Engineering

Some plate & frame problems don't fit neatly into a sizing run. A unique fluid combination with unusual viscosity or fouling behavior, a tight footprint that rules out standard frame sizes, or a unit already installed and underperforming — these need a person, not just a calculation.

Our engineering team designs plate & frame exchangers directly for exactly these cases, working through the same thermal-hydraulic fundamentals behind our N-PHE software, but applying engineering judgment where a standard sizing algorithm would need manual override — non-standard chevron combinations, mixed-plate packs, or unusual port arrangements to fit an existing pipe layout.

We also handle troubleshooting on installed units: falling performance, excessive pressure drop, or premature fouling that a maintenance team can't diagnose on their own. Because we understand both the plate-side physics and the mechanical realities of frame assembly, we can trace a performance problem back to its actual cause — gasket degradation, flow maldistribution, or genuine undersizing — rather than guessing.

Typical engagements run from a single design review to full new-installation engineering, and we scope each one based on what's actually needed — a two-hour sanity check on someone else's design, or a complete specification built from your process data upward.

Welded Bloc exchangers are usually specified for a reason: a duty too aggressive, too hot, or too high-pressure for standard equipment. That means the design work upfront carries more weight than it would for a routine plate exchanger.

Our engineering team designs these units for exactly those edge cases — corrosive fluid compatibility across the wetted materials, pressure vessel design considerations, and welded-joint integrity verification — with direct engineering judgment applied wherever software alone isn't sufficient to certify a safety-critical design.

We work closely with fabricators during detailed design to make sure the welded construction is actually achievable at the specified plate thickness and material, not just theoretically correct on paper — a gap that causes real problems if it's discovered after fabrication has already started.

We also support the procurement conversation once design is complete — reviewing fabricator quotes against the specification to confirm what's actually being offered matches what was designed, since welded bloc fabrication quotes can vary significantly in scope and quality between suppliers.

Type 2 spiral configurations extend the same self-cleaning geometry to condensing and evaporating duties — phase-change service where a fluid changes state as it passes through the unit. The spiral’s continuous channel and induced turbulence help manage the changing flow characteristics that come with condensation or evaporation, in a footprint far smaller than a comparable shell and tube unit would need.

This makes Type 2 a strong fit for condenser and reboiler-type duties involving fouling or viscous fluids — combining the phase-change handling of specialized process equipment with the fouling resistance that makes spiral geometry valuable in the first place. Where Type 1 is chosen mainly for difficult fluids, Type 2 is chosen for difficult fluids and a phase change happening at the same time.

Our engineers design Type 2 units around both demands together: confirming the spiral geometry can handle the changing flow characteristics of condensation or evaporation, while still delivering the self-cleaning action the fluid’s fouling tendency requires — two constraints that have to be satisfied simultaneously, not traded off against each other.

This is where configuration choice matters most — Type 1 and Type 2 aren’t interchangeable, and defaulting to the wrong one because it was used on a similar-sounding project before is a common source of underperformance. For duties with unusual condensing or evaporating behavior, we assess your actual process data — and sometimes recommend a smaller trial — before finalizing a design, confirming the configuration will perform as expected before committing to full-scale fabrication.

Shell and Tube exchangers cover an enormous range of duties, and getting the configuration right — tube layout, baffle design, materials of construction — takes real engineering judgment, especially for non-standard or severe services.

Our engineers design and troubleshoot these units directly: new designs for unusual fluid combinations or space-constrained layouts, and diagnostic work on existing units suffering from vibration, fouling, or underperformance that a generic inspection hasn't been able to explain.

We apply the same TEMA-standard rigor as our software, but with the judgment to handle the cases software alone can't — vibration analysis for high-velocity shell-side flow, tube layout optimization for unusual nozzle placement, and root-cause diagnosis when an existing unit simply isn't performing as designed.

For vibration-sensitive designs — high shell-side velocities, long unsupported tube spans — we run dedicated vibration analysis beyond standard TEMA checks, since tube vibration failure is one of the more common and expensive shell-and-tube problems that standard sizing alone doesn't catch.

Feed Water Heater design involves more than a simple duty calculation — condensing zone sizing, drain cooling performance, and integration with the broader power cycle all affect whether the unit delivers its expected efficiency gain in practice.

Our engineers handle this level of detail directly: new installation design for plants adding feedwater heating capacity, and troubleshooting for units that are installed but underdelivering on the efficiency improvement they were specified to provide.

Because feedwater heater performance is easy to measure against expectation — the plant's overall heat rate either improves as predicted or it doesn't — this is an area where engineering accountability matters. We stand behind the design numbers we produce, not just the calculation methodology behind them.

We also review integration with the broader steam cycle — extraction pressure, drain routing, and cascading drain arrangements to other heaters in the train — since a feedwater heater rarely performs as an isolated piece of equipment.

Dry Coolers need careful sizing around your site's actual ambient conditions and seasonal extremes — oversizing wastes capital on unnecessary fan and coil capacity, while undersizing risks real performance shortfalls exactly when you need the cooling most, on the hottest days of the year.

Our engineers design around your specific site data — actual historical ambient temperature ranges, humidity where relevant, and site-specific factors like recirculation risk from nearby equipment — going beyond a standard design-day calculation whenever local conditions genuinely demand it.

This matters most for sites in climates with wide seasonal swings, where a design based on average conditions can leave a real gap in summer performance. We'd rather size conservatively and explain why than hand over a unit that struggles on the worst days of the year.

For sites with limited historical weather data, we can source and apply regional climate data to build a realistic design basis, rather than relying on a single conservative design-day number that may not reflect actual local conditions.