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Analyse théorique et expérimentale de l'échangeur de chaleur d'un caloduc utilisant le HFC-125a comme fluide actif.

Experimental and theoretical analysis of a heat pipe heat exchanger using HFC-152a as working fluid.

Numéro : pap. n. 270

Auteurs : RIGHETTI G., MANCIN S., ZILIO C., et al.

Résumé

In the present paper the experimental and theoretical analyses of a 6-row Heat Pipe Finned Heat Exchanger (HPFHE) are reported. By means of a double wind channel the experimental tests were run under the operating conditions typical for air-conditioning in European countries for both the summer and the winter seasons. To evaluate the HPFHE performance as a function of the refrigerant loaded in the heat pipes, different potential fluids were analysed in terms of figure of merit number. Accordingly three different fluids were chosen and experimentally tested: the well-known and commonly used HFC-134a, the new low Global Warming Potential (GWP) HFO-1234ze(E), and the HFC-152a which presents a figure of merit number approximately 63 % greater than that of HFC-134a at 10°C. HFC-152a was demonstrated to outperform the other refrigerants. The consistency of the experimental results is proved by a comparison with a semi-empirical model of the HPFHE based on heat transfer correlations available in the open literature.

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Pages : 8 p.

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Détails

  • Titre original : Experimental and theoretical analysis of a heat pipe heat exchanger using HFC-152a as working fluid.
  • Identifiant de la fiche : 30016067
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0270

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