ASTM Shell and Tube Heat Exchanger

Shell and tube heat exchangers are commonly used heat transfer equipment.

GNEE is a shell and tube heat exchanger manufacturer whose products are widely applied in industries such as chemical, petroleum, food, and pharmaceutical. With its own shell and tube heat exchanger factory, the company ensures high-quality production and flexible customization for different industrial needs. GNEE specializes in producing heat exchangers of various materials and models.

• Shell and tube heat exchangers are composed of shell, heat transfer tube bundle, tube sheet, baffle and head.
• In the schematic tubular heat exchanger diagram above, the shell is mostly cylindrical, with tube bundle inside, and the two ends of the tube bundle are fixed on the tube sheet.
• The two hot and cold fluids for heat exchange, one flows in the tube, called tube-side fluid; the other flows outside the tube, called shell-side fluid.
• In order to improve the heat transfer coefficient of the fluid outside the tube, several baffles are usually installed in the shell.
• The baffle can increase the shell-side fluid velocity, forcing the fluid to pass through the tube bundle horizontally for multiple times according to the specified distance, and enhance the turbulence of the fluid.
• The heat exchange tubes can be arranged in equilateral triangles or squares on the tube sheet.
• The equilateral triangle arrangement is more compact, the turbulence of the fluid outside the tube is high, and the heat transfer coefficient is large; the square arrangement is convenient for cleaning the outside of the tube, which is suitable for fluids that are prone to scaling.

Classification by Structure

• Fixed tube sheet heat exchanger: The tube sheets at both ends of the tube bundle of the fixed tube sheet heat exchanger are integrated with the shell, with a simple structure. It is suitable for heat exchange operations when the temperature difference between cold and hot fluids is not large and the shell side does not require mechanical cleaning.

• U-tube heat exchanger: Each heat exchange tube of the U-tube heat exchanger is bent into a U shape, and the two ends are fixed to the upper and lower areas of the same tube sheet, and are divided into inlet and outlet chambers with the help of the partition in the tube box.
• Floating head heat exchanger: The tube sheet at one end of the floating head heat exchanger tube bundle can float freely, completely eliminating thermal stress; and the entire tube bundle can be pulled out from the shell, which is convenient for mechanical cleaning and maintenance.

Classification by medium

• Air to air heat exchanger; water to water exchanger; industrial water to air heat exchanger.

Classification by material

• Stainless steel shell-and-tube heat exchanger: 304/304L/316/316L/2205/2507
• Carbon steel tube heat exchanger: A285 Grade C/Q345R/SPV450, etc.
• Copper tube heat exchanger: UNS C12200/UNS C44300/UNS C68700, etc.
• Titanium tube heat exchanger: TA1/TA2, etc.
• Etc.

• High efficiency and energy saving,the heat transfer coefficient is crucial in determining shell and tube heat exchanger efficiency, the heat transfer coefficient of this heat exchanger is 6000-8000W/m2.0C.
• Fast heat exchange speed, high temperature resistance (400℃), high pressure resistance (2.5Mpa)
• Compact structure, small footprint, light weight, easy installation, saving investment.
• Wide application conditions, suitable for large pressure, temperature range and heat exchange of various media.
• Corrosion-resistant shell-and-tube heat exchanger made of copper, titanium, stainless steel and other materials have a long service life and save costs.