Finned heat exchangers significantly increase the heat transfer area by adding fins to the surface of the base tube, compensating for the insufficient heat transfer performance of gases or fluids with low thermal conductivity, thereby enhancing the heat exchange efficiency.
The fins attach to the base tube or base plate surface, significantly increasing the effective heat transfer area of the heat exchanger.
The fin types are diverse, including flat fins, corrugated fins, serrated fins, and perforated fins.
By selecting materials and strengthening the structure, it can be applied to high-temperature flue gas waste heat recovery or high-pressure refrigeration systems.
The cost of the fin material is low, and through efficient heat transfer, the equipment volume is reduced, lowering the overall cost. The modular design allows for segmented cleaning and some types can be disassembled for maintenance.
Finned heat exchangers are common heat exchange equipment compared with detachable plate heat exchangers and shell and tube heat exchangers. They have significant differences in structure, working principle, application scenarios, etc. The following are their main differences:
Characteristic | Finned Heat Exchanger | Detachable Plate Heat Exchanger |
---|---|---|
Heat Transfer Efficiency | High gas-side efficiency (fin-enhanced surface area)36 | Superior overall coefficient (turbulence-enhanced flow)37 |
Pressure Drop | Low gas-side resistance (optimized fin design)3 | Significant (complex flow channels)6 |
Pressure Resistance | High (robust base tube structure)3 | ≤2.5 MPa (gasket limitations)67 |
Suitable Media | Gas-liquid/gas-vapor multiphase flows3 | Clean liquids/steam (anti-clogging design)67 |
Maintenance | Challenging fin-side cleaning3 | Detachable plate cleaning system67 |
Compactness | Bulkier (fin spacing requirements)3 | High density (1000 m²/m³ compact ratio)6 |
Characteristic | Finned Heat Exchanger | Shell-and-Tube Heat Exchanger |
---|---|---|
Heat Transfer Efficiency | Enhanced convection (fin optimization)36 | Moderate (baffle-dependent flow)37 |
Pressure Drop | Elevated (tortuous flow paths)3 | Reduced (streamlined configuration)6 |
Pressure Rating | Medium-low (≤4.0 MPa)3 | High-pressure design (≤10 MPa)67 |
Media Compatibility | Gas-gas/gas-liquid versatility3 | Liquid-liquid/high-viscosity fluids6 |
Serviceability | Specialized tools required3 | Retractable tube bundle maintenance6 |
Space Efficiency | Area/volume ratio >700 m²/m³3 | Spacious layout (maintenance allowance) |
Finned heat exchangers significantly increase the heat transfer area by adding fins to the surface of the base tube, compensating for the insufficient heat transfer performance of gases or fluids with low thermal conductivity, thereby enhancing the heat exchange efficiency.
Finned heat exchangers significantly increase the heat transfer area by adding fins to the surface of the base tube, compensating for the insufficient heat transfer performance of gases or fluids with low thermal conductivity, thereby enhancing the heat exchange efficiency.
Finned heat exchangers significantly increase the heat transfer area by adding fins to the surface of the base tube, compensating for the insufficient heat transfer performance of gases or fluids with low thermal conductivity, thereby enhancing the heat exchange efficiency.
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