Share

Flow-boiling heat transfer of R134a-based nanofluids in a horizontal tube.

Author(s) : HENDERSON K., PARK Y. G., LIU L., et al.

Type of article: Article

Summary

The influence of nanoparticles on the flow-boiling of R134a and R134a/polyolester mixtures is quantified for flows of low vapour quality (lower than 20%) over a range of mass fluxes. With direct dispersion of SiO2 nanoparticles in R134a, the heat transfer coefficient decreases (as much as 55%) in comparison to pure R134a. This degradation is, in part, due to difficulties in obtaining a stable dispersion. However, excellent dispersion is achieved for a mixture of R134a and polyolester oil with CuO nanoparticles, and the heat transfer coefficient increases more than 100% over baseline R134a/ polyolester results. In the range of these experiments, nanoparticles have an insignificant effect on the flow pressure drop with the R134a/POE/CuO nanofluid. [Reprinted with permission from Elsevier. Copyright, 2009].

Details

  • Original title: Flow-boiling heat transfer of R134a-based nanofluids in a horizontal tube.
  • Record ID : 2010-1394
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 53 - n. 5-6
  • Publication date: 2010/02
  • DOI: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2009.11.026

Links


See other articles in this issue (2)
See the source

Indexing