The technology offer relates to an alternative cooling technology that uses waste heat as driving force instead of electricity to generate cold.
Today,. the majority of air conditioners are compression-based machines that needs electricity as energy source. Thus, more than 10% (2100 TWh) of the global electricity is used only for cooling. This number will triple until 2050, resulting in a higher energy consumption for cooling than for heating in future.
With adsorption-based cooling, it is possible to use heat as driving force to run the chiller. By that, up to 60% of the electrical energy normally used for cooling can be saved and replaced by thermal (waste) heat from e.g. solar thermal collectors, data center or other industrial processes.
Description of the technology
Adsorption based chiller and especially those, using MOFs as adsorbent, offer several advantages compared to compression-based chiller but also compared to adsorption chillers using other materials like silica gel or zeolites.
Advantage of MOF compared to silica gel or zeolite-based adsorption chiller:
The main advantage of MOF based adsorption chiller is the high volume specific cooling power of VSPC(peak)=430 W/L and VSCP(Average)=100 W/L based on the volume of a MOF coated heat exchanger. The COP is up to factor 2 higher compared to silica gel-based machines and the regeneration temperature of MOF containing devices can be as low as 55°C, where silica gel and zeolites are only difficult to be regenerated. Especially the low regeneration temperature offers the chance to utilize low temperature waste heat for chilling, which is otherwise dissipated to the environment.
Advantage of adsorption chiller compared to compression chiller:
Compared to compression-based chillers, adsorptive ones use thermal energy as driving force which leads to savings of up to 60% in electrical energy consumption. In addition, water is used as a green refrigerant with no global warming potential with does not fall under the F-gas regulation of European Union, which will phase down the use of fluorinated refrigerants to 20% by 2030.
Current development status
Materials: Commercially available (TRL 9)
Application: laboratory prototype (TRL 4/5)
Cooling applications, e.g. of residential, commercial and industrial buildings.
Desired business relationship