Issue of circulating water flow rate in the inner tube of the heat exchanger
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At what flow rate below which will the circulating water in the heat exchanger’s tube side be prone to under-scale corrosion? Could someone please explain this?
A decrease in the circulating water flow rate exacerbates scaling in the heat exchange tubes; at low flow rates, deposits accumulate on these tubes, leading to severe sludge formation and corrosion. According to Article 2.1.18 of the \"Code for Design of Industrial Circulating Water Cooling Systems\", the design flow velocity at the starting section of the main water distribution pipe in a tubular water distribution system should be between 1.0 and 1.5 m/s. Article 2.1.19 The trough-type water distribution system shall meet the following requirements: The design flow velocity at the starting section of the main water trough should be in the range of 0.8 to 1.2 m/s ； The design flow velocity at the starting section of the water distribution tank should be between 0.5 and 0.8 m/s ； Refer to the following discussion: http://bbs.hcbbs.com/thread-471315-1-1.html