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Heat transfer characteristics of R-134a inside an inclined helical coiled tube-in-shell type condenser.

Number: pap. n. 290

Author(s) : SOLANKI A. K., KUMAR R.

Summary

An experimental investigation has been carried out to investigate the two-phase flow heat transfer characteristics of R-134a inside an inclined helical coiled tube-in-shell condenser. The helix axis of helical coiled tube makes an inclination angle of 0o, +45o and +90o from the horizontal. The test runs were performed at a fixed saturatioin temperaure of 35oC with a different refrigerant mass fluxes of 115, 156 and 191 kg m-2s-1. During the experiments, the effects of vapor quality, mass flux and inclination angle of helical coiled tube on average heat transfer coefficient of refrigearnt have been analyzed. It is found that the average heat transfer coefficient for all inclination angle of helical coiled tube rised with an increase of vapor quality and mass flux. The results also showed that the maximum and minimum heat transfer coefficient were obtained at +45o and +90o inclination angles, respectively.

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Details

  • Original title: Heat transfer characteristics of R-134a inside an inclined helical coiled tube-in-shell type condenser.
  • Record ID : 30026403
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0290

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