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Showing 1 to 13 of 13 for “"inlet mass flow rate"”.
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Study of Buoyancy -Induced Flows in a Prototypical CVD Reactor
… prototypical CVD reactor was sought. Film growth rate shows time varying pattern due to the transient operating conditions. But it oscillates between two end steady states. Thus, it is observed that film growth rate and uniformity cannot be improved by applying pulse sequence of precursor gas, …
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Experimental investigation and analyses of continuous type hybrid photoelectrochemical hydrogen production systems
… temperatures (20, 40, 60, and 80°C) and three inlet mass flow rates (0.25, 0.50, and 0.75 g/s). Furthermore, PEC-based processes are tested under two light settings (600 and 1200 W/m2). These results are compared to the thermodynamic model outputs. Parametric studies are run by varying the …
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Performance measurement and visualization on the refrigerant distribution in the vertical manifold of the microchannel tube heat exchanger
… is an aluminum manifold used in industry with 5 inlet and 5 exit microchannels; the second is a transparent replica of the first; the third is a transparent manifold with 10 inlet and 10 exit microchannels used to study the effect of increasing manifold length and microchannel number. The inlet …
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Computational Investigations of Boundary Condition Effects on Simulations of Thermoacoustic Instabilities
… to thermoacoustic instability problems is demonstrated by two classic examples. The first example explores the effects of the heated wall temperature on the one-dimensional thermoacoustic convection. The sensitivity of the Rayleigh index, which is the indicator of thermoacoustic instabilities, is …
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Heat transfer enhancement phenomena and pressure drop characteristics in two-phase pulsating flow using R-134A
… heat transfer and pressure drop aspect of a saturated two-phase flow imposed to periodic inlet mass flow rate were studied using both experimental and modeling approaches. The two-phase flow of R-134 was tested in a single pass, horizontal smooth copper tube coil with a 6.2 mm (0.244-in.) inner …
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Experimental and Numerical Study of Dual-Chamber Thermosyphon
… porous boiling enhancement structure integrated in the evaporator. Sub-atmospheric pressure boiling achieved heat fluxes in excess of 100 W/cm2 with negligible incipience superheat, for wall temperatures below 85 oC. Reduced pressures resulted in reduction of heat transfer coefficient with …
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Effectiveness of a Serpentine Inlet Duct Flow Control Scheme at Design and Off-Design Simulated Flight Conditions
… a static ground test facility to determine the flow quality of a serpentine inlet duct incorporating active flow control for several simulated flight conditions. The total pressure distortion at the aerodynamic interface plane (AIP) was then used to predict the resulting stability for a …
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The vertical flow centrifugal gas-liquid separator and its application to the removal of gases from geothermal wells
Two vertical flow centrifugal gas-liquid separators were designed, built and tested using steam-water and air-water mixtures as the two-phase fluids. The theoretical analysis of the vertical flow centrifugal gas-liquid separator and the experimental data from the model separators is given in this …
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Advances in the operating condition design analysis of air based photovoltaic thermal solar roof systems
… of an air based PV/T solar roof system when integrated with a building’s existing HVAC system in various climates within the United States. Specifically, this study utilizes a computational and numerical analysis program that incorporates computational fluid dynamics (CFD) to investigate detailed …
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Refrigerant flow distribution in vertical headers of reversible microchannel heat exchangers
… heat exchangers. The total and liquid mass flow rate in each microchannel tube is determined based on experimental measurement. Two-phase flow in the transparent vertical header is visualized by a high speed camera, in assist to understand the distribution among microchannel tubes. The …
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Experimental and Numerical Investigation on Particle-gas Flows in Open Vortex-based Solar Cavity Receivers
… presents a systematic study of particle-gas flow behaviour within an open vortex-based solar cavity receiver, termed a Solar Expanding-Vortex particle Receiver-Reactor (SEVR) that is under development at the Centre for Energy Technology (CET) at the University of Adelaide. This class of solar …
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Experimental study and modeling of liquid-vapor flow in the second header of microchannel condensers with separation circuitry
… prototypes have been designed to have the inlet in the middle of the height. After the 1st pass (multiple parallel microchannel tubes brazed together as one part by aluminum louver fins), liquid separates from vapor inside the vertical second header (manifold tube with a plural of parallel …
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An Analysis of Quench Front Propagation During Bottom Reflood of a heated Annular Channel
Made available in DSpace on 2017-07-06T18:49:01Z (GMT). No. of bitstreams: 3 Kimball_Kevin_D_MS.pdf: 72010837 bytes, checksum: b7112f4e2ed4b67c6244fc6a2a074f9f (MD5) Kimball_Kevin_D_MS_ABS.pdf: 820094 bytes, checksum: e1c23063ac37846e1ce48a616c0f2a6e (MD5) license.txt: 4813 bytes, checksum: …