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Experimental two-phase heat transfer study of R245fa in horizontal mini-channels at high saturation temperatures

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Abstract
Heat transfer measurements for R254fa were conducted. The heat transfer coefficient was determined for a smooth stainless steel tube with an inner tube diameter of 3 mm. The experiments were conducted for three heat fluxes (10, 30 and 50 W/m^2), five mass fluxes (100, 300, 500, 700 and 1000 kg/(m^2.s)) and at three saturation temperatures (40°C, 70°C and 125°C). The experimental data was used to determine the influence of the saturation temperature, mass flux, heat flux and vapour quality on the heat transfer coefficient. At a low saturation temperature, the heat transfer coefficient increases with an increasing mass flux. However, at a high saturation temperature the heat transfer coefficient decreases with an increasing mass flux. Furthermore, the heat transfer coefficient increases with increasing vapour quality at a low saturation temperature. On the contrary, the heat transfer coefficient decreases at higher saturation temperatures.
Keywords
ORC, heat transfer coefficient, R245fa, high saturation temperature, mini-channels, experimental, flow boiling, refrigerant, two-phase, multi phase

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Please use this url to cite or link to this publication:

MLA
Billiet, Marijn, Remi Revellin, Romain Charnay, et al. “Experimental Two-phase Heat Transfer Study of R245fa in Horizontal Mini-channels at High Saturation Temperatures.” Proceedings of 7th European Thermal-Sciences Conference. 2016. Print.
APA
Billiet, M., Revellin, R., Charnay, R., & De Paepe, M. (2016). Experimental two-phase heat transfer study of R245fa in horizontal mini-channels at high saturation temperatures. Proceedings of 7th European Thermal-Sciences Conference. Presented at the 7th European Thermal-Sciences Conference.
Chicago author-date
Billiet, Marijn, Remi Revellin, Romain Charnay, and Michel De Paepe. 2016. “Experimental Two-phase Heat Transfer Study of R245fa in Horizontal Mini-channels at High Saturation Temperatures.” In Proceedings of 7th European Thermal-Sciences Conference.
Chicago author-date (all authors)
Billiet, Marijn, Remi Revellin, Romain Charnay, and Michel De Paepe. 2016. “Experimental Two-phase Heat Transfer Study of R245fa in Horizontal Mini-channels at High Saturation Temperatures.” In Proceedings of 7th European Thermal-Sciences Conference.
Vancouver
1.
Billiet M, Revellin R, Charnay R, De Paepe M. Experimental two-phase heat transfer study of R245fa in horizontal mini-channels at high saturation temperatures. Proceedings of 7th European Thermal-Sciences Conference. 2016.
IEEE
[1]
M. Billiet, R. Revellin, R. Charnay, and M. De Paepe, “Experimental two-phase heat transfer study of R245fa in horizontal mini-channels at high saturation temperatures,” in Proceedings of 7th European Thermal-Sciences Conference, Krakow, Poland, 2016.
@inproceedings{7243828,
  abstract     = {Heat transfer measurements for R254fa were conducted. The heat transfer coefficient was determined for a smooth stainless steel tube with an inner tube diameter of 3 mm. The experiments were conducted for  three heat fluxes (10, 30 and 50 W/m^2), five mass fluxes (100, 300, 500, 700 and 1000 kg/(m^2.s)) and at three saturation temperatures (40°C, 70°C and 125°C). The experimental data was used to determine the influence of the saturation temperature, mass flux, heat flux and vapour quality on the heat transfer coefficient.  At a low saturation temperature, the heat transfer coefficient increases with an increasing mass flux. However, at a high saturation temperature the heat transfer coefficient decreases with an increasing mass flux. Furthermore, the heat transfer coefficient increases with increasing vapour quality at a low saturation temperature. On the contrary, the heat transfer coefficient decreases at higher saturation temperatures.},
  author       = {Billiet, Marijn and Revellin, Remi and Charnay, Romain and De Paepe, Michel},
  booktitle    = {Proceedings of 7th European Thermal-Sciences Conference},
  isbn         = { 9781510832237},
  keywords     = {ORC,heat transfer coefficient,R245fa,high saturation temperature,mini-channels,experimental,flow boiling,refrigerant,two-phase,multi phase},
  language     = {eng},
  location     = {Krakow, Poland},
  pages        = {8},
  title        = {Experimental two-phase heat transfer study of R245fa in horizontal mini-channels at high saturation temperatures},
  year         = {2016},
}