A simplified method for correlating mass transfer data in electrochemical cells

1998 ◽  
Vol 25 (1) ◽  
pp. 59-65
Author(s):  
P. Venkateswarlu ◽  
P. Gopalakrishna
Keyword(s):  
Mass Transfer ◽  
Electrochemical Cells ◽  
Transfer Data ◽  
Simplified Method

Heat and Mass Transfer in an Incompressible Turbulent Boundary Layer

1972 ◽  
Vol 94 (1) ◽  
pp. 23-28 ◽  
Author(s):  
E. Brundrett ◽  
W. B. Nicoll ◽  
A. B. Strong
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Mass Transfer ◽  
Porous Plate ◽  
Mixing Length ◽  
Two Dimensional ◽  
Transfer Data ◽  
Incompressible Turbulent Boundary Layer ◽  
Wide Range ◽  
Incompressible Boundary

The van Driest damped mixing length has been extended to account for the effects of mass transfer through a porous plate into a turbulent, two-dimensional incompressible boundary layer. The present mixing length is continuous from the wall through to the inner-law region of the flow, and although empirical, has been shown to predict wall shear stress and heat transfer data for a wide range of blowing rates.

scholarly journals Mass Transfer of Microscale Light-Emitting Diodes to Unusual Substrates by Spontaneously Formed Vertical Tethers During Chemical Lift-Off

2019 ◽  
Vol 9 (20) ◽  
pp. 4243 ◽  
Author(s):  
Ja-Yeon Kim ◽  
Yoo-Hyun Cho ◽  
Hyun-Sun Park ◽  
Jae-Hyun Ryou ◽  
Min-Ki Kwon
Keyword(s):  
Mass Transfer ◽  
Sacrificial Layer ◽  
Adhesive Layer ◽  
Practical Method ◽  
Electrical Characteristics ◽  
Light Emitting ◽  
Full Color ◽  
Simplified Method ◽  
Lift Off ◽  
Led Arrays

A much simplified method for transferring Gallium nitride (GaN) light emitting didoes (LEDs) to an unusual substrate, such as glass, Si, polyethylene terephthalate, or polyurethane, was demonstrated with spontaneously formed vertical tethers during chemical lift-off (CLO), without requiring a sacrificial layer or extra process steps. The LED arrays resided on a stamp that was coated with an adhesive layer. After the layer with the LEDs was transferred to the new substrates, the stamp was removed by acetone to complete the preparation. Over 3 × 3 cm2 LED arrays transferred to various substrates without any damage and misorientation. We also found that the optical and electrical characteristics improved after transfer due to decease in built-in stress. This simple and practical method is expected to greatly facilitate the development of transferrable full color GaN microLEDs on various substrates with either greatly reduced or no damage.

Gas-liquid mass transfer data in a stirred autoclave reactor

1984 ◽  
Vol 23 (4) ◽  
pp. 510-512 ◽  
Author(s):  
Stanislaw Ledakowicz ◽  
Hubert Nettelhoff ◽  
Wolf Dieter Deckwer
Keyword(s):  
Mass Transfer ◽  
Transfer Data ◽  
Liquid Mass ◽  
Liquid Mass Transfer ◽  
Autoclave Reactor

Direct Contact Gas-Liquid Heat Exchange for Energy Recovery

1990 ◽  
Vol 112 (3) ◽  
pp. 216-222 ◽  
Author(s):  
James R. Fair
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Heat Exchange ◽  
Experimental Work ◽  
Direct Contact ◽  
Energy Recovery ◽  
Gas Discharge ◽  
Transfer Data ◽  
Hot Gas ◽  
Liquid Heat

Energy from hot gas discharge streams can be recovered by transfer directly to a coolant liquid in one of several available gas-liquid contacting devices. The design of the device is central to the theme of this paper, and experimental work has verified that the analogy between heat transfer and mass transfer can be used for design purposes. This enables the large amount of available mass transfer data for spray, packed, and tray columns to be used for heat transfer calculations. Recommended methods for designing the several types of gas-liquid contacting device are summarized.

Heat/Mass Transfer in 1:4 Rectangular Passages With Rotation

2003 ◽  
Author(s):  
Peeyush Agarwal ◽  
Sumanta Acharya ◽  
D. E. Nikitopoulos
Keyword(s):  
Mass Transfer ◽  
Cross Section ◽  
Heat Mass Transfer ◽  
Rectangular Channel ◽  
Transfer Data ◽  
Naphthalene Sublimation Technique ◽  
Rotation Numbers ◽  
Local Mass Transfer ◽  
Naphthalene Sublimation ◽  
Sublimation Technique

The paper presents an experimental study of heat/mass transfer coefficient in 1:4 rectangular channel with smooth or ribbed walls for Reynolds number in the range of 5000 to 40000 and Rotation numbers in the range of 0–0.12. Such passages are encountered close to the mid-chord sections of the turbine blade. Normal ribs (e/Dh = 0.3125, and P/e = 8) are placed on the leading and the trailing sides only. The experiments are conducted in a rotating two-pass coolant channel facility using the naphthalene sublimation technique. For purposes of comparison, selected measurements are also performed in a 1:1 cross-section. The local mass-transfer data in the fully developed region is averaged to study the effect of the Reynolds and the Rotation numbers. The span-wise mass transfer distributions in the smooth and the ribbed cases are also examined.

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