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Firebox (steam engine)
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<p>In a <a href="/facts/Steam_engine/f7hN8vzm">steam engine</a>, the firebox is the area where the <a href="/facts/Fuel/H8DIRL1j">fuel</a> is burned, producing heat to boil the water in the <a href="/facts/Boiler/uPqTq0I6">boiler</a>. Most are somewhat box-shaped, hence the name. The hot gases generated in the firebox are pulled through a rack of tubes running through the boiler. </p>