CFD
Computational fluid dynamics of the air inlet and discharge paths, nearby obstructions and recirculation for cooler banks and tight installations.
Analysis & verification
Understand The Conditions. Verify The Solution.
Structural Analysis
Finite element evaluation of frames, casings and support arrangements under wind, seismic, transport and operating loads.
Testing & Verification
Dimensional and interface checks, pressure and leak tests of every circuit, fan and electrical function tests, and performance or acoustic verification where specified.
CFD and FEA images are illustrative; project studies are delivered with the model assumptions, load cases and results for the specific equipment.
01
Define
Duty, ambient and system interfaces
02
Evaluate
Thermal design, airflow and structure
03
Integrate
Layout, materials and connections
04
Verify
Agreed checks, acceptance criteria and records
Engineering
Every Requirement Shapes The Design
Thermal duty is only the starting point. Installation, materials, airflow and sound are solved together.
Design software
Every Unit Is Sized With TECS's Own Thermal Design Software
Coil geometry, fin pitch, rows and passes, fan selection and sound level are solved together against the duty and the site ambient. The same tool draws the datasheet sketch and the general arrangement drawing, so the drawing you receive is the unit that was calculated.
Design Criteria
The design starts with the customer's expectations, the thermal duty, the fluid conditions and the operating environment. Site restrictions and project obligations are reviewed with the technical requirements.
Dimensions & Layout
Heat exchange area, overall dimensions and fan arrangement are selected for the heat load and the ambient. Transport limits, support points and maintenance access define the layout.
Materials & Protection
Tube and fin materials, fin coating, casing material and paint are chosen for the site atmosphere: dusty, marine, offshore and other demanding conditions.
Fans & Sound
Fan and motor selection follows the airflow, the pressure drop and the ambient temperature; the sound limit is evaluated at the same stage. Speed control, fan diffusers and silencers are offered where needed.
System Integration
Expansion tanks, level switches, control panels, oil and fuel coolers and plate heat exchangers are considered with the main exchanger for one coordinated system.
CFD & Structural Analysis
Where the installation requires it, CFD studies of airflow and recirculation and structural analysis of frames and supports verify the equipment under the project loads.
Design rules
The Limits Every TECS Design Is Checked Against
These checks are built into the TECS design software; a design that fails one of them is not offered.
Site Conditions
Design ambient temperature, altitude and humidity as given in the enquiry; fan performance corrected to the site air density, not taken from the catalogue at sea level.
Coolant
Water or ethylene / propylene glycol mixtures with the properties of the actual mixture. The coolant pressure drop is checked against the engine manufacturer's allowable figure, headers and nozzles against velocity limits.
Tube Velocity
The coolant velocity in every circuit is kept inside the band that gives high heat transfer and protects the tube wall from erosion.
Fin Pitch
Selected for the duty and the site: denser for clean sites, wider for dusty sites and for coils that must stay clean between services.
Fans
EC and AC axial fans, 50 or 60 Hz, induced or forced draught; the coil length per fan and the fan count follow the airflow, with a reserve on the fan performance.
Sound
Sound power from the fan manufacturer's measurements, sound pressure at the specified distances from an enveloping-surface calculation, with a safety margin against the limit.
Corrosion
Materials and coatings specified to the corrosion category of the site (C3 to C5-M): Cu/Al, AlMg2.5 fins, epoxy-coated fins, galvanised or painted casings, stainless-steel tanks.
Envelope And Weight
Overall length, width and height, dry and filled weight, coolant charge and expansion volume are calculated for every unit and stated on the datasheet and the drawing.
