Browse by Author "Jacobi, A.M."

  • Smotrys, M.L.; Dutton, J.C.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-06)
    The potential for heat transfer enhancement from the combination of spanwise and streamwise vorticity has been investigated using a vortex-enhanced interrupted fin (VEIF) array. The VEIF consists of a fin with two ...
    untranslated PDF (36MB)
  • Martz, W.L.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1994-10)
    The solubility and miscibility refrigerant-oil mixtures are important in understanding the performance of refrigeration and air-conditioning systems. The objective of this study was to provide useful information on the ...
    untranslated PDF (7MB)
  • Robinson, C.M.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2001-08)
    Frost growth on heat exchanger surfaces in refrigeration and air conditioning systems has posed a challenge to heat transfer engineers for decades. Frost buildup causes an increase in the airside pressure drop and ...
    untranslated PDF (803KB)
  • Bull, B.R.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2003-05)
    The effect of longitudinal vortex generation on heat transfer is evaluated for a full scale plain fin-and-tube compact heat exchanger operating in both dry and wet conditions. The heat exchanger tested is comparable to ...
    untranslated PDF (410KB)
  • Lenger, M.J.; Jacobi, A.M.; Hrnjak, P.S. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1998-07)
    In some refrigeration applications, difficulties arise in establishing stable evaporator operating conditions, especially when using a thermostatic expansion valve. The unstable superheat signal, sometimes called hunting, ...
    untranslated PDF (6MB)
  • Brutz, J.M.; Dutton, J.C.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2005-06)
    Improved heat exchanger performance is extremely important in air-conditioning and refrigeration systems, since it can lead directly to volume, weight, energy, and cost savings. The air-side heat transfer coefficient is ...
    untranslated PDF (2MB)
  • Sommers, A.D.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2007-08)
    A method is described for fabricating controlled micro-scale, topographical features on aluminum surfaces for the purpose of exploiting those features to affect the surface wettability. Using a photolithographic approach, ...
    untranslated PDF (10MB)
  • Burton, C.M.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 1997-05)
    Vapor-liquid equilibria (VLE) data were obtained over a wide range of mixture composition and saturation conditions for difluoromethane (R-32) mixed with a polyol ester oil (POE). These data were correlated using the ...
    untranslated PDF (3MB)
  • Sommers, A.D.; Jacobi, A.M. (Air Conditioning and Refrigeration Center. College of Engineering. University of Illinois at Urbana-Champaign., 2003-12)
    Longitudinal vortex generation is a technique for enhancing heat transfer and can be accomplished by placing small flow manipulators on the fin surface of a heat exchanger. This technique is of particular benefit ...
    untranslated PDF (5MB)