Air condenser cleaning at waste incineration plant boosts energy efficiency
Mike Edwards
Features energy efficiencyThe constant availability of an automated cleaning system has brought about significant benefits for the EEW waste incineration plant in Hannover, Germany. Especially in spring and summer, finned heat exchangers quickly become polluted by pollens, sand, dust and other suspended particles in the environment.
These form an insulating layer on the lamellar, which considerably reduces condensate cooling. Nevertheless, in order to achieve the required cooling capacity, the rotors on the heat exchangers have to turn faster and consume significantly more energy.
Outside view of cleaning (above).
Obstacles located on the surfaces of the exchanger are automatically bypassed by sensors.
The turbine power and thus the energy production also have to be reduced in warmer ambient temperatures, if the steam condensate in the air condenser is no longer sufficiently cooled. The inlet temperature of the condensate in the air condenser is approx. 100°C, the heat loss of the air condenser areas is often above 65°C.
Inside view of cleaning.
Using a JetMaster AS from Bielefeld, Germany-based mycon at the plant, it is possible to start cleaning at any time. The EEW location plans up to 25 cleaning cycles a year.
The complete system JetMaster offers four different combination possibilities and can be adjusted exactly to the cleaning task. Even the hardest calcifications and large amounts of residue can be removed. The gentle jet penetrates deep into the equipment without bending / damaging the lamellas. The dirt is gently but effectively removed through the jet from the surfaces. Damage to the lamellar surfaces, as possible with the use of high pressure water cleaning, is completely eliminated when using the JetMaster.
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