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Article | REF: BE9738 V1

Absorption chillers and heat pumps- ammonia-water systems. Technology

Authors: Francis MEUNIER, Pierre Neveu

Publication date: March 10, 2022 | Lire en français

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    6. Conclusion

    Ammonia-water absorption machines are reliable and robust, and can withstand both hot and cold climates.

    In a context of environmental concerns, these machines offer a number of advantages:

    • they do not affect the ozone layer;

    • the global warming potential (GWP) of ammonia is zero.

    As ammonia is a toxic and slightly flammable fluid, units containing more than 2.5 kg of ammonia are subject to rules governing their installation in establishments open to the public. Air-source heat pumps with an output of less than 70 kW (containing less than 11 kg of ammonia) must be located in the open air, while ground-source heat pumps may be located indoors in an area with authorized access only. Higher-powered industrial refrigeration units must comply with standard...

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