Reliable Heat Exchanger Engineering for Efficient Thermal Performance
At Destech Engineering Pvt. Ltd., we provide comprehensive heat exchanger design and engineering services for the oil & gas, petrochemical, chemical processing, power generation, gas compression, and industrial manufacturing sectors.
A properly engineered heat exchanger must deliver the required thermal duty while safely withstanding pressure, temperature, piping loads, vibration, corrosion, transportation, and operating conditions. Our multidisciplinary approach combines mechanical engineering, pressure vessel design, piping coordination, structural design, and 3D modelling to develop practical, code-compliant, and fabrication-ready solutions.
From reviewing process and thermal datasheets to preparing detailed calculations, 3D models, fabrication drawings, and bills of materials, Destech Engineering provides dependable heat exchanger engineering support throughout the project lifecycle.
Types of heat Exchangers We Design
List of Heat Exchangers We designed
| Equipment | Type | Diameter | Shell Length | Position |
|---|---|---|---|---|
| Gas Cooler | BEM | 16 in OD | 5780 mm | Horizontal |
| Refrigerant Vaporizer | BEM | 16 in OD | 4730 mm | Horizontal |
| Refrigerant Vaporizer | BEM | 8 in OD | 1915 mm | Horizontal |
| Re-Evaporator | NEN | 610 mm ID | 2370 mm | Horizontal |
| Solvent Chiller | AEL | 1900 mm ID | 4560 mm | Horizontal |
| Auto Purger | — | 600 mm ID | 780 mm | Horizontal |
| Acid Gas Chiller | NKN | 970 mm ID | 2700 mm | Horizontal |
| Economizer | NEN | 1075 mm ID | 5970 mm | Horizontal |
Some of our Heat Exchangers We Designed
Codes and Standards We Follow
Our heat exchanger designs are developed in accordance with applicable codes, standards, client specifications, and project requirements, including:
- ASME Boiler and Pressure Vessel Code Section VIII, Division 1
- ASME Boiler and Pressure Vessel Code Section VIII, Division 2
- ASME Section II – Materials
- ASME Section V – Non-Destructive Examination
- ASME Section IX – Welding Qualifications
- TEMA Standards
- ASME B16 Series
- API Standards, where applicable
- Client and project-specific specifications
The final code basis is selected according to the equipment type, project location, operating conditions, and client requirements.
Our Heat Exchanger Engineering Services
Mechanical Design
Our engineers perform detailed mechanical design calculations to determine the required thicknesses, materials, dimensions, reinforcement requirements, and structural configuration of the heat exchanger.
Thermal Design Review
Where thermal design information is supplied by the client, process engineer, vendor, or thermal specialist, we review the input data to ensure that the mechanical design is properly coordinated with the required thermal performance.
Shell-and-Tube Heat Exchanger Design
We provide mechanical engineering and detailing support for shell-and-tube heat exchangers manufactured in accordance with applicable ASME, TEMA, and project requirements.
Air-Cooled Heat Exchanger Engineering
We provide engineering design and detailing support for air-cooled heat exchangers used as gas coolers, oil coolers, condensers, and aftercoolers. Where fan, motor, tube bundle, or thermal-performance data is supplied by specialist vendors, we integrate the equipment into the overall exchanger arrangement and supporting structure.
Our Engineering Scope
Tubesheet Design
- Tubesheet thickness calculations
- Tube-hole layout coordination
- Ligament efficiency evaluation
- Gasket seating checks
- Operating load checks
- Differential pressure evaluation
- Thermal expansion assessment
- Tube-to-tubesheet joint review
- Stationary and floating tubesheet design
- Fixed tubesheet interaction assessment
Nozzle Design and Orientation
- Process nozzle orientation
- Utility nozzle arrangement
- Vent and drain nozzle locations
- Instrument nozzle locations
- Nozzle reinforcement calculations
- Flange selection
- Piping load coordination
- Internal clearance review
- Maintenance and bundle-removal clearance
- Nozzle schedule preparation
Structural and Local Load Evaluation
- Nozzle piping loads
- Saddle loads
- Support reactions
- Wind loading
- Seismic loading
- Lifting loads
- Transportation loads
- Local shell stresses
- Structural deformation
- Anchor reactions
- Equipment load transfer
Heat Exchanger Fabrication Drawings
- General Arrangement Drawings
- Fabrication Drawings
- Tubesheet Drawings
- Tube Layout Drawings
- Channel and Bonnet Details
- Shell Details
- Nozzle Orientation Drawings
- Baffle Drawings
- Pass Partition Details
- Lifting Detail Drawings
- Nameplate Details
Our Typical Deliverables
Our heat exchanger engineering package may include:
- Mechanical Design Calculation
- Equipment Datasheet Review
- GA Drawings
- Fabrication Drawings
- Assembly Drawings
- Tubesheet Drawing
- Tube Layout Drawings
- Nozzle Orientation drawing
- Support Detail Drawings
- Lifting Arrangement Drawings
- Static & Dynamic Analysis Reports
- Bill of Materials (BOM)
- Material Take-Off (MTO)
- COG Report
- Weight Reports
- As-Built Documentation