Physical and chemical properties of heat exchanger fouling

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The layer of deposits that forms on the heated surfaces and heat transfer surfaces is commonly referred to as scale. In heat exchangers, especially those with circulating cooling such as compressed cold plates, there are decomposed bicarbonate products and microbial sludge. Carbonate scale is the primary type of scale in circulating cooling water systems and the heat transfer surfaces of heat exchangers. Basic properties of carbonate scale: Carbonate scale appears white or grayish-white in color. If the equipment is corroded, it will take on the color of the corrosion products. Carbonate scale is hard and brittle, adheres firmly, and is difficult to remove. For circulating cooling water, the water quality should be tested regularly to ensure it meets the standards specified in GB50050 \"Quality Standards for Circulating Cooling Water\". When the water quality does not meet these standards, it should be treated using the methods outlined in GBJ50 \"Design Code for Industrial Circulating Cooling Water Treatment\"; this approach helps to prevent scale from affecting the heat exchange efficiency of the equipment