Tubular Exhaust Gas Heat Exchangers For Caterpillar CHP Engines

Caterpillar gas engines are among the most widely used prime movers in combined heat and power (CHP) applications. Their high exhaust temperature and large flue gas volume provide significant heat recovery potential.

Our tubular exhaust gas heat exchangers are specifically designed for Caterpillar CHP engines to capture waste heat from exhaust gases and convert it into usable thermal energy-improving plant efficiency and reducing operating costs.

 

Compatible with Major Caterpillar Engine Models

We design and supply tubular heat exchangers that match the thermal and mechanical requirements of a wide range of Caterpillar gas engines, including:

• CAT G3306 / G3308 / G3311 / G3412
• CAT G3508 / G3512 / G3520
• CAT CG132 / CG170 / CG260 series
• CAT G3606 / G3612 / G3616

All Caterpillar natural gas, biogas, landfill gas, and syngas engines

Custom solutions are available for any Caterpillar CHP unit, from small industrial plants to large utility-scale systems.

 

High-Efficiency Tubular Heat Exchanger Design

Our exhaust gas heat exchangers use a shell-and-tube construction optimized for high-temperature engine exhaust. Key features include:

1. Heavy-Duty Tube Bundle

Stainless steel 304/316/321 or Inconel tubes

Straight or U-tube configuration

Optional high-efficiency finned tubes

Designed to handle continuous operation at 400–600°C exhaust temperatures.

 

2. High Corrosion Resistance

Caterpillar engines running on biogas, sewage gas, or landfill gas can produce corrosive exhaust. We offer:

Acid-resistant stainless steels

High-alloy tubes for aggressive environments

Corrosion-resistant tube sheets and gaskets

Proper condensate drainage design

These features extend operating life and reduce maintenance downtime.

 

3. Optimized Heat Recovery

Our exchangers deliver stable and efficient thermal output for:

Hot water production (70–95°C)

District heating networks

Thermal oil systems

Low-pressure steam generation

Process heat for industry

Heat recovery can improve total CHP efficiency to 85–90%.

What We Need to Size Your Heat Exchanger

To design the correct unit for your CAT engine, we typically require:

Exhaust gas flow rate and temperature

Allowed exhaust backpressure

Fuel type (natural gas, biogas, sewage gas, etc.)

Desired outlet water/thermal oil temperature

Water or glycol flow rate

Installation orientation (horizontal or vertical)

Providing these details ensures optimal thermal and mechanical performance.