance used to generate heat for all or part of a building. Furnaces are mostly used as a major component of a central heating system. Furnaces are permanently installed to provide heat to an interior space through intermediary ...