Dry Coolers for ORC System optimization

In the context of growing needs for sustainable energy solutions, ThermoKey collaborated with Enogia, a French company specialized in the design of micro-turbomachinery and ORC (Organic Rankine Cycle) systems, to implement a dry cooling solution to enhance heat recovery efficiency in a biogas cogeneration plant.

To maximize the energy efficiency of a plant composed of three biogas cogeneration engines, Enogia installed a 100 kWe ORC module designed to convert the engines’ residual heat into electricity for local self-consumption.

To enhance performance and ensure optimal functioning of the ORC system, Enogia relied on ThermoKey to design a heat exchange system capable of dissipating approximately 1,350 kW of residual heat.

For this project, ThermoKey supplied a Super Power-J Dry Coolers — a high-efficiency heat exchanger with strong heat dissipation capacity, designed to handle a cooling fluid consisting of water with 30% glycol.

Thanks to its flexible structure and adaptability to different conditions, the supplied V-Type Dry Cooler was equipped with 14 EC fans of 1000 mm diameter. This configuration ensures high thermal performance, reduced electrical consumption, and low noise levels from the fans — a specific requirement due to the residential location of the installation site.

• Custom-made approach: the final configuration has been co-designed by the technical teams to best meet the specific requirements;
• Sustainability: the dry cooling solution, integrated into the waste heat recovery system, enables the implementation of a highly sustainable plant, reducing dependence on external energy sources and cutting CO₂ emissions;
• Efficiency: high-performance EC motors help ensure minimal acoustic impact.

The heat exchanger supplied by ThermoKey was selected for its reliability, configurability, and high performance in managing large thermal loads. The collaboration between ThermoKey and Enogia’s technical teams ensured the efficient integration of the cooling system within the ORC module.

This partnership highlights ThermoKey’s commitment to delivering advanced, tailor-made solutions that support sustainable development and the energy transition.