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Experimental performance of a solid/gas thermochemical solar-cooling process.

Performances expérimentales d'un procédé thermochimique solide/gaz de rafraichissement solaire.

Author(s) : STITOU D., MAZET N., MAURAN S.

Type of article: Article

Summary

This paper focuses on the experimental performances of a solar air-conditioning pilot plant for housing, which is running in PROMES laboratory (Perpignan-Odeillo, France) since 2007. This pilot of daily cooling capacity of 20 kwh at SQC consists of a solid/gas thermochemical sorption process which is powered at 60 -80°C by 27 ml of flat plate solar collectors. The thermochemical sorption process is based on the coupling of a liquid/gas phase change of a refrigerant (NH3) and a reversible chemical reaction between a reactive solid (BaCl2) and this refrigerant. Its functioning mode is intrinsically discontinuous and cyclic. It is relevant for the storage or transformation of solar energy. An analysis of 2-years experimental working of the prototype leads to an averaged yearly efficiency of solar collectors and a process COP ranging respectively from 40 to 50% and 0.3 to 0.4. This prototype enables thus a daily cooling productivity at SQC of about 0.6 to 7.2 kwh of cold per ml of flate plate solar collector and leads to a global solar COP around 0.78. for the summer period (July and august) and 0.77 from April to September.

Details

  • Original title: Performances expérimentales d'un procédé thermochimique solide/gaz de rafraichissement solaire.
  • Record ID : 30010036
  • Languages: French
  • Source: Revue générale du Froid & du Conditionnement d'air - vol. 103 - n. 1138
  • Publication date: 2013/11

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