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 Great Travels
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Heat Their Hotels: The manager of the hotel assured me that the riscaldamento (heat) was on, and his bill, presented to me the next day, proved it, for there, sure enough, was a charge of 150 lire per day for said heat. Fortunately, I was heading north to Switzerland, Germany and clear up to Sweden. In those countries they expect severe cold and they heat their hotels as thoroughly as we do, so I was destined soon to get warm.
Hotels are generally grouped in four main categories: commercial or transient hotels; resort hotels; residential hotels; and motels, or motor hotels. In the United States about 75% of the hotel rooms (excluding motels) are in commercial hotels, 16% in resort hotels (both summer and winter seasons), and the remaining 9% in residential hotels. About 80% of the American motel rooms are in commercial establishments and the remainder in resort motels.
HEAT EXCHANGER, a device for transferring heat from one body or medium to another. Heat exchangers have many uses, as condensers, evaporators, radiators, polymerizers, and in petroleum-fractionating towers.
In the commonest type of heat exchanger, heat is transferred from one fluid to another through a solid, usually a metal of high heat conductivity, to prevent the fluids from mixing.
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