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Document IIF

Étude expérimentale sur l'ébullition libre d'une solution R600a/huile minérale.

Experimental investigation on pool boiling of R600a/mineral oil solution.

Numéro : pap. ID86

Auteurs : CHEN G. M., ZHELEZNY V. P., SHESTOPALOV K. O., et al.

Résumé

The aim of the present study is an experimental investigation of mineral compressor oil (ISO VG 10) impurity effect on the heat-transfer coefficient during pool boiling of refrigerant R600a. Experiments have been performed for the following parameters: mineral oil mass concentrations in refrigerant were 5%, 10% and 30%; boiling temperatures were -12, -2, 8 and 18°C; heat flow was in the range from 0.5 to 80 kW/m2. The volume of the cylindrical boiler was 1 liter. Stainless steel capillary with 1.6 mm outside diameter and 0.25 mm wall thickness served as a test heater. The length of the test heater was 730 mm. It is shown that the presence of the compressor oil in refrigerant leads to significant reduction in heat-transfer coefficient. The boiling process is highly susceptible to hysteresis at low heat fluxes for gradual increasing of heat loads.

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Pages : 6 p.

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Détails

  • Titre original : Experimental investigation on pool boiling of R600a/mineral oil solution.
  • Identifiant de la fiche : 30012634
  • Langues : Anglais
  • Source : 11th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2014). Proceedings. Hangzhou, China, August 31-September 2, 2014.
  • Date d'édition : 02/08/2014

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