A condensing steam locomotive differs from the usual closed cycle condensing steam engine, in that the function of the condenser is primarily either to recover water, or to avoid excessive emissions to the atmosphere, rather than maintaining a vacuum to improve both efficiency and power. It takes the form of a series of pipes, valves and other ancillary equipment usually attached to an otherwise conventional steam locomotive. The apparatus takes the exhaust steam that would normally be lost up the chimney and routes it through a heat exchanger, into the normal water tanks. Installations vary depending on the purpose, design and the type of locomotive to which it is fitted.
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“Clean the spittoons.
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And the slime in hotel spittoons:
Part of my life.”
—Langston Hughes (1902–1967)
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—Mary Wollstonecraft (1759–1797)