Air cooled vacuum steam condensers (ACC’s) are used to condense exhaust steam from turbines in a closed cycle. They are mostly used in power plants (Waste Incineration Plants and Combined Cycle Plants). Axial flow fans located below heat exchanger bundles; sloped in an A-frame structure; force a stream of ambient cooling air through the system. In so doing, heat from the condensing steam is rejected to the environment via the finned tubes. Steam flows down across the bundles. Condensates are recovered inside a manifold connected to a hot water tank. Non condensable goes up in a counter flow current through a secondary condenser part (dephlegmators) for final condensation.
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