Hamon Cooling Information Towers

Hamon
Information
Cooling
Towers
24 AUGUST 2009
HAMON THERMAL GERMANY:
COMMISSIONED BY VATTENFALL WITH PLUME ABATED FAN
ASSISTED NATURAL DRAFT COOLING TOWER FOR NEW POWER
PLANT MOORBURG
Vattenfall
The Vattenfall Europe Generation AG has commissioned Hamon Thermal Germany with the
construction of a Plume Abated Fan assisted Natural Draft Cooling Tower (PAFAND) for the (1,537
MW) hard coal power plant at Moorburg, supplying roughly 85% of Hamburg’s electricity and 40%
of its district heating needs.
This combination of wet and dry cooling tower ensures on the one hand, the efficiency and constant
temperature level of warm and cold water of a wet cooling tower and on the other hand prevents, to a
FOR MORE INFORMATION,
CONTACT HAMON THERMAL EUROPE
Phone: +32.10.39.05.00 – Fax +32.10.39.05.01
Info.hteb@hamon.com
www.hamon.com
Rue Emile Francqui 2
B-1435 Mont-St-Guibert, Belgium
.
Hamon
Information
Cooling
Towers
very large degree, the formation of visible plume by the mixture of the warmed-up air of the dry part
with the saturated plume forming air from the wet part.
The mixed discharge air of the PAFAND cooling tower, which is warmed-up over the dew point in
this way, leaves the outlet air almost invisible (no visible plume for the vast majority of the
operational period).
Due to the necessary integration of the Hybrid unit into the components of the power plant at a stage
when the planning was nearly complete, the local conditions meant that there is restricted room for the
cooling tower and severe noise protection requirements. Both of these restrictions posed a big
challenge to the procedural design, which has been solved by accompanying air flow trials in the wind
tunnel and fluid-dynamic software simulations.
The allocation of two power plant blocks to one cooling tower unit is new in the Moorburg PAFAND
cooling tower and is therefore designed with two independent hydraulic segments.
On the air side, an outage circuit breaker was chosen for each block-associated cooling tower segment
in order to stay plume-free as far as possible when only one block is in operation.
As the power plant is normally operated with continuous cooling, the change-over to the circuit
operation with the Hybrid unit can be made without special provisions if required. Thus the
availability of the power plant is continuous all year round.
The axial flow fans, which are installed to reduce the height of the cooling tower, are arranged on two
levels. The level between the fan platforms of the wet and the dry parts is used for the placement of
the auxiliary power units, the booster pump, the tube cleaning (heat exchanger) and air evacuation
equipment.
This design provides compliance with the restricted space conditions at the Moorburg location.
This commission demonstrates that Hamon technology for cooling systems of all types meets the
highest requirements and provides state-of-the-art solutions.
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