Adsorbus GmbH has presented its heatChiller adsorption cooling system, designed for cooling capacities from 10 kW (approximately 34,100 BTU/h) to 3 MW (approximately 10.24 million BTU/h). The system uses heat from temperatures as low as 50 °C (122 °F) to produce chilled water down to 6 °C (42.8 °F), enabling the use of available waste heat for cooling data centres, buildings and industrial processes.
The heatChiller uses water (R718) as a natural refrigerant with a global warming potential (GWP) of zero and requires no PFAS-based refrigerants. Its thermally driven adsorption process operates under vacuum without a large refrigerant compressor. According to Adsorbus, the system can reduce annual electricity consumption for cooling by up to 80% compared with conventional compression cooling while also reducing electrical peak loads.
Technical specifications include a maximum cooling water inlet temperature of 35 °C (95 °F), a thermal coefficient of performance (COP) between 0.4 and 0.7, and an energy efficiency ratio (EER) above 50 for the adsorber module. The manufacturer also highlights quiet operation, reduced maintenance requirements and extended service intervals.
The system combines project-specific heat exchanger sizing with standardized adsorber modules. Cooling capacity can be provided by a single unit or several heatChillers operating in a cascade. Configuration parameters include temperature profiles, operating hours, load characteristics, redundancy requirements and hydraulic and electrical interfaces.
Adsorbus offers three operating configurations: base-load cooling supported by an existing compression chiller, hybrid systems integrating compression cooling and storage, and complete cooling supply under suitable operating conditions. The heatChiller can be installed in plant rooms, supplied as a pre-assembled container solution with hydraulics and controls, or configured for outdoor installation on request.
