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Dryout characteristics of R1234yf in a vertical mini-channel
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-9902-2087
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
2013 (English)In: Eurotherm seminar on convective heat transfer, 2013Conference paper, Published paper (Refereed)
Abstract [en]

This article reports dryout characteristics of R1234yf in a single, uniformly heated vertical stainless steel channel (d=1.6mm, Lh=245mm). Tests were conducted at 27 and 32 oC saturation temperature with 100-500 kg/m2s. Results of various operating parameters (mass flux, vapor quality, saturation temperature) were discussed in detail. Comparison with R134a revealed lower (about 18%) critical heat flux values with R1234yf.  Experimental findings were compared with various macro & micro scale correlations from the literature. Katto- Ohno and Wu’s correlations [7,8] accurately predicted the data from macro and micro scale models respectively.

Place, publisher, year, edition, pages
2013.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-136071OAI: oai:DiVA.org:kth-136071DiVA: diva2:670474
Conference
Eurotherm seminar 96,17 to 18 september 2013
Note

QC 20131216

Available from: 2013-12-03 Created: 2013-12-03 Last updated: 2013-12-16Bibliographically approved

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Palm, Björn

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