Browse Technical Reports - Air Conditioning and Refrigeration Center by Subject "mobile air conditioning systems"

  • Weston, P.G. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1996-05)
    Compared to other air-conditioning and refrigeration systems, mobile air-conditioning systems are unique in the respect that they operate almost entirely under transient conditions. The major operating transients include: ...

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  • Hemami, T.L. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1998-09)
    A transient model was developed to predict the behavior of the vapor compression cycle of a mobile air-conditioning system. Mobile air-conditioning systems operate in a transient mode due to variations in compressor ...

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  • Knobloch, L.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1992-01)

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  • Schenk, C.R. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1992-01)

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  • Wandell, E.W. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-08)
    Mobile air conditioning circulating oil concentration and compressor start-up torque were experimentally investigated to develop a control strategy to improve compressor reliability. An installed electronic expansion ...

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  • Collins, C.D.; Miller, N.R. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1996-07)
    An experimental study of the the transient behavior of an automobile arr conditioning system was performed. The experiments were conducted on an original equipment air conditioning system modified for laboratory ...

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  • Rubio-Quero, J.E. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1995-07)
    A majority of the design and component selection processes for mobile air conditioning systems are based on results obtained from steady-state analyses. Although valuable, these steady-state tests do not accurately ...

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  • Whitchurch, M.R. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-08)
    A humidity addition system was installed in the mobile air-conditioning test facility. The system is able to produce relative humidities at the evaporator inlet in excess of 95% RH. The system is able to control the ...

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  • Siambekos, C.T. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1991-10)
    The objective of the CU1TeJ1t study was to simulate the steady-state performance of an automotive air conditioning plate-fin evaporator. A one-zone model was defined for conditions when the evaporator outlet refrigerant ...

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  • Drozdek, J.C.; Chappell, J.D.; Cusano, C.; Hrnjak, P.S.; Miller, N.R.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-07)
    A study was performed on a swashplate compressor to determine the state of lubrication. Measurements of electrical resistance were taken as a primary measure of oil film lubrication at the sliding shoe/swashplate interface. ...

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  • Chappell, J.D.; Drozdek, J.C.; Cusano, C.; Hrnjak, P.S.; Miller, N.R.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-07)
    This study used previously developed instrumentation to determine the state of compressor lubrication in an automotive NC system during three transient tests. The primary technique used in the study was measurement of ...

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  • Drozdek, J.C.; Chappell, J.D.; Cusano, C.; Hrnjak, P.S.; Miller, N.R.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-02)
    Understanding lubrication failures at the shoe/swash plate contact of automotive swash plate compressors will greatly enhance the reliability of the air conditioning system. Maintaining proper lubrication is not always ...

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  • Zietlow, D.C.; VanderZee, J.C.; Pederson, C.O. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1993-09)
    This study uses a semi-theoretical steady state computer simulation of an automotive air conditioning system to evaluate design options. The simulation has been validated with experimental data. Influence coefficients ...

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  • Darr, J.H. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1992-02)
    The objective of the current study was to develop a model for the steady-state performance of a reciprocating automotive air conditioning compressor. The model equations were composed of analytical equations based on ...

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  • Johnston, C.E.; Miller, N.R.; Dunn, W.E. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-07)

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  • Solberg, J.R. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-01)
    As the digital age engulfs our society, more and more devices surrender to the inevitable fate of digital control. Routinely, digital electronics replace traditional mechanical systems usually yielding an improvement in ...

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  • VanderZee, J.C. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1993-05)
    The objective of the work presented in this paper is the development of a transient model of a mobile air conditioning condenser. Refmement of a steady state model is an intermediate task that is especially important for ...

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  • Smith, S.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1993-05)
    The objectives of this study were to develop semi-theoretical steady state and transient models of a mobile air conditioning evaporator for use in a complete system simulation. The steady state evaporator heat transfer ...

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  • Solberg, J.R.; Miller, N.R.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-02)
    A traditional method of controlling evaporator superheat in a vapor compression air conditioning system is the thermostatic expansion valve (TXV). Such systems are often used in automotive applications. The TXV depends ...

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  • Yin, J.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1998-02)
    A new theoretical model for predicting short tube orifice performance is presented. The new model can be used over wide parameter ranges, with subcooling from O°C to 50°C, inlet pressures as high as 35bar, and inlet ...

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