Browse by Subject "R-22"

  • Vollrath, J.E.; Hrnjak, P.S.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2003-10)
    Pressure drop and heat transfer measurements were taken for smooth and internally enhanced aluminum test sections using pure R22 and ammonia. Two-phase condensation tests were conducted in the horizontallyoriented test ...

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  • Tallitsch, D.A.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-07)
    This investigation explored the effects of fractionation and distribution of R-407c in brazed plate evaporators with an emphasis at low mass flux. Experiments were performed in parallel with R-22. A parametric study was ...

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  • Kim, M.H.; Bullard, C.W. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-03)
    A simple semi-empirical model for small rolling-piston-type rotary compressors using the most potential alternative refrigerants R-410A and R-407C including R-22 has been developed based on thermodynamic principles and ...

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