ALF – Alfa Laval Filter - Alfa Laval - #1

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A filter for cooling systems using low-quality water ALF – Alfa Laval Filter The use of inexpensive secondary cooling water has become a widely accepted and successful solution to cooling problems within industry, on ships, in power plants and in district heating and cooling systems. However, as the supply of good quality cooling water has diminished, the need for cost-efficient solutions to eliminate clogging, fouling and corrosion has become more apparent. In a cooling system incorporating a plate heat exchanger and an Alfa Laval Filter, polluted or corrosive water can now cool even the most sensitive process equipment. The Alfa Laval Filter operates as an integral part of a cooling system to remove debris which can foul and clog a plate heat exchanger or a tubular condenser. The Alfa Laval Filter is also well suited for use with many process liquids for which filtration is required. In spite of effective screening at the water intake, mussels and other forms of marine life can get into the heat exchanger and settle on the heat transfer surface. Such conditions are ideal for the growth of these forms of life and they multiply rapidly, causing reduced heat transfer and even breakdown of the heat exchangers. Measures such as backflushing and chlorination are not always sufficient if the blockage is severe, and in some cases, chlorination is prohibited by environmental legislation. The Alfa Laval Filter protects the heat exchanger from clogging and fouling and also prevents blockages in the cooling water system. This filter, which is generally installed close to the heat exchanger inlet, removes debris and marine life and is automatically backflushed at regular intervals.