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Process-integrated energy efficiency in industrial plants may only be achieved with new innovative concepts for the apparatus and the processes. The main obstacle of their application is the absence of adequate reference data and calculation methods for the design and operation of the apparatus. Therefore, a joint research program has been started recently to develop new equipment and processes for heat integration in industrial cooling systems. In this context, the heat transfer in boiling is investigated on differently finned tubes with pure refrigerants and their mixtures in wide ranges of heat flux and saturation pressure. Some of the results of the heat transfer coefficient show no reduction of the mixture values compared to the pure ones on smooth tubes. On finned or enhanced tubes the results are different; the mixture effect is intensified depending on the fin geometry. The effects are explained by the investigation of the bubble formation and the microstructure of the fin tube and compared to measurements from literature.
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Details
- Original title: Influence of fin geometry on heat transfer in boiling of pure refrigerants and their mixtures.
- Record ID : 30008092
- Languages: English
- Source: 4th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants
- Publication date: 2013/06/17
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Indexing
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Themes:
Heat transfer;
Mass transfer;
Hydrocarbons;
Blends - Keywords: Geometry; Fin; Correlation; Heat transfer; Mixture; Hydrocarbon; Refrigerant; Boiling
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- Date : 1993/05/12
- Languages : English
- Source: Energy Efficiency in Refrigeration and Global Warming Impact.
- Formats : PDF
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- Author(s) : ROSSI F. de, GRAUSO S., MAURO A. W., et al.
- Date : 2010/04/12
- Languages : English
- Source: 9th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2010). Proceedings. Sydney, Australia, April 12-14, 2010.
- Formats : PDF
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Review on pool boiling heat transfer of wide bo...
- Author(s) : SPAN R., BULJINA I., GORENFLO D.
- Date : 2005/08/02
- Languages : English
- Source: Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
- Formats : PDF
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- Author(s) : BIER K., SCHMIDT J.
- Date : 1996/05/29
- Languages : English
- Source: Proceedings of the 2nd European Thermal-Sciences (EUROTHERM) and 14th UIT National Heat Transfer Conference 1996.
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Analysis of the performance of a pin-fin assemb...
- Author(s) : SHIN J. Y., SON Y. S., LEE D. Y.
- Date : 2002/12/04
- Languages : English
- Source: Green breeze from Asia: frontiers of refrigerants, heat transfer and system.. ACRA-2002. Proceedings of the Asian conference on refrigeration and air conditioning.
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