Browse Air Conditioning and Refrigeration Center (ACRC) by Title

  • Nelson, S.M.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2002-01)

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  • Eldredge, B.D.; Alleyne, Andrew G. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2006-08)
    The benefits of applying advanced control techniques to vapor compression cycle systems are well know. The main advantages are improved performance and efficiency, the achievement of which brings both economic and environmental ...

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  • Davidson, I.E.; Bullard, C.W. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2006-10)
    This project extends analysis of heat exchanger design tradeoffs in response to two emerging trends: 1) demands for increasing thermal performance while reducing material costs are beginning to raise structural issues; and ...

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  • McGill, R.O. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1994-07)
    An investigation of the influences of macroscopic constrictions on the thennal performance of plate-fin heat exchangers is described in this report. Parametric studies cover parameter ranges that are typical of the ...

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  • Dobson, M.K.; Chato, J.C.; Wang, S.P.; Hinde, D.K.; Gaibel, J.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1993-06)
    Condensation heat transfer data are reported for R-22 and two potential replacements: R-134a, and a 60%/40%, azeotropic mixture of R-32 and R-125. All condensation data were collected in an 0.18" ID (4.572 mm), smooth ...

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  • Wattelet, J.P.; Chato, J.C.; Souza, A.L.; Christoffersen, B.R. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1993-06)

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  • Yannayon, B.; Bullard, C.W. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2007-05)
    Data now becoming available from prototype low energy residences confirm that peak heating and cooling loads can be reduced by factors of 3 to 5, using currently available technologies. This paper explores the range ...

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  • Hoke, J.L.; Georgiadis, J.G.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2000-11)
    Microscopic observations of frost deposition on a variety of substrates having different contact angles, (polytetrafluoroethylene PTFE, kapton, glass and others) allow the quantification of substrate effects on frost ...

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  • Rybnikar, F. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1991-07)
    Refrigerant tubing used in some mobile air conditioning systems has a nylon core, often consisting of nylon 6, nylon 66, or a copolymer thereof. A blend of the homopolymers would be more economical than the copolymer. This ...

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  • Hu, X.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1995-05)
    Horizontal-tube falling-film heat exchangers enjoy wide application because they offer superior thermal performance and operate with less fluid charge than conventional shell-and-tube or flooded heat exchangers. Recent ...

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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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  • Jassim, E.W.; Newell, T.A.; Chato, J.C. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-07)
    Adiabatic pressure drop and flow visualization in chevron plate, 1:1 aspect ratio bumpy plate, and 2:1 aspect ratio bumpy plate heat exchangers were investigated for vertical upward flow with R134a. Qualities ranging from ...

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  • Piggott, W.T., III; Newell, T.A.; Chato, J.C. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-12)

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  • Dane, M.H.; Miller, N.R.; Alleyne, Andrew G.; Bullard, C.W.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2002-08)

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  • McEnaney, R.P.; Yin, J.M.; Bullard, C.W.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1999-07)

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  • Gerlach, D.W.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2004-10)
    Electrochemical processes can be combined into thermodynamic cycles that can produce refrigeration effects. The technical feasibility and design parameters of electrochemical refrigeration systems were studied. Modeling ...

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  • Boughton, B.E. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1992-05)
    This thesis presents an analysis of the cabinet loads of a typical household refrigerator/ freezer. The thennalload on the cabinet during closed door conditions is investigated. The area of greatest focus is the door and ...

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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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  • Terrell, W., Jr.; Newell, T.A. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2003-09)
    The purpose of this research is to assess heat and moisture transport into a domestic refrigerator cabinet during open door conditions, as well as determine sensible and latent refrigerator cabinet loading caused by ...

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  • Lum, J.M.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-08)
    This investigation focuses on determining the relative air-side heat transfer performance of several wire-on-tube condensers with multiple layers at high angles-of-attack with respect to a forced air flow. During each ...

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