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Variable cooling capacity at diffusion absorption refrigerators, thermally driven by solar energy.

Number: 1180

Author(s) : PENKOVA N., STOYANOV Y.

Summary

The advantage of the diffusion absorption refrigerators (DAR) is that they can be thermally driven by waste heat or solar energy, without electricity consumption. This allows cooling at a low carbon footprint, reduced to the embodied energy and carbon dioxide at the production, maintenance and recycling of the installations. For the solar cooling, the heat required for boiling and movement of the binary solution in DAR, is obtained by converting the solar energy in solar collectors. The change of the solar irradiation during the day is resulting in a variable power input in the generator and subsequent changeable cooling capacity of DAR if there is no additional heat source. An experimental analysis of a laboratory DAR at variable heat supply was carried out to analyze the limits of these changes. The variation of the cooling capacity and the coefficient of performance of the refrigerator with the energy input have been established. On this basis, the possibilities for cooling by a DAR based solar system in Sofia were investigated and proved. The developed computational approach can be applied at different climates and cooling capacities.

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Pages: 11p.

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Details

  • Original title: Variable cooling capacity at diffusion absorption refrigerators, thermally driven by solar energy.
  • Record ID : 30034211
  • Languages: English
  • Subject: Technology
  • Source: 1st IIR International Conference on Refrigeration Adapting to Rising Temperatures
  • Publication date: 2025/08
  • DOI: http://dx.doi.org/10.18462/iir.adaptation.2024.1180

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