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The basic operation of a thermoelectric power station is quite simple: burning fuel to release heat that transforms water from a liquid state into steam. The steam is then responsible for driving a turbine activating the machine that generates electric power. However, the aspects involved in electric power production in the old Tejo Power Station weren’t that simple because, among other things, a large and complex internal air and water system was required, as well as treating fossil fuels, which in the old power station’s case was coal. == Coal == Boats loaded with coal coming in the most part from Great Britain arrived along the Tagus River and docked at the power station. Using narrow planks connecting the boats to the dock, workers would unload the coal, placing it in several piles in ''Praça do Carvão'' (Coal Square). It was here that the Tejo Power Station’s entire electricity production process began. Transporting coal to the boilers’ feed system was performed manually by pushing trolleys from the coal piles to the sieve and crusher. Afterwards it was placed in bucket elevators which raised it to the mixing silos that stored the various types of coal, creating a balanced mixture for good combustion in the boiler. Once mixed, the coal would continue up on another system of bucket elevators to the coal distribution conveyor belt that ran along the top of the boiler building. From this conveyor, the coal would fall into the loaders and from there was directed through downspouts to the rotating grate conveyor inside the boiler, where it burned slowly, producing a temperature inside the boiler of approximately 1200°C. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tejo Power Station operations」の詳細全文を読む スポンサード リンク
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