Zero Entropy

Overview

Zero Entropy ApS is a Danish climate-tech hardware company focused on improving the efficiency of heat pumps and refrigeration systems through energy recovery. The company develops and commercializes expander technology intended to reduce energy consumption by capturing work otherwise lost in the expansion process, with prototypes and planned demonstration installations. Their current prototype work explicitly uses CO₂ (R-744) as the working refrigerant.

Focus

Zero Entropy targets OEMs and system developers working with large heat pump and refrigeration applications, with an emphasis on efficiency gains (e.g., improved COP) via integration of a dedicated expander component. Their activities are positioned around R&D, prototyping, and field demonstrations as a pathway to wider deployment in heating and cooling markets serving commercial and industrial buildings.

The company is headquartered in Denmark and is primarily focused on the European market.

Scope and Products

• Develops expander (“power expander”) components designed to recover expansion losses in heat pump and refrigeration cycles.
• Builds and tests CO₂ (R-744) prototype systems incorporating the expander technology.
• Plans and supports demonstration installations to validate performance and enable commercial deployment.