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Étude expérimentale du circuit auxiliaire de gaz d’un refroidisseur à diffusion-absorption avec une circulation naturelle et forcée.

Experimental investigation of the auxiliary gas circuit of a diffusion absorption chiller with natural and forced circulation.

Auteurs : SCHMID F., SPINDLER K.

Type d'article : Article, Article de la RIF

Résumé

The auxiliary gas circuit has a significant influence on the cooling capacity and the efficiency of a diffusion absorption chiller. Nevertheless, there are only a few theoretical studies and experimental investigations concerning this topic. The reason is the difficulty to gain measurement data of the volume flow rate and the partial pressures without affecting the natural circulation of the auxiliary gas circuit negatively.
This paper presents a detailed experimental investigation of the auxiliary gas circuit. The gas mixture in the circuit mainly consists of the vapour of the refrigerant (ammonia) and the inert gas (helium). A clamp-on ultrasonic flowmeter measures the volume flow rate of the gas mixture and the mole fraction of helium and ammonia continuously. The influence of an increasing volume flow on the mass transfer in the auxiliary gas circuit is shown by using a propeller to force the circulation of the gas mixture.

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Format PDF

Pages : 84-92

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Détails

  • Titre original : Experimental investigation of the auxiliary gas circuit of a diffusion absorption chiller with natural and forced circulation.
  • Identifiant de la fiche : 30018646
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 70
  • Date d'édition : 10/2016

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