Product Introduction
In many industrial processes, limited flow rate or low heat transfer efficiency on the tube side has long been a pain point for users. To solve this, Yuhong has developed a full series of multi‑pass shell and tube heat exchangers. By dividing the tube side into 2, 4, 6 or more passes, we greatly increase fluid velocity, enhance turbulence, and significantly improve overall heat transfer performance.
This type of heat exchanger is widely used in chemical plants, refineries, power stations, HVAC systems, water heating, refrigeration, wastewater heat recovery, and many other fields. Yuhong provides professional thermal design, customized manufacturing, pressure testing, installation guidance, and after‑sales support to ensure your system operates efficiently and stably for a long service life.
Working Principle & Structure
Yuhong multi‑pass shell and tube heat exchangers adopt a fixed tube‑sheet or floating head structure, with a specially designed channel head and partition plates.
- The tube‑side fluid is divided into several passes by the partition inside the channel head.
- The fluid flows back and forth through the tube bundle multiple times, increasing flow velocity and heat transfer coefficient.
- The shell‑side fluid flows across the tubes, guided by baffles to form ideal cross flow or mixed flow.
- Higher velocity = stronger turbulence = higher heat transfer efficiency = smaller equipment size.
Compared with single‑pass heat exchangers, multi‑pass models can achieve the same heat duty with smaller volume, less material, and lower operating cost, making them the preferred choice for medium and low flow rate working conditions.
Main Technical Parameters
| Parameter |
Standard Specification Range |
Yuhong Customization & Service |
| Type |
Multi‑Pass Shell and Tube Heat Exchanger |
2‑pass, 4‑pass, 6‑pass, custom passes |
| Design Pressure |
0.1 – 25 MPa |
High‑pressure reinforced design available |
| Design Temperature |
-196℃ – 600℃ |
Adapt to low‑temp, medium & high‑temp systems |
| Shell Material |
Carbon Steel, SS304, SS316L, Alloy Steel |
Selected based on corrosion & pressure |
| Tube Material |
Stainless Steel, Carbon Steel, Copper Alloy, Titanium, Duplex Steel |
Custom material for corrosive media |
| Heat Exchange Area |
1 – 2500 ㎡ |
Fully customized to thermal load |
| Tube Diameter |
Φ19×2, Φ25×2.5, Φ38×3 mm |
Optimized for velocity & heat transfer |
| Number of Tube Passes |
1, 2, 4, 6, 8 |
Custom passes to match your flow rate |
| Baffle Type |
Segmental, Orifice, Rod Baffle |
Reduce vibration & improve efficiency |
| Connection Standard |
ANSI, GB, DIN, JIS |
Fully match your pipeline standard |
| Applicable Media |
Water, oil, steam, gas, chemical solution, clean or low‑fouling fluid |
Professional design for different media |
Key Advantages
1. Greatly Improved Heat Transfer Efficiency
Multi‑pass design increases tube‑side flow velocity, strengthens turbulence, reduces thermal resistance, and improves heat transfer coefficient by 30%–100% compared with single‑pass under the same conditions.
2. More Compact & Cost‑Effective
Higher efficiency allows smaller heat exchange area, smaller shell diameter, shorter tube length, saving equipment cost, pipeline cost, and installation space.
3. Flexible Adaptation to Flow Conditions
By adjusting the number of passes, Yuhong can optimize performance for low flow, high flow, high viscosity, low viscosity and other working conditions, avoiding low efficiency or excessive pressure drop.
4. Wide Applicability
Suitable for heating, cooling, heat recovery, condensation, and evaporation. Widely used in industrial processes where efficiency and space are important.
5. Stable Structure & Long Service Life
Mature channel head and partition design, reliable tube expansion and welding, strict pressure testing, ensuring no leakage and long‑term stable operation.
6. Easy Operation & Maintenance
Simple structure, convenient operation, easy cleaning and maintenance, reducing your daily management cost and downtime.
Yuhong One‑Stop Professional Services
1. Custom Thermal & Hydraulic Design
Yuhong’s engineering team performs precise calculations based on your actual parameters:
- Inlet & outlet temperature
- Flow rate
- Operating pressure
- Medium properties
- Fouling resistance
- Installation space
We design the optimal number of passes, tube diameter, baffle spacing, and shell size to achieve the best efficiency and economy.
2. Precision Manufacturing & Full Testing
Each heat exchanger is manufactured under strict quality control, including:
- Raw material inspection
- Precision tube bending & assembly
- Standardized welding & expansion
- Hydrostatic pressure test
- Air tightness test
- Dimensional inspection
Products comply with GB, ASME, DIN and other international standards.
3. Tube Bundle & Spare Parts Supply
We provide dedicated tube bundles, gaskets, bolts, nozzles, and spare parts for multi‑pass heat exchangers, supporting long‑term stable operation.
4. On‑Site Installation & Commissioning
Yuhong provides on‑site installation guidance, equipment commissioning, pipeline connection support, and operator training to ensure fast and smooth startup.
5. Long‑Term After‑Sales & Technical Support
We offer:
- Regular maintenance and inspection
- Troubleshooting and technical consultation
- Equipment retrofit and performance upgrade
- 24‑hour online support
Helping you extend equipment life and reduce total operating cost.
Conclusion
Yuhong multi‑pass shell and tube heat exchangers are high‑efficiency, energy‑saving, and compact heat transfer solutions for modern industrial systems. With outstanding performance, reliable quality, and comprehensive services, they help customers improve efficiency, reduce energy consumption, and lower operating costs.
Whether you need a standard 2‑pass / 4‑pass heat exchanger or a fully customized multi‑pass solution, Yuhong has the professional strength to support your project.
Contact us with your process parameters, and we will provide a complete technical proposal, performance datasheet, layout drawing, and formal quotation.
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