Da Lin Power Station Taiwan-HydroPath provides a solution for Biofouling in Power Station
Seawater is used as a coolant in the heat exchanger. Since the temperature inside the exchanger was below 50°C, scale was not a big problem. The problem was biofouling. lnvestigations have shown that a layer of 250 microns thick microfouling can reduce heat transfer efficiency by up to 25°c. Microfouling also reduces water flow and increases corrosion.
At Da Lin Power Station, each exchanger operated for only two months before service was required, and then it took three days or more for cleaning.