Used and Surplus Shell & Tube Heat Exchangers

Types of Shell and Tube Heat Exchangers Available at JM Industrial

We buy and sell following types of used shell and tube heat exchangers:

• U-Tube Heat Exchangers: The tubes in the tube bundle of these heat exchangers are bent to U-shape and secured using a tube plate. These U-shaped tubes lend the name to this device. The bent tubes float freely in the shell and can contract and expand easily. The heat exchangers are generally used in applications where expansion is expected as the result of temperature differences.
• Floating Head Exchangers: This exchanger features a design that is a combination of a U-tube heat exchanger and fixed tube sheet exchanger. On its one end, the tube sheet is of floating type to accommodate expansion and on the other end, it is stationary.
• Fixed Tube Sheet Exchangers: They feature two sheets that are welded to the shell, and they remain stationary. These heat exchangers are not suited for applications where expansion may be expected due to temperature differences.
• Sanitary Heat Exchanger: Sanitary heat exchangers are designed for use in the food, beverage, and pharmaceutical industries where hygiene is of utmost importance. These heat exchangers are constructed with materials that are easy to clean and prevent contamination.
• Stainless Steel Heat Exchanger: Stainless steel heat exchangers are commonly used in industrial applications that require high levels of durability and resistance to corrosion. They are made from high-quality stainless steel materials that can withstand harsh environments and extreme temperatures.
• Double Pipe Heat Exchanger: Double pipe heat exchangers consist of two concentric pipes, one inside the other. The two fluids that need to be heated or cooled flow through each pipe in opposite directions. This design allows for efficient heat transfer and is commonly used in small-scale applications where space is limited.

Working of Shell and Tube Heat Exchangers Explained

A shell and tube heat exchanger is made of four parts – a front header, a rear header, tube bundle, and shell.

• Front Header: This is the part through which the fluid enters the exchanger and passes through its tubes.
• Rear Header: This is the part that holds the fluid leaving the tubes. Sometimes, the fluid returns to the front header from the rear header. This mainly occurs in equipment with multiple passes for tubes.
• Tube Bundle: It comprises tube sheets, tubes, tie rods, and baffle sheets. The tie rods keep the bundle together.
• Shell: It holds the tube bundle.

The fluid enters the device through the front header and leaves through the rear header. In tube-side flow, the fluid passes through tube bundles, which are secured by metal plates that are known as tube plates or tube sheets. In shell side flow, the fluid starts at the shell inlet, passes through these tubes, and exits through outlets. The headers on the tube side act as reservoirs and they are often split into sections depending on the heat exchanger types.

A shell and tube heat exchanger can be designed as single-phase and two-phase device. In a single-phase exchanger, the phase of the fluid remains constant throughout, whereas in a two-phase device the fluid’s phase may change.

Specifications and Selection Criteria of Shell and Tube Heat Exchangers

Shell and tube heat exchangers are commonly used in a variety of industries for transferring heat between two fluids. They consist of a cylindrical shell with a bundle of tubes inside, through which the fluids flow. The following are some important specifications and selection criteria for shell and tube heat exchangers:

• Heat transfer requirements: The heat transfer rate required for the application will determine the size and configuration of the heat exchanger. The heat transfer rate is dependent on factors such as the type of fluid, flow rate, temperature, and heat transfer coefficient.
• Tube size and configuration: The diameter, thickness, and length of the tubes will depend on the heat transfer requirements and the properties of the fluids being used. The configuration of the tubes can be straight, U-shaped, or helical.
• Shell size and configuration: The size of the shell will depend on the number and size of the tubes required for the application. The shell can be designed with a single pass or multiple passes for the fluids.
• Material of construction: The material of construction for the shell and tubes will depend on the properties of the fluids and the operating conditions. Common materials include stainless steel, carbon steel, and copper alloys.
• Pressure and temperature ratings: The design of the heat exchanger should be able to withstand the pressure and temperature of the fluids. The pressure and temperature ratings of the heat exchanger should be selected based on the highest expected operating conditions.
• Maintenance and cleaning requirements: The design of the heat exchanger should allow for easy maintenance and cleaning. Features such as removable tube bundles and access ports can simplify these tasks.
• Cost: The cost of the heat exchanger will depend on the materials of construction, size, and configuration. The selection should balance the cost with the required heat transfer performance and reliability.

Applications of Used and Surplus Shell and Tube Heat Exchangers

Surplus and used shell and tube heat exchangers for sale, which is designed for use in the following industries:

• HVAC
• Food and beverage processing
• Marine applications
• Pharmaceuticals
• Air processing and compressor cooling
• Refrigeration

Why Buy Used Shell and Tube Heat Exchangers?

JM Industrial provides wide range of industrial shell and tube heat exchangers for sale, these are important industrial devices and they contribute to the process outcomes. Although buying new shell and tube heat exchangers is good, still buying used ones are beneficial in many ways due to the following reasons:

• Industrial used shell and tube heat exchangers offered on our website are available for immediate purchase. This helps cut down your wait times.
• Many industrial equipment requires huge upfront investments and shell and tube heat exchangers are no different. Used shell and tube heat exchangers are available at one-fourth prices, which helps buyers to use their purchase budgets wisely.
• The depreciation value is low with used equipment, so buyers can avoid initial deprecation which is higher in the first few months.
• Used shell and tube heat exchangers certainly make an eco-friendly choice because no manufacturing is involved. As you may know, manufacturing is an energy-intensive process.

At JM Industrial, we prioritize a customer above anything else. We offer them opportunities to buy and sell used heat exchangers, used air coolers, electric heaters , Plate Type Heat Exchangers , Spiral & Helical Heat Exchangers, Steam Heat Exchangers and more. If you are still confused about how to sell or buy shell and tube heat exchangers, you can get in touch with the team today.