Experimental investigation of heat transfer characteristics of pseudocritical carbon dioxide in a circular horizontal tube

Katsuyoshi Tanimizu, Reza Sadr

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Forced convection heat transfer of supercritical carbon dioxide in circular horizontal tube, d=8.7 mm, at relatively high Reynolds number (2×104 < Re < 105) is investigated. Experiments are carried out at two mass flow rates of 0.011 and 0.014 kg/s, for fluid inlet temperatures from 20 to 70°C, system pressures from 75 to 90 bar and constant heat flux of 20 kW/m2. Averaged heat transfer coefficients at several locations are obtained to investigate the influence of the fluid bulk temperature and pressure, respectively, on the forced convection heat transfer in the tube. The, the experimental results are then compared with a widely used empirical correlation. The results indicate that the effect of buoyancy on the heat transfer coefficient cannot be ignored in the near-critical and pseudocritical regions of fluid in this flow geometry. This dependency is believed to be due to the extreme dependence of fluid properties to temperature and pressure in this region.

Original languageEnglish
Title of host publicationASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012
Pages297-302
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2012
EventASME 2012 Heat Transfer Summer Conference Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012 - Rio Grande, Puerto Rico
Duration: 8 Jul 201212 Jul 2012

Publication series

NameASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012
Volume1

Other

OtherASME 2012 Heat Transfer Summer Conference Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012
CountryPuerto Rico
CityRio Grande
Period8/7/1212/7/12

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

Tanimizu, K., & Sadr, R. (2012). Experimental investigation of heat transfer characteristics of pseudocritical carbon dioxide in a circular horizontal tube. In ASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012 (pp. 297-302). (ASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012; Vol. 1). https://doi.org/10.1115/HT2012-58331