Belt-Guard Compressed Air Aftercooler — No Fan Motor Required

The Thermal Transfer Products M Series is a rugged, compact belt-guard compressed air aftercooler for reciprocating (piston) compressors. It mounts directly to the compressor’s belt guard and uses the free airflow generated by the belt-driven flywheel to cool the compressed air — so no separate fan motor, electrical connection, or cooling water is required. That makes it one of the simplest, lowest-cost ways to add aftercooling to a belt-driven compressor.

By cooling the hot discharge air, the M Series condenses moisture out of the compressed air stream and lowers downstream temperatures, protecting tools, piping, and dryers. Each cooler is built from either round copper-tube-and-fin or brazed aluminum bar-and-plate construction, and its lightweight design makes for a quick, simple installation on the existing belt guard.

The series is offered in seven models with capacities from 20 to 100 SCFM (0.57–2.83 SCMM), suited to belt-driven piston compressors, reciprocating shop compressors, portable compressors, and smaller industrial air systems. For higher-capacity, heavier-duty belt-guard aftercooling, TTP’s BGA Series is the brazed-aluminum step up.

Consult catalog for additional sizes and technical information.

Belt Guard Compressed Air Aftercooler — Brazed Aluminum, No Fan Motor Required

The Thermal Transfer Products BGA Series is a rugged, compact compressed air aftercooler built on a brazed aluminum bar-and-plate core for high performance and excellent heat recovery. It’s designed to mount directly to the belt guard of a reciprocating (piston) air compressor, using the free airflow from the compressor’s belt-driven flywheel fan to cool the compressed air — so no separate fan or fan motor is required. That makes it a simple, low-cost, energy-free way to add aftercooling to a reciprocating compressor.

By cooling the hot discharge air, the BGA condenses moisture out of the compressed air stream and lowers downstream temperatures, protecting tools, piping, and dryers. The all-aluminum core is lightweight and easy to install, and heat-exchanger models are also offered in round copper-tube-and-fin construction depending on the application.

BGA aftercoolers are rated at a maximum pressure drop of 3 PSI or less across all models (ratings based on a 250°F inlet temperature, 100 PSIG, and 500 FPM ambient-side air face velocity). For lower-capacity belt-guard cooling, TTP’s M Series covers 20–100 SCFM without a fan motor. Application engineers can help size the right belt-guard aftercooler for your compressor.

Consult catalog for additional sizes and technical information.

Air-Cooled Compressed Air Aftercooler — Bar & Plate Aluminum, Vertical or Horizontal Airflow

The Thermal Transfer Products AHP/AHPH Series is a high-performance air-cooled aftercooler purpose-built for cooling compressed air. Its rugged, heavy-duty bar-and-plate aluminum core is optimized for high airflow, low pressure drop, and maximum heat transfer, and its energy-efficient design also makes it well suited to heat-recovery applications. Both models carry a durable black powder-coat finish and are backed by downloadable 3D CAD models, technical documentation, and application engineering support to simplify OEM integration.

The AHP is the vertical-airflow version, discharging hot air up and away from operators, with detachable legs (shipped unattached) for floor or suspension mounting. It includes nine models with flow capacities from 125 to 4,800 SCFM (3.5–135.9 SCMM), sized for compressors from 60 to 700 HP (45–520 kW).

The AHPH is the horizontal-airflow version with fixed mounting feet, for installations where side-discharge suits the layout better. It includes six models with flow capacities from 30 to 2,800 SCFM (1–80 SCMM), sized for compressors from 60 to 400 HP (45–298 kW). Fan options include electric TEFC and air-motor drives. The AHP/AHPH Series is the current replacement for the obsolete UPA and AA aftercooler lines — crossover information is in the AHP/AHPH brochure. TTP’s XSelector^® sizing program helps select the right model for your airflow and compressor.

UPA and AA are obsolete.

For the crossover information, please refer to page 3 in the AHP/AHPH series brochure.

Consult catalog for additional sizes and technical information.

Combination Air-Cooled Oil Cooler & Compressed Air Aftercooler for Rotary Screw Compressors

The Thermal Transfer Products ACOC/ACOCH Series is a combination air-cooled oil cooler and compressed air aftercooler engineered specifically for rotary screw air compressors. In a single, compact, side-by-side brazed aluminum bar-and-plate core, it handles two jobs at once — cooling compressor lubricating oil and cooling compressed air — so you don’t need separate heat exchangers.

The all-aluminum design is lightweight, corrosion-resistant, and easy to mount, with detachable legs on the ACOC and fixed mounting feet on the ACOCH. That makes the series ideal for converting water-cooled compressor cooling systems to air-cooled, retrofitting existing units in the field, fitting into space-constrained equipment rooms, and mounting in remote locations. Switching from water-cooled to air-cooled cooling eliminates ongoing water and sewer costs and the corrosion and scaling problems common to water-cooled heat exchangers, and the vertical airflow works well for heat-recovery applications.

The ACOC/ACOCH Series includes fifteen models with air flow capacities from 175 to 1,800 SCFM (4.96–50.97 SCMM), sized for rotary screw compressors from 15 to 360 HP (11.2–268.5 kW). Application engineers can help you select and size the right model for your compressor and operating conditions.

Consult catalog for additional sizes and technical information.

The Thermal Transfer Products AB Series is a high-performance, water-cooled compressed air aftercooler that uses supplied cooling water to cool compressed air or gas discharged from piston (reciprocating) compressors. By dropping the temperature of the hot discharge air, it condenses moisture out of the compressed air stream and protects downstream piping, tools, and dryers.

The AB uses a shell-and-tube design built with round copper tubes, so the air-side tube bundle can be easily removed, cleaned, and maintained — a key advantage in dirty or oily compressed-air service where finned or plate coolers foul and can’t be cleaned. The brass hub-and-shell construction protects against galvanic and other forms of corrosion, extending service life in water-side environments. The design can also be dismantled for cleaning or repair, and capacity can be increased by adding plates in pairs.

The series includes ten models with flow capacities from 40 to 3,170 SCFM (1.1–89.8 SCMM), suitable for both piston and rotary screw compressors, with a maximum operating pressure of 250 PSI and a maximum operating temperature of 350°F. TTP’s XSelector^® sizing program — available online and as a mobile app — helps select the right model for your airflow, inlet temperature, and cooling-water conditions.