Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 275 for “"Transfer coefficients"”.
-
Transfer coefficients over inclined tube banks
… presents experimental results for shell-side transfer coefficients and pressure drops across four different tube banks, using small-scale models, with yawed tubes, as found in many types of heat exchangers, boilers and nuclear reactors. The tube banks investigated have a staggered tube layout …
-
Mass transfer coefficients and effective area of packing
The effective mass transfer area (a [subscript e]), liquid film mass transfer coefficient (k [subscript L]), and gas film mass transfer coefficient (k [subscript G]) of eleven structured packings and three random packings were measured consistently in a 0.428 m packed column. Absorption of CO₂ with …
-
Heat transfer coefficients in a falling film condenser
Thesis: M.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1935
-
Heat transfer coefficients of particulate in tubular heat exchangers
This experimental study explores the heat transfer from heated bare and finned tubular surfaces to particulates in packed bed cross flow. The results from this experiment will be used to help select the type of particulates that will be used. Additionally, these results will assist in estimating …
-
Extended Surface Heat Transfer Coefficients via Endwall Temperature Measurements
… experimental process used to obtain average heat transfer data on the pin surface, at the expense of additional post processing complexity. The method is based on a unique, analytical solution of the longitudinal conduction equation with internal heat generation, allowing computation of heat …
-
Calculation of Local Heat Transfer Coefficients in Containment After a Loca
Made available in DSpace on 2017-07-06T18:55:06Z (GMT). No. of bitstreams: 3 Leung_Dominic_M_MS.pdf: 34136601 bytes, checksum: 44a40444c0e1c70eae6f96ecb6746631 (MD5) Leung_Dominic_M_MS_ABS.pdf: 452218 bytes, checksum: 53d9dd977a0bc1f5e2366ff5d6d3ba43 (MD5) license.txt: 4813 bytes, checksum: …
-
A fundamental approach to predicting mass transfer coefficients in bubble column reactors
… gas-liquid interfacial area, high heat and mass transfer rates, low maintenance requirements and operating costs. On the other hand, attempts at modelling and simulation are complicated by lack of understanding of hydrodynamics and mass transfer characteristics. This complicates design scale-up …
-
Heat transfer coefficients between condensing organic vapors and a vertical copper tube
… by catching the condensate in a tared pail. Film coefficients for the condensing vapors are calculated for the theoretical or Nusselt values, and for the actual values obtained by solving the additive resistances in the system with the water film coefficient being calculated by a modification of …
-
Overall mass-transfer coefficients for a homologous series of poly glycol ethers between toluene and water
… homologous series of solutes on the overall mass-transfer coefficients for liquid-liquid extraction. The solutes used were ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, and tetraethylene glycