I. Advantages of Material Characteristics
1. Thermodynamic Performance
Copper's thermal conductivity of 401W/(m-K), significantly higher than stainless steel and other common metals, can achieve rapid heat transfer and uniform temperature distribution. This characteristic gives it an irreplaceable advantage in heat transfer systems that require fast response.
2. Chemical stability analysis
The dense oxide film formed on the surface of copper can effectively resist water corrosion within the range of pH 5.5-12, and maintain good corrosion resistance under the working conditions containing chloride ≤ 2mg/L. The chemical stability of copper tubes can be analyzed by the chemical stability analysis. Experimental data show that the annual corrosion rate of copper pipe in the circulating water system does not exceed 0.002mm.
3. High-temperature oxidation resistance
In the continuous working temperature ≤ 150 ℃ conditions, copper surface formation of Cu2O protective layer can effectively prevent further oxidation, the oxidation of the weight gain rate of carbon steel is lower than 2-3 orders of magnitude.
Second, the project application points
1. System design and installation specifications
(1) It is recommended to install more than 40 mesh filters to prevent solid particles from being deposited.
(2) Dissimilar metal connections must be used when the insulating gasket to avoid galvanic corrosion
(3) Piping slope should be maintained ≥ 0.3% to ensure thorough drainage.
2. Operation and maintenance requirements
(1) Monthly detection of the temperature difference between the inlet and outlet water, the temperature difference of more than 15% of the design value should be cleaned
(2) It is recommended to use pH value of 7-8.5 softened water as the media
(3) Chemical cleaning prohibit cleaning agents containing sulfur and ammonia components.
3. Performance monitoring standards
(1) Quarterly measurement of pipe wall thickness, the annual thinning amount of > 0.1mm need to be early warning
(2) regular eddy current testing, found that ≥ 10% wall thickness defects should be replaced
(3) heat transfer coefficient drop of more than 20% need to carry out professional maintenance
Through scientific selection and design and standardized operation and maintenance management, copper heat transfer equipment can run stably for more than 15 years, and its full life cycle cost is 30%-40% lower than that of ordinary steel equipment.
We can provide high quality products, good service and competitive price. We have been committed to producing high quality copper products such as copper tubes, copper wires, copper plates, copper strips, copper rods and other copper products.
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