Research and development continue - market maturity as yet unknown
The cascade heat pump for high temperatures (KWP) developed by ventury GmbH ventury GmbH is currently undergoing a multi-year long-term test under real conditions. It is intended to serve as a CO2-neutral heat supplier for large buildings or commercial processes without requiring a core refurbishment of the current heating system. In test operation in a local heating network with constant heat consumption, over 600 megawatt hours of heat have already been generated. The pilot project provides important findings for the further development of the KWP.
Efficient heat supply at high temperatures
The innovative air-to-water heat pump system works with two refrigerant circuits connected in series, which in combination achieve flow temperatures of up to 90°C. This technology is intended to be a long-term solution for commercial applications that require high temperatures of over 100°C as process heat.
Testing under real conditions shows initial results
The high-temperature heat pump is being tested as a prototype under real climatic conditions in Germany.The system provides interesting data and shows potential, but there are still many open issues, such as the sustainable transformation of the refrigerant pairing and the optimization of the housing design and process control, which is more complicated in two-stage systems than in single-stage processes, before series production can be considered.
Long-term research for future applications
With a heating capacity of up to 120 kW per compressor line using A3 refrigerants, the heat pump could be a sustainable solution for companies that need to provide high temperatures efficiently but rely on ambient air as a heat source. The data currently being collected is essential for optimizing the system, but it remains to be seen what, above all, safety-related adjustments are necessary before a practical version can be developed.