01 / Compact heat exchange layout
V-type radiators combine two inclined coils under a common row of top-mounted fans. The arrangement carries large capacities on a short footprint and suits power plants, data centers and chiller economiser circuits where many units stand side by side.
ApplicationsPower PlantsData CentersChiller Economisers
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Two coils inclined under a common row of fans give almost twice the heat exchange surface of a flat unit on the same ground area. V-type units are therefore chosen where many units stand side by side and ground is expensive: power plants, data centers and chiller economiser circuits.
The coil angle, the fin pitch and the number of fans are solved together for the duty and the site ambient. Every unit is sized so that the two coils share the airflow evenly and the fans draw through both at the required face velocity; the design checks the air recirculation between neighbouring units in a bank.
EC fans with integrated speed control are the usual choice: at part load and at night they run slower, which saves power and lowers the sound level. AC fans with external speed control are available where the site specification asks for them.
A common galvanised or painted steel frame carries both coils, the fan deck, the headers and the junction boxes, with lifting points for the crane. Flanged connections, expansion tank, level switch and control panel are fitted at the factory, so the unit is connected and started on site in a short time.
02 / Remote heat rejection
Horizontal radiators reject the heat of engines, cogeneration circuits and processes to ambient air where the equipment must be positioned away from the heat source. Each unit is sized for its duty: heat exchange surface, fan quantity, airflow and sound level are selected together for the required capacity and the design ambient.
ApplicationsPower GenerationCogenerationPower PlantsData CentersChiller Economisers
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The coil is built from TECS finned-tube geometry: copper tubes expanded into aluminium fins, with the fin pitch chosen for the duty and the site. Dusty sites get a wider pitch so the coil stays clean; clean sites get a denser pitch and a shorter unit. Rows, passes and circuiting are selected so that the coolant pressure drop stays inside the engine manufacturer's limit while the heat transfer stays high.
The number of fans, their diameter and the finned length per fan follow the airflow the coil needs at the design ambient. Induced-draught units carry the fans above the coil and draw the air through it; forced-draught (pusher) units blow through the coil with the fans underneath and the motors in cooler air. Fan performance is taken at the site air density, so a unit for a high-altitude site is sized for the thinner air it will actually move.
The sound power of the delivered fans, the number of fans and the distance to the receiver give the sound pressure level at the distances the enquiry asks for. A safety margin is held between the calculated level and the limit. When the limit is tight, lower fan speeds, more fans at lower speed, EC fans with speed control or acoustic diffusers bring the unit inside the limit.
Copper tube with aluminium fin is standard. For coastal, offshore, desert and chemical atmospheres the fins are AlMg2.5 or epoxy coated and the casing is hot-dip galvanised or painted to the corrosion category of the site, up to C5-M. Expansion tanks are stainless steel SS304L or SS316L.
03 / Electric fan configurations
Vertical remote radiators move the cooling duty away from the engine when the engine room, the noise limit or the plant layout does not allow an engine-mounted radiator. The coil stands upright and the electric fans blow or draw the air horizontally, so the unit fits against a wall, a louvre or a duct.
ApplicationsPower GenerationPower Plants
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A vertical remote radiator takes the engine cooling duty out of the engine room. It stands against a louvre, in a duct or in the open, and its electric fans are independent of the engine, so the engine room stays quieter and cooler and the radiator can be placed where the air is.
Each unit is sized with the TECS design software for the heat rejection, flow rate and inlet/outlet temperatures given by the engine manufacturer. Single-circuit units cool one jacket-water loop; LT/HT units carry the low-temperature (charge air, oil) and high-temperature (jacket water) circuits in one casing with separate headers and connections. The fin pitch, rows and circuiting are chosen so both circuits meet their temperatures at the design ambient without exceeding the allowable pressure drop.
One to eight EC or AC axial fans per unit, selected for the airflow, the external pressure of ducts and louvres, the ambient temperature and the sound limit. Motors are specified to the site supply (50 or 60 Hz, IP class, insulation class), wired to a junction box or a control panel with isolators and, where requested, speed control.
Units are delivered as one factory-tested assembly: coil, casing, fans, guards, expansion tank and pipe connections. Lifting points, support frames and anti-vibration mounts are defined with the installation; flanged or grooved connections are placed to suit the pipe routes of the site.
