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University of Illinois
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An investigation of void fraction in the stratified/annular flow regions in smooth, horizontal tubes
D. Graham ; H. Kopke ; M. Wilson ; D. Yashar ; J. Chato ; T. Newell | Urbana Champaign : University of Illinois | 1999Refrigerants R134a and R410A have been used for void fraction measurements in smooth horizontal tubes with diameters between 4mm and 7mm. Quality and mass flux were varied from 5% to 90% and 75kg/m²-s to 700kg/m²_s, respectively. Two test loops,[...]rapport
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article/chapitre/communication
This chapter discusses the experimental results obtained from the microchannel research facility. First, the losses in the end pieces of the test section will be presented followed by the single-phase and two-phase pressure drop results isolated[...]rapport
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 confirmed the Moody Chart [...]