Why is daily maintenance of stainless steel heat exchange tubes important?
By: mxgy,
Why do stainless steel heat exchange tubes need frequent maintenance? Many people have this question. Daily maintenance is crucial for stainless steel heat exchange tubes for the following reasons:
1. Dirt deposition leads to a sudden drop in efficiency
Calcium and magnesium ions in water can quickly precipitate hard scales such as calcium carbonate (CaCO3) at high temperatures. A 1mm scale layer can reduce the heat transfer efficiency of a heat exchange tube by 10% -15%. After daily operation, micro scale deposits may form on the tube wall, and if left to accumulate, it will significantly increase energy consumption.
In industrial environments, pollutants such as oil, dust, and biofouling are prone to adhere to pipe walls and form insulation layers. For example, protein residues from food factories or polymer residues from chemical factories can cause local temperature anomalies of over 5 ℃ within 24 hours.
2. Corrosion risk persists
Chloride ion threat: The concentration of chloride ions (Cl ⁻) in circulating water fluctuates greatly, especially in coastal or chemical areas. Single day exposure to excessive chloride ions (>50mg/L) may induce pitting corrosion or stress corrosion cracking at the weld seam.
Electrochemical corrosion: If the pipeline comes into contact with other metals (such as carbon steel supports), a galvanic cell may form within a day due to the electrolyte environment, accelerating local corrosion perforation of stainless steel.
3. Hidden danger of sealing failure
Changes in temperature difference (such as starting and stopping equipment) can cause thermal expansion and contraction of flange gaskets. Multiple temperature cycles in a single day can lead to a 20% decrease in sealing preload, causing medium leakage. Leakage of high-temperature heat transfer oil or corrosive fluids may also cause safety accidents.
In vibration environments (such as near pump rooms), bolts may become loose and displaced daily, and need to be tightened daily.
4. Economic feasibility of preventive maintenance
Cost comparison of stop loss: Daily cleaning only requires 0.5 hours of manual labor, while stopping chemical cleaning after scaling blockage takes 2-3 days, resulting in a direct loss of production capacity of hundreds of thousands of yuan.
Lifetime correlation: Timely removal of dirt can prevent corrosion under the dirt, extending the service life of heat exchange tubes by 3-5 years; If the corrosion depth exceeds 0.5mm, the entire pipe needs to be replaced.
In high load scenarios such as chemical, power, and food industries, “daily maintenance” is essentially the lowest cost anti failure strategy – replacing 72 hours of downtime maintenance with 10 minutes of daily inspection, and avoiding the risk of leakage and explosion.
Why is daily maintenance of stainless steel heat exchange tubes important?
By: mxgy,
Why do stainless steel heat exchange tubes need frequent maintenance? Many people have this question. Daily maintenance is crucial for stainless steel heat exchange tubes for the following reasons:
1. Dirt deposition leads to a sudden drop in efficiency
Calcium and magnesium ions in water can quickly precipitate hard scales such as calcium carbonate (CaCO3) at high temperatures. A 1mm scale layer can reduce the heat transfer efficiency of a heat exchange tube by 10% -15%. After daily operation, micro scale deposits may form on the tube wall, and if left to accumulate, it will significantly increase energy consumption.
In industrial environments, pollutants such as oil, dust, and biofouling are prone to adhere to pipe walls and form insulation layers. For example, protein residues from food factories or polymer residues from chemical factories can cause local temperature anomalies of over 5 ℃ within 24 hours.
2. Corrosion risk persists
Chloride ion threat: The concentration of chloride ions (Cl ⁻) in circulating water fluctuates greatly, especially in coastal or chemical areas. Single day exposure to excessive chloride ions (>50mg/L) may induce pitting corrosion or stress corrosion cracking at the weld seam.
Electrochemical corrosion: If the pipeline comes into contact with other metals (such as carbon steel supports), a galvanic cell may form within a day due to the electrolyte environment, accelerating local corrosion perforation of stainless steel.
3. Hidden danger of sealing failure
Changes in temperature difference (such as starting and stopping equipment) can cause thermal expansion and contraction of flange gaskets. Multiple temperature cycles in a single day can lead to a 20% decrease in sealing preload, causing medium leakage. Leakage of high-temperature heat transfer oil or corrosive fluids may also cause safety accidents.
In vibration environments (such as near pump rooms), bolts may become loose and displaced daily, and need to be tightened daily.
4. Economic feasibility of preventive maintenance
Cost comparison of stop loss: Daily cleaning only requires 0.5 hours of manual labor, while stopping chemical cleaning after scaling blockage takes 2-3 days, resulting in a direct loss of production capacity of hundreds of thousands of yuan.
Lifetime correlation: Timely removal of dirt can prevent corrosion under the dirt, extending the service life of heat exchange tubes by 3-5 years; If the corrosion depth exceeds 0.5mm, the entire pipe needs to be replaced.
In high load scenarios such as chemical, power, and food industries, “daily maintenance” is essentially the lowest cost anti failure strategy – replacing 72 hours of downtime maintenance with 10 minutes of daily inspection, and avoiding the risk of leakage and explosion.
