Browse by Subject "pressure drop"

  • Meyer, J.J.; Dunn, W.E. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1996-08)
    This study examines the heat transfer and pressure drop performance of R22 and R502 alternatives, most of which are mixtures of two or three refrigerants, while condensing in an enhanced tube and while expanding in a ...

    application/pdf

    application/pdfPDF (26Mb)
  • Jassim, E.W.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2005-07)
    Probabilistic two-phase flow map pressure drop and void fraction models are developed for 6-port microchannels in order to provide a more accurate and common means of predicting void fraction and pressure drop. The models ...

    application/pdf

    application/pdfPDF (398Kb)
  • Adams, D.C.; Hrnjak, P.S.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2003-12)
    Aluminum multi-port microchannels are currently utilized in automotive air conditioners for refrigerant condensation. In general, research activities are directed towards developing other air conditioning and refrigerat ...

    application/pdf

    application/pdfPDF (426Kb)
  • Yin, J.M.; Bullard, C.W.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-04)
    Single-phase pressure drops inside a microchannel heat exchanger were tested systematically. Local pressure drop coefficients were determined from the experimental data and compared with published correlations. Results ...

    application/pdf

    application/pdfPDF (1Mb)
  • Thompkins, D.M.; Newell, T.A.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2002-12)
    In Chapter 1, an experimental investigation of single phase fluid distribution through an array of microchannel discharge tubes was conducted. Span-wise pressure profiles were also obtained. The working fluids were air ...

    application/pdf

    application/pdfPDF (4Mb)
  • Wilson, M.J. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-05)
    The purpose of this study was to observe refrigerant behavior in flattened copper tubes. A round, smooth tube with an internal diameter of 8.91 mm is taken as the base case. This tube is then successively flattened to ...

    application/pdf

    application/pdfPDF (8Mb)
  • Payne, W.T. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-12)
    An experimental investigation of pressure drop and void fraction in aluminum microchannel tubes was conducted for a variety of flow conditions. Primary fluids of interest are refrigerants, R134a and R41OA. The microchannel ...

    application/pdf

    application/pdfPDF (5Mb)