2. What Are Heat Exchangers Shell and Tube 

Heat exchangers shell and tube use a cylindrical shell and a bundle of tubes to transfer heat between two fluids. The system places one fluid in the tubes. The other fluid then flows around the tubes in the shell. The design allows the exchanger to work under extreme process conditions.

Engineers use this style in refineries, chemical plants, power plants, HVAC systems, marine industries, and many other high-duty processes.

General heat exchanger engineering standards:

https://www.astm.org/search/result?q=tubular%20heat%20exchanger

3. The Main Components of Heat Exchangers Shell and Tube

Shell

The outer vessel that directs the fluid through the tube bundle.

Tube Bundle

A bundle of tubes through which the tube-side fluid flows.

Tube Sheets

Plates that support and seal the tube ends.

Baffles

Metal plates that direct fluid flow for greater turbulence and stronger heat transfer.

Channel Heads

Front and rear heads that direct tube-side flow.

Engineers select strong materials such as stainless steel, carbon steel, copper alloys, titanium, or nickel-based alloys to make each part since each part supports high load and stress.

4. The Working Process of Heat Exchangers Shell and Tube

The working process involves the following steps:

• Fluid flows into the tube side.
• Another fluid flows into the shell side.
• Baffles direct shell-side flow across the tubes.
• High turbulence intensifies the heat transfer rate.
• Fluids flow out at a controlled temperature.

Engineers configure it for specific duties because the system supports single-pass and multi-pass flow patterns.

5. Features of Heat Exchangers Shell and Tube 

✔ Tolerate high pressure

Tube bundle can bear great pressure inside.

✔ Resist high temperature

Metal material provides high stability under high temperature.

✔ Easy cleaning

Tube bundle can be dismantled for convenience of cleaning.

✔ Design flexibly

Tube diameter, pitch, baffle spacing, flow channel, and flow arrangement can be adjusted by design engineer.

✔ Excellent mechanical strength

The unit body has a long service life.

6. Advantages of Heat Exchangers Shell and Tube 

1. Large heat duty range

Suitable for cryogenic applications or high temperature situations.

2. High flow rate capacity

Tube and shell diameter with sufficient flow area can deal with high flow rate.

3. Long life

Good mechanical structure brings long service life.

4. Easy upscaling

Shell side and tube length can be selected to be bigger to upgrade heat duty.

5. Variety of applications

Good performance in gas-gas, gas-liquid and liquid-liquid heat exchangers.

6. Corrosion resistant

Titanium or special alloy material can be used to deal with corrosive fluid.

7. التطبيقات

Heat exchangers shell and tube unit finds applications in various industries, including:

• Petrochemical processing
• Oil and gas refining
• توليد الطاقة
• HVAC chillers
• Food processing
• Marine engines
• Pharmaceutical plants
• استعادة الحرارة المهدرة

Its ability to operate in harsh conditions makes it essential for critical processes.

8. How to Select Heat Exchangers Shell and Tube

Selecting the right shell and tube heat exchanger involves several considerations:

1. Heat Duty

The size of the exchanger must match the required capacity.

2. Temperature Range

Select materials compatible with the temperature conditions.

3. Fluid Corrosiveness

Use corrosion-resistant materials like stainless steel or titanium for corrosive media.

4. Pressure Limit

The shell and tubes must safely withstand the operating pressure.

5. Fouling Tendency

Choose larger tube diameters or special coatings if fouling is an issue with the fluid.

6. Maintenance Needs

Consider whether a removable or fixed tube bundle design is more appropriate for maintenance.

Visit customindustrialheatexchanger.com for more information on selecting the right heat exchanger with technical support from Nanjing Bangwin Thermal for industrial applications.

9. الأسئلة الشائعة

1. Why do industries prefer shell and tube heat exchangers?

Shell and tube heat exchangers provide high pressure, high temperature, and heavy-duty capability, which is essential for industry needs.

2. Which materials are more suitable for tubes?

Stainless steel, titanium, copper, and nickel alloys are more suitable materials.

3. Do the heat exchangers support expansion?

Yes. Engineers scale up the capacity of shell and tube heat exchangers by adjusting the length of the tube or diameter of the shell.

4. How frequently should I clean the tube side?

The frequency of cleaning depends on fouling rate, type of fluid, and operating hours.

5. Can I recover waste heat through the system?

Yes. In many industrial plants, the systems are installed for waste-heat recovery.

10. Conclusion

Heat exchangers in shell and tube systems have high durability, wide operating window, and high thermal capability. For this reason, industries depend on the system for stable and efficient heat transfer. At Nanjing Bangwin Thermal, we stand by engineers through the customindustrialheatexchanger.com, a resource to help industrial plants select the most suitable heat exchanger for heavy-duty applications.