Chillers & heat pumps
Adsorbus Unveils heatChiller: Modular Adsorption Chiller Tapping Waste Heat Down to 50 °C
Adsorbus GmbH has introduced the heatChiller, a modular adsorption cooling system that converts waste heat at temperatures as low as 50 °C into chilled water at 6 °C. The unit covers cooling capacities from 10 kW to 3 MW and uses water (R718) as a zero-GWP refrigerant.
Adsorbus GmbH has presented the heatChiller, a modular adsorption cooling system that turns low-grade waste heat into chilled water for data centres, commercial buildings and industrial processes. The platform spans cooling capacities from 10 kW (≈34,100 BTU/h) to 3 MW (≈10.24 million BTU/h) and can draw on heat sources as low as 50 °C (122 °F) to deliver chilled water down to 6 °C (42.8 °F).
How the system works
The heatChiller relies on a thermally driven adsorption cycle operating under vacuum, eliminating the need for a large refrigerant compressor. Water (R718) serves as the natural refrigerant, carrying a global warming potential of zero and requiring no PFAS-based refrigerants. According to Adsorbus, the system can cut annual electricity consumption for cooling by up to 80 % compared with conventional compression cooling while also reducing electrical peak loads. The manufacturer additionally highlights quiet operation, lower maintenance demands and extended service intervals.
Key technical parameters
- Maximum cooling-water inlet temperature: 35 °C (95 °F)
- Thermal coefficient of performance (COP): 0.4 – 0.7
- Energy efficiency ratio (EER) of the adsorber module: above 50
- Refrigerant: water (R718), GWP 0
- Operating principle: vacuum adsorption, no large compressor
Modularity and operating configurations
Cooling capacity is delivered through project-specific heat-exchanger sizing combined with standardized adsorber modules. A single heatChiller unit or several units in a cascade can meet the required load. Configuration parameters include temperature profiles, operating hours, load characteristics, redundancy requirements and hydraulic and electrical interfaces.
Adsorbus offers three operating modes:
- Base-load cooling supported by an existing compression chiller.
- Hybrid system integrating compression cooling with thermal storage.
- Complete cooling supply under suitable operating conditions.
Installation options range from conventional plant-room placement to a pre-assembled container solution with integrated hydraulics and controls, or outdoor installation on request.
Source: Refindustry.
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