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Showing 1 to 10 of 10 for “"Heat and Mass Transfer analogy"”.
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Membrane based dehumidification and evaporative cooling using wire mesh media
Membrane dehumidification and evaporative cooling applications have the potential to significantly improve the energy efficiency of air conditioning equipment. The use of wire mesh media in such membrane applications is feasible but has not been studied extensively. Therefore, the aim of this work …
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Heat and Mass Transfer Performance and Flow Characteristics of an Offset -Strip Array at Reynolds Numbers Up to 100,000
… drop, anemometry, particle image velocimetry, mass transfer, and heat transfer experiments are performed to investigate the performance of an offset-strip fin array in the range 10,000 < Re < 100,000. Flow diagnostics show the flow in the offset-strip fin array exhibits vortex shedding at two …
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Increasing the Heat Transfer on a Grooved Surface Under Dry and Wet Conditions by Using of Jet Impingement
… on a triangular grooved surface with dry grooves and grooves containing water. One major application is for condensers of thermoelectric power plants. The heat and mass transfer analogy were successfully used to evaluate the simultaneous heat and mass transfer. Results showed that hybrid jet …
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Local shell-side coefficients in shell and tube exchanges the use of a mass transfer technique
A diffusion-controlled electrochemical mass transfer technique has been employed in making local measurements of shell-side coefficients in segmentally baffled shell and tube heat exchangers. Corresponding heat transfer data are predicted through the Chilton and Colburn heat and mass transfer …
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Effect of liquid flow patterns on distillation trays
… rising air which is forced through the tray. A heat and mass transfer analogy is drawn whereby the water temperature is mapped to liquid concentration in mass transfer, and the water temperature profiles reveal how liquid channelling may reduce the tray efficiency. The first experiment was to …
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Computer simulation of liquid flow patterns on distillation trays
… turbulence, modelled by an eddy viscosity, and a resistance to liquid flow caused by the vapour being accelerated horizontally by the liquid. The resultant equations are similar to the Navier-Stokes equations with the addition of a resistance term.A mass-transfer model is used to calculate …
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Modelling of fluid flow and kinetics in counter-current reactors for pyrometallurgical refining
<p>“Results of physical modelling and kinetic (mass transfer) simulation of a counter-current reaction launder (CCRL) for metals refining are presented. Physical modelling was conducted in a 200 cm long (L) by 20 cm wide (W) channel, using tetrachlorethylene to model 'metal' and water to model …
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Further studies on flow distribution on distillation sieve trays
… The data provide a check on some earlier work and extend the range of the existing databank, particularly to conditions more typical of industrial operation. A critical survey of data collected on trays with different hole sizes (Hine, 1990; Chambers, 1993; Fenwick, 1996; this work) showed that …
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Effect of wall motion on a two-dimensional turbulent boundary layer
… thesis studies the effect of: i) a streamwise; and ii) a skewed shear on an upstream 2-D turbulent boundary layer. The wall shear is applied to the main flow by a mechanism housing a moving rubber belt. Four individual cases are investigated. In the first case, the streamwise shear at the wall …
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Experimental investigation of local air-side heat transfer coefficients of heat exchanger fins via an absorption-based mass transfer method
It is challenging to measure local air-side heat transfer coefficients (HTCs) with high accuracy due to the complexity of the involved surface geometries. An absorption-based mass transfer method has been developed to obtain local air-side HTCs. The method relies on measuring convective mass …