04 / Engine-driven cooling
Mechanical driven radiators take their fan power from the engine crankshaft through a belt drive or a shaft. They are the compact, self-contained cooling solution for generator sets where no electric fan power is wanted and the radiator sits in front of the engine.
ApplicationsPower Generation
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A mechanical driven radiator is the self-contained cooling solution for a generator set: the fan is driven by the engine through a belt or a shaft, no electric fan power is needed and the radiator stands in front of the engine on the same base frame or on its own frame.
The package is designed for the engine manufacturer's heat rejection, coolant flow and allowable pressure drop. Single-circuit and LT/HT cores are built from the TECS finned-tube geometry; where the engine needs them, charge-air, oil and fuel cooler sections are integrated in the same core and air stream.
The fan diameter, blade angle and speed are matched to the fan drive power the engine provides and to the airflow restriction of the installation: louvres, ducts, exhaust silencers and the engine itself all sit in the air path. Belt drive with tensioner or direct shaft drive, fan guards and flexible connections are part of the package.
The radiator is delivered as one assembly with its frame, fan, drive, guards, expansion tank, level switch and connections, pressure tested and ready for the generator set. Packages for container installations are matched to the container air inlet and outlet.
05 / Inlet air conditioning
The output and efficiency of a gas turbine follow the density of the inlet air. Heating coils protect the inlet against icing and improve part-load behaviour in winter; cooling coils recover output on hot days. TECS designs both for the inlet house geometry, the airflow and the air-side pressure drop the turbine allows.
ApplicationsGas Turbines
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A gas turbine breathes a fixed volume of air; its power follows the density of that air. On a hot day the output falls noticeably below the ISO rating, and in cold, humid weather the inlet can ice. Heating coils protect the inlet and improve part-load behaviour in winter; cooling coils recover output in summer.
The coil is designed for the inlet house geometry, the airflow and the air-side pressure drop the turbine can accept: every pascal lost at the inlet costs output. Face velocity, rows and fin pitch are selected for the duty with the lowest pressure drop; the fluid circuit (hot water, glycol or a heat-recovery loop) is matched to the plant.
Copper or stainless-steel tubes with aluminium, AlMg2.5 or epoxy-coated fins; galvanised or stainless-steel casing; drain pans and droplet eliminators where cooling below the dew point is expected. Access for cleaning and inspection is defined with the inlet system.
06 / Integrated solutions
Where the project asks for more than the heat exchanger, TECS supplies the heating module or pump skid that completes the circuit: pumps, three-way valves, expansion tank, instrumentation and pipework on one frame, factory assembled and pressure tested.
ApplicationsPower GenerationCogeneration
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Gas-engine power plants start and run their engines with pre-heated jacket water and recover heat from the LT and HT circuits. The heating module brings the pumps, control valves, heat exchangers, expansion tank and instrumentation of that circuit onto one skid, factory assembled and tested.
Pump sets with stand-by pumps, three-way control valves, plate or shell-and-tube heat exchangers, expansion tanks in SS304L or SS316L, level switches, thermometers, pressure gauges and the pipework between them. The control panel or junction box is wired on the skid. Skid frames and support structures for radiators and auxiliary equipment are built in the same workshop.
TECS designs the module around the engine manufacturer's circuit data and the plant layout, so the radiators and heating module arrive as one coordinated cooling system with matching connections.
Every unit is delivered with its technical datasheet, dimensional drawing, fan curve and acoustic data, the test records of the factory pressure and function tests, and the installation, operation and maintenance manual. General arrangement drawings in PDF and DXF are issued for the project engineering, and the datasheet states the design point the unit was calculated for.
Complementary equipment
Plate and shell-and-tube heat exchangers, oil and fuel coolers, tanks and controls are selected with the radiator, so the whole cooling circuit is delivered as one coordinated package.
Compact heat transfer between separate fluid circuits.
More info
Tube-bundle exchangers for the fluid conditions and the project duty.
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Fan-mounted oil and fuel coolers manufactured in our factory.
More info
SS304L / SS316L tanks sized for the circuit volume and temperature.
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Electrical interfaces for fans, isolation and project-specific controls.
More infoSend us the heat duty, the fluid temperatures and flow rates, the ambient conditions and the installation limits. We answer with a design proposal - or write to us on WhatsApp.
