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The heating radiator was invented by Franz San Galli in 1855, a Kingdom of Prussia-born Russian businessman living in St. Petersburg. [2] [3] In the late 1800s, companies, such as the American Radiator Company, promoted cast iron radiators over previous fabricated steel designs in order to lower costs and expand the market.
A cast iron convector radiator from 1904. Heat transfer from a radiator occurs by two mechanisms: thermal radiation and convection into flowing air or liquid. Conduction is not normally a major source of heat transfer in radiators. A radiator may even transfer heat by phase change, for example, drying a pair of socks. In practice, the term ...
In 1894, Mr. Woolley convinced the other officers of the company to pay his way to Europe, whereupon he booked the sale of $50,000 worth of cast iron radiators for the Swiss capitol. [6] This was the start of the company's entry into the European market. By the following year, the company had established a branch in London, England. [6]
In a steam heating system, each room is equipped with a radiator which is connected to a source of low-pressure steam (a boiler). Steam entering the radiator condenses and gives up its latent heat, returning to liquid water. The radiator in turn heats the air of the room, and provides some direct radiant heat. The condensate water returns to ...
Despite its name, a radiator does not primarily heat a room by radiation. If positioned correctly a radiator will create an air convection current in the room, which will provide the main heat transfer mechanism. It is generally agreed that for the best results a steam radiator should be no more than one to two inches (2.5 to 5cm) from a wall.
"Lodge's cast iron pans are literally the best pans I have ever used in my life," gushed a final fan. "My absolute go-to every time I need to cook something. Perfect sear on steaks. ...
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