DELLOK YONGHUI DIESTA Enhanced Finned Tubes - 20% Length Reduction, 3% Capacity Increase for Heat Exchangers
DELLOK YONGHUI DIESTA technology represents an innovative bimetallic finned tube solution specifically engineered for air-cooled heat exchangers in demanding industrial applications.
- LNG air-cooler systems including MR compressor intercoolers and aftercoolers
- Refrigerant coolers (desuperheater, condenser, and subcooler)
- Ethylene quench-water air coolers for naphtha-based crackers
- Gas processing plants and compression stations
- Refinery operations
- Greenfield installations and revamp debottlenecking projects
- CAPEX Reduction: Up to 20% air-cooler field length reduction
- Revenue Enhancement: Up to 3% capacity increase in LNG applications
- Environmental Impact: Improved CO₂ footprint through reduced compression work
- Infrastructure Savings: Reduced requirements for structures, piping, wiring, and foundations
The DIESTA tube features a bimetallic construction with an aluminum sleeve fully covering the carbon steel base tube. Advanced enhancement structures optimize both airside and tubeside heat transfer performance:
- Airside Enhancement: Aluminum fins with groove and dimple structures
- Tubeside Enhancement: Internal helical fin structure for improved heat transfer coefficient
- Mechanical Robustness: Qualified for fouling resistance, cleaning procedures, and mechanical strength equivalent to standard extruded finned tubes
Developed through collaboration between Wieland, TechnipFMC, and Kelvion, DIESTA technology maintains compliance with API 661 standards while delivering superior thermal performance.
DIESTA is an innovative finned tube technology designed specifically for air-cooled heat exchangers. It utilizes enhanced surfaces to improve plant efficiency and reduce construction costs while adhering to the robust design requirements of oil & gas industry standards, such as API 661.
DIESTA finned tubes are primarily used in LNG air-cooler fields, including MR compressor inter- and aftercoolers, refrigerant coolers (desuperheater, condenser, and subcooler). They are also applicable in ethylene quench-water air cooler fields (especially naphtha-based crackers), gas processing plants, gas compression stations, and refineries. They are suitable for both greenfield and revamp debottlenecking projects.
Depending on the project objectives, benefits include: CAPEX savings with up to 20% reduction in air-cooler field length, increased revenue with up to 3% capacity increase in LNG applications, and improved CO₂ footprint through system efficiency enhancement.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.