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Reduction of the electricity consumption of a compression refrigeration system for air conditioning by a preceding thermally driven absorptive air dehumidification system.

Number: 0859

Author(s) : MEYER T., RICART C.

Summary

The cooling of air implies a sensible and a latent load for temperature and humidity reduction, respectively. The part required for the condensation of moisture is usually significant or even dominant. The dehumidification of air in a thermally-driven open absorption (desiccant) system followed by its cooling in a conventional chiller bears the potential for a large reduction of the electrical consumption of the process.   
In this paper, a methodology is introduced to calculate the specific electrical energy consumption per kilogram of chilled air of a conventional and a hybrid system for air conditioning applications. Potential electricity savings depending on ambient conditions are investigated.
Open Absorption dehumidification systems working with low grade heat sources at around 85°C can save up around 80% of the electicity demand in warm and humid climates (𝜑 = 0.8). But even in less humid climates (𝜑 = 0.4) the potential for electrical energy savings is similarly high in between 65 and 70% almost independently from the ambient temperature. 

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Pages: 12

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Details

  • Original title: Reduction of the electricity consumption of a compression refrigeration system for air conditioning by a preceding thermally driven absorptive air dehumidification system.
  • Record ID : 30031885
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0859

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