Which crucial component did James Watt add to the steam engine to drastically reduce its fuel consumption?
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In 1765, James Watt realized that constantly heating and cooling the main cylinder wasted huge amounts of energy. By adding a separate condenser, the main cylinder could remain hot while the steam was cooled elsewhere. This single modification reduced fuel use by more than 60 percent, transforming the steam engine from a specialized mining pump into a versatile power source for factories. Photo: Nicolás Pérez, Wikimedia Commons, CC BY-SA 3.0.
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Source: Wikipedia (CC BY-SA)
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