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Direct Dry Condensing: Air Cooled Vacuum Steam Condensers

Air Cooled Vacuum Steam Condensers (= ACC) are designed to condense exhaust steam from turbines with pressure below 0.300 gauge bar. Heat exchange surface is an assembly of finned tubes, fed by an inlet steam duct and manifold, condensates are drained down into bonnet header boxes. Finned tube bundles are sloped in a A frame structure, they are blown by fans and drivers electrically driven.

Large project management capacity

Because of its experienced staff and its capacity to handle more than 250 different designs per year, GEA Batignolles Technologies Thermiques has delivered the largest projects developed worldwide like Oxygen units for GTL plants. The in-house design team handles definition of vacuum groups, condensate recovery systems and piping works. Structure, steam ducts and manifolds are calculates to comply with site conditions. Our construction dept does supervision of construction and commissioning on site.

Multiple row concept

GEA Batignolles Technologies Thermiques prime design for Vacuum Air Cooled Condensers is based on MASH© concept. Steam is brought to the condenser via steam duct and a manifold. Steam flows down across 2 or 3 rows of finned tubes. Condensates are recovered inside bonnet header boxers connected to a hot water tank. Non condensable goes up through a deflegmation row for final condensation.

Single row concept

GEA Batignolles Technologies Thermiques alternative design is based on single row concept : ALEX©. Steam flows down across 1 row of finned tubes whose section is almost rectangular. Non condensables go up through deflegmator bundles for final condensation. Advantage is noise power and pressure drop air side.

PID and Auxiliaries

Basic and detailed engineering for auxiliary equipments are carried out under 1 roof by a dedicated team using the latest tools to offer a complete performance guarantee.

Structure design

From general arrangement drawing, we are able to generate a 3D model in order to perform calculation using Staad-pro© software. This model is then exported to X-steel© software to produce all detail and shop drawings.