Services
Mechanical strength calculations, pressure equipment design, technical consulting, and 7-step delivery workflow.
Explore AllMechanical, strength, and FEA simulations
ASME VIII Div.1, EN 13445, and TEMA compliance
Standards evaluation and technical reporting
End-to-end flow from inquiry to technical support
Pressure vessels, reactors, tanks, piping, and columns
ASME & EN compliant vessel and nozzle calculations
Thermal and mechanical optimized exchanger designs
Advanced structural, stress, and thermal simulations
Pressure, temperature, and corrosion allowance
Industries
Cross-disciplinary engineering solutions tailored to the dynamics and process conditions of diverse sectors.
Explore AllCustom machine design and structural stress verification
Process tanks, dye kettles, and heat recovery exchangers
Thermal, biomass, geothermal, and cogeneration plants
API 650 / API 620 storage tanks and refinery systems
Heavy industrial furnaces, cooling towers, and steel structures
Waste heat recovery and green energy integration
3D CAD modeling and innovative prototype development
End-to-end plant layout, piping flexibility, and layout design
Standards
Engineering standards guide fully compliant with ASME, EN, API, and TEMA international codes.
Explore AllPressure vessel mechanical sizing and FEA criteria
CE & PED 2014/68/EU compliant calculations
Welded storage tanks for petroleum and chemicals
Shell & tube heat exchanger thermal & mechanical sizing
About Us
10+ years of engineering experience, 3P philosophy, vision, mission, corporate values, and commitments.
Explore AllExpert engineering team founded on shared excellence
Precision, Performance, Professionalism + EN
Engineering beyond standards mindset
Reliability, technical excellence, and continuous growth
Our differentiators and engineering commitments
TEMA Standards
Class R, Class C, Class B (Shell & Tube Heat Exchangers)
TEMA Standards are the worldwide authority for the mechanical and thermal design of shell & tube heat exchangers. POLIEN Engineering delivers optimized heat exchanger solutions prioritizing maximum thermal efficiency, low pressure drop, and acoustic/fluid vibration prevention.
STANDARD EMBLEM
Design Criteria & Limits
Application Scope
- Refinery & Petrochemical Heat Recovery Exchangers
- Steam Surface Condensers and Reboilers
- Textile Dyehouse Waste Heat Recovery Systems
- Industrial Hydraulic and Lubricating Oil Coolers
Polien / Core Disciplines
Engineering Calculation Scope
TEMA Design Classes
TEMA Class R (Petroleum and refinery service), TEMA Class C (Commercial and general process applications), TEMA Class B (Chemical process services).
TEMA Exchanger Configurations
Fixed Tubesheet (BEM, AEM), U-Tube (BEU, AEU), and Floating Head (AES, BES) with differential thermal expansion analysis.
Flow-Induced Vibration Analysis
Acoustic resonance and vortex shedding evaluation to prevent tube fatigue failure; baffle spacing and impingement plate optimization.
Tubesheet Sizing & Tube-to-Tubesheet Joints
Bending and shear thickness calculations compliant with TEMA and ASME Section VIII Div.1 Part UHX; welded and expanded tube joints.
Polien / Deliverables