Browse Technical Reports - Air Conditioning and Refrigeration Center by Author "Graham, D.M."

  • Graham, D.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-12)
    Void fractions were determined experimentally for Refrigerants 134a and 410A condensing inside a smooth horizontal 7.04 mm (0.277") i.d. tube. Tests that encompass a range of mass fluxes from 75-450 kg/m2-s (55-330 ...

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  • Graham, D.M.; Chato, J.C.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-03)
    R134a condensation experiments have been petfonned over a mass flux range of 75 to 450 kg/m2-s (55 to 330 klbm/ft2-hr) in an 8.91 rom (0.351") inside diameter, axially grooved, microfin tube. At 75 kg/m2-s (55 klbm/ft2-hr), ...

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  • Yashar, D.A.; Wilson, M.J.; Kopke, H.R.; Graham, D.M.; Chato, J.C.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1999-08)
    A series of evaporation and condensation experiments have been performed on horizontal microfin tubes with refrigerants R134a and R410A. Mass flux varied from 75 kg/m2-s to 700 kglm2 -s and average test section quality ...

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  • Graham, D.M.; Kopke, H.R.; Wilson, M.J.; Yashar, D.A.; Chato, J.C.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1999-01)
    Refrigerants R134a and R410A have been used for void fraction measurements in smooth horizontal tubes with diameters between 4mm and 7mm. Quality and mass flux were varied from 5% to 90% and 75 kglm2-s to 700 kglm2-s, ...

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