Browse Contract Reports - Air Conditioning and Refrigeration Center by Title

  • Sulfridge, M.A.; Miller, N.R. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-01)
    A new design for a meso-scale (miniature) compressor has been developed and analyzed. The tenn meso is used to describe a device which is smaller than a traditional (i.e. macro) device, and yet larger than the micro ...

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  • Fang, X. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1999-06)
    The transcritical cycle of carbon dioxide in air conditioning and heat pump systems needs the research on heat transfer and pressure loss of heat exchangers operating at supercritical pressures. This paper offers a ...

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  • Wood, A.C. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1996-09)
    Due to recent regulations concerning several fluids used in conventional supermarket refrigeration systems, the supermarket industry is investigating the use of secondary refrigeration systems. Because secondary systems ...

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  • Stein, M.A.; Bullard, C.W.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-02)

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  • Mao, Y.; Terrell, Jr., W.J.; Reef, R.C.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-12)

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  • Porter, K.J. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1992-09)

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  • 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 ...

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  • 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)
    A first principles-based model was developed for a transcritical C02 gas cooler, using a finite element method. The model uses published correlations for refrigerant and airside heat transfer and pressure drop. Experimental ...

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  • Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1996-12)
    Energy and global warming indices for ten major appliances have been examined. A two-page summary report for each appliance category has been written as well as a combined summary for major appliances. The appliances ...

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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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  • 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 ...

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  • Hrnjak, P.S.; Miller, N.R.; Rodarte, E. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-09)
    Tests intended to determine the variation of some parameters, mainly refrigerant mass flow and velocity, on the low side of the A/C system during start up conditions were performed in a '94 Caravan . The tests were ...

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  • Miller, N.R.; Hrnjak, P.S.; Rodarte, E. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-12)

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