Thermal characterization of double-phased secondary refrigerants: the case of paraffin slurry.
Caractérisation thermique des fluides frigoporteurs diphasiques : cas du coulis de paraffine.
Author(s) : HABERSCHILL P., SCHALBART P., MERCIER D., et al.
Summary
After having demonstrated thanks to a simple model its validity in energy terms, the behaviour of a new two-phase secondary refrigerant is analysed. It is stabilized paraffin slurry, made up of particles of polymer paraffin gel (75% paraffin) in suspension in water. A test bench was constructed. It made it possible to obtain local convection transfer coefficients in a rectangular channel. The results demonstrate that the exchange coefficients are clearly above those obtained with a single-phase fluid. Correlations showing the local or overall Nusselt number, according to the Reynolds number are proposed. The study of pressure loss demonstrates a behaviour similar to that of water with a slight rise in pressure loss when the two-phase secondary refrigerant is crystallized.
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Details
- Original title: Caractérisation thermique des fluides frigoporteurs diphasiques : cas du coulis de paraffine.
- Record ID : 2009-1668
- Languages: French
- Source: Scientific symposium: industrial cooling and thermodynamic systems. The Pôle Cristal meetings. [CD-ROM + 4 DVDs]. / Colloque scientifique : froid industriel et systèmes thermodynamiques. Les rendez-vous du Pôle Cristal. [CD-ROM + 4 DVD].
- Publication date: 2008/10/09
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- Date : 1991
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- Formats : PDF
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- Date : 2001
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- Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 18 - n. 4
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- Author(s) : HUANG L., DOETSCH C., POLLERBERG C.
- Date : 2009/06/03
- Languages : English
- Source: 8th Conference on Phase-Change Materials and Slurries for Refrigeration and Air Conditioning
- Formats : PDF
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