Direct Dry Condenser Cooling (ACC) consists mainly of following subsystems:
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Steam Condensation System
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Air Evacuation System
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HEX Tube Cleaning System
The steam expanding in the steam turbine increases in specific volume
as it passes through the stages, exhausting about 1000 times the inlet
volume. Meanwhile, the exhaust steam energy has dropped down to such a
level that further economical use of it is not possible anymore. In order
to break the cycle, the condensation heat in the exhaust steam has to be
discharged via condenser to fluidize the cycle media.
The condenser therefore plays a crucial role, serving as the water/steam
cycle as the main heat sink and allows for a closed system configuration.
Like the steam boiler, the condenser serves as a separating interface between
gaseous and fluidic phase in the water/steam cycle.
Function
The cooling air flowing through the tube bundles extracts the vaporized
heat of the exhaust steam guided through the exhaust steam duct and distribution
system to the condenser tube bundles. From the steam distribution duct
at the top of the A-type condenser modules the steam passes first through
the parallel flow tube bundles where partial condensation is achieved (approx.
80%). The condensate forms drains, parallel to the direction of the steam
at the bottom of the tube bundled into the condensate collector.
Salient features of the ACC equipment:
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High efficiency and reliability
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Low energy consumption in all conditions
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Low vibration of air moving system
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Robust and simple design
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All welded design (except manholes, inspection holes etc.)
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Maximized shop pre-assembly, inspection and testing
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Fast erection and commissioning
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Safe and economic operation
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Easy maintenance
A-Frame Direct Air Cooled Condenser
Modularized A-Frame design is the most prominent Air Cooled Condenser
among power plants of all size and capacity. The integral features of our
Air Cooled Condenser are long term mechanical and thermal integrity, excellent
resistance against corrosion and freezing, reliable operation, low maintenance
and minimum power consuming fan.
The Fin tube is the core technology of the Air Cooled Condenser, and is
available in three basic classes:
Single Row Condenser (SRC®) elongated, flat tube with brazed aluminium
fins:
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Rectangular/ Oval Carbon Steel tubes with Al fins
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Has larger heat transfer area per bundle
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Makes design of ACC more compact
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Used for higher rating plants 150 MW for techno-commercial reasons
Multi Row Galvanized (MRG), oval tube with hot dip galvanized steel fins:
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Larger heat transfer area on both tube and fin side
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Lifespan of more than 30 years
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Cleaning with high pressure water jet up to 120 bar
Multi Row Condenser (MRC)
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Round tube with aluminium fins – oval tube with hot-dip galvanized
steel fins
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Circular Carbon Steel tubes with Al fins
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G’,’L’ type fins
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Provision for use of alternate tube/fin materials such as Copper, SS and
Brass
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3 or 4 Tube row design
Project Details (Design/Engineering/Supply/E&S)
Energo has exclusive tie-ups with prestigious clients to provide the best
cooling solutions to Power and process industries. Following are a few
of our business associates around the globe:
Direct Dry Condenser Cooling
We extend our Dry Condenser Cooling service to our clients in:
Europe
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Damhead Creek (UK) - 700 MW power station
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Corby (UK) - 650 MW PowerStation
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Monterrey (MEX) - 2 x 300 MW power stations produced by ABB
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Shotton (UK) - 300 MW Coal Fired TPP
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Rye House (UK) - 100 cell Air Cooled Condenser for a 750 MW CCPP
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Enfield (UK) - 25 cell Air Cooled Condenser for a 400 MW CCPP
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Elean (UK) - 35 MW Coal Fired TPP
China
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Tianfu Power station - 2 x 330 MW , Client CHEC
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Shahe Power station - 600 MWE, client Shuangliang Company
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Beiyuan Power station - 2 x 125 MWE, client Shuangliang Company
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Shahe Power station - 4 x 150 MWE, client Shuangliang Company
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Taiyuan Coke Oven Project - Client Shangxi Cooling Systems