At 3P Tech Serv, we deliver specialist heat exchanger mechanical design and engineering services — combining deep process knowledge with rigorous code compliance to support manufacturers, OEMs, and EPCs at every stage of exchanger design and verification.
Thermal Design Services for Heat Exchangers
Our thermal design services for heat exchangers cover the full scope of heat transfer engineering — from initial process duty specification and fluid property definition through to detailed sizing and performance verification. We evaluate shell-side and tube-side thermal performance, assess fouling allowances, and optimise exchanger geometry to meet your process duty within the mechanical constraints of your design. Our process heat transfer calculation services ensure every thermal design is backed by rigorous, documented analysis.
Heat Exchanger Rating Calculation
Our heat exchanger rating calculation services assess the thermal and hydraulic performance of existing or proposed exchangers against the specified process duty. Whether you are checking a vendor-supplied design, verifying an in-house sizing, or evaluating an exchanger for a revised service, we provide clear, accurate rating calculations that confirm whether your equipment will perform as required under all operating conditions.
TEMA Design Services
Our TEMA design services ensure that shell and tube heat exchangers are designed and documented in full accordance with TEMA standards — covering exchanger class selection, mechanical design requirements, nozzle sizing, baffle design, and clearance tolerances. We apply TEMA R, C, and B classifications as appropriate to your service conditions, providing a complete mechanical design package that aligns with both process requirements and fabrication constraints.
Exchanger Mechanical Design Calculation
Our exchanger mechanical design calculation services cover all pressure-containing components of shell and tube heat exchangers — including shells, heads, channels, nozzles, and flanges. Performed in accordance with ASME VIII Div 1 and TEMA requirements, our calculations address design pressure and temperature, hydrotest conditions, and nozzle reinforcement — providing a complete, code-compliant mechanical design package ready for fabrication or third-party review.
Exchanger Tube Sheet Design Services
Tube sheet design is one of the most technically demanding aspects of heat exchanger engineering, and our exchanger tube sheet design services address this with precision. We perform tube sheet thickness calculations for fixed, floating, and U-tube configurations in accordance with ASME VIII Div 1 and TEMA standards — accounting for differential thermal expansion, tube-to-tube sheet joint loads, and shell and channel pressure combinations to ensure a robust, code-compliant design.
Condenser Mechanical Design Services
Our condenser mechanical design services cover the full mechanical engineering scope for surface condensers and process condensers used in power, refinery, and chemical plant applications. From thermal design services for heat exchangers and process heat transfer calculation services through to detailed mechanical design calculations and TEMA documentation, we provide a complete engineering package tailored to the specific demands of condensing duty — including vacuum service considerations and large shell design requirements.
Process Heat Transfer Calculation Services
Our process heat transfer calculation services support the full range of heat exchanger types and configurations — shell and tube, double pipe, air coolers, and more. We perform detailed heat and mass balance calculations, overall heat transfer coefficient assessments, LMTD and effectiveness-NTU analyses, and pressure drop evaluations — giving you the rigorous thermal foundation needed to underpin your mechanical design and procurement decisions.