Introduction
The document discusses the implementation of GEROtherm® horizontal heat exchangers by HakaGerodur for cooling industrial processes in the low temperature range. This initiative is driven by the need for environmental protection and energy efficiency amid rising raw material and energy costs.

Specifications
The GEROtherm® system utilizes free spaces as energetic heat exchanger surfaces, leveraging the sub-surface temperature and ambient coldness to cool production water. The system covers an area of 14,000m² and achieves a cooling load of 1,200–2,000 kW with a coefficient of performance (COP) between 80 and 135. The pumping power required is 15 kW.

Procedures
The installation involves laying earth collector pipes on a mineral substructure, connected to distribution systems and existing cooling systems. The system's efficiency is enhanced by replacing the collector covering with a special composite material.

Performance and Efficiency
The system's cooling performance averages 1,500 kW, outperforming conventional refrigeration by a factor of 25. It is expected to save over 450 tons of CO2 annually. The system's efficiency was proven during the 2006/2007 trial period, with investment costs expected to be amortized within two years.

Relevance and Impact
This pilot project is one of the largest geothermal heat exchanger systems in Germany for cooling production water. It demonstrates significant potential for energy savings and CO2 reduction, contributing to environmental protection efforts.

Conclusion
The GEROtherm® horizontal heat exchanger offers a modular solution adaptable to various technical requirements, providing a sustainable and efficient cooling method for industrial processes.