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Effects of oil on boiling R123 and R134a flowing normal to an integral-finned tube bundle.

Author(s) : TATARA R. A., PAYVAR P.

Summary

Local, experimental heat transfer coefficients have been measured for boiling refrigerant flowing up and across a tube bundle segment representing a full flooded evaporator tube bundle, R123 and R134a data with 26 fins per inch (1024 fins per meter) tubes have been obtained. The performance of R22 without oil has also been determined. Local tube and bulk fluid temperatures were measured directly by thermocouples to calculate the refrigerant-side heat transfer coefficients. The bundle segment saturation temperature set point (taken at the top of the tube bundle) is 4.4 °C.

Details

  • Original title: Effects of oil on boiling R123 and R134a flowing normal to an integral-finned tube bundle.
  • Record ID : 2000-1763
  • Languages: English
  • Source: ASHRAE Transactions. 1999 Winter Meeting, Chicago, Illinois + CD-ROM.
  • Publication date: 1999
  • Document available for consultation in the library of the IIR headquarters only.

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