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. Technical performance of heat exchangers: Shell-and-tube heat exchangers remain, to date, the most widely used type of heat exchange equipment in various industries. High and low pressure feedwater heaters as well as peak heating heaters for heat networks used in the thermal power generation and cogeneration industries ； Coolers, evaporators, and reboilers used in the petrochemical catalysis and cracking industries ； Water-to-water heaters and gas-to-gas heat exchangers used in the fertilizer industry’s transformation and purification processes ； Heating water circulation heaters and domestic hot water heaters used in the heating, air conditioning, and refrigeration industries. Our company is committed to designing and manufacturing high-performance shell-and-tube heat exchangers, optimizing their structural design to extend their service life. High heat transfer coefficient: The heat exchange tubes are made of grooved tubes, corrugated tubes, or threaded tubes, all of which are efficient heat transfer elements. Heat exchangers constructed using these tubes can create intense turbulence in the fluid flow even when the flow velocity is low and the fluid resistance is minimal. This enhances the heat transfer rate both inside and outside the tubes, thereby increasing the overall heat transfer coefficient of the heat exchanger. Low tendency to scale: The use of grooved tubes, corrugated tubes, or threaded tubes alters the flow pattern of the fluid, resulting in a stronger scouring effect of the fluid on the tube walls ； The heat exchange tubes experience low-frequency vibrations, which disrupt the conditions necessary for dirt to accumulate and prevent scale formation; thus, they have the function of automatically removing and preventing scale. Therefore, the heat exchange tubes are less prone to scaling, allowing the heat exchanger to maintain high efficiency over a long period of time. 3. Difficult to leak: The grooves, corrugations, or threads on the heat exchange tubes function similarly to expansion joints, providing the ability to compensate for thermal stresses. This allows them to eliminate the thermal expansion forces that arise when the tube side and shell side are exposed to different temperatures, thereby preventing thermal stress-induced damage to the heater and reducing the risk of leakage. Optimized structural design: An optimized structural design is employed, enabling the heat exchanger to operate with low noise, high efficiency, safety, stability, easy control, and a long service life. http://www.jilinzhao*.com/