In practice, the heat transfer effect of heat exchanger is closely related to the material and process characteristics of heat exchanger. In the process of material concentration, solutes or impurities often deposit on the heated surface and crystallize to form scale layer, which affects heat transfer. Some solutes are heat sensitive and tend to deteriorate if they stay too long at high temperature. Some materials have greater corrosion or higher viscosity and so on.
Physical properties
Titanium heat exchanger is made of high quality titanium tube. In terms of physical properties, titanium tubes have many advantages such as light weight and superior mechanical properties. The tensile strength of pure titanium is up to 180kg/mm2. Some steels are stronger than titanium alloys, but the specific strength of titanium alloys (the ratio of tensile strength to density) exceeds that of high-quality steels. In addition, titanium alloys have good heat resistance, low temperature toughness and fracture toughness.
Chemical properties
Titanium exhibits good chemical stability and corrosion resistance in a variety of industrial solutions. Industrial pure titanium is an excellent material for refrigeration equipment accessories.
Industrial pure titanium can be widely used in organic compounds, alkali solutions, salt solutions and other media, and is not easy to react with it, excellent corrosion resistance; Pure titanium has good corrosion resistance to low concentration of hydrochloric acid, sulfuric acid, nitric acid and other inorganic acids at room temperature. However, with the increase of the medium concentration and working temperature, the industrial pure titanium is easy to react with the above inorganic acids, which reduces the corrosion resistance of titanium. Therefore, attention should be paid to the concentration and working temperature of the medium in the heat transfer process.
Industrial pure titanium has good corrosion resistance to formic acid, oxalic acid, lactic acid and other organic acids at room temperature.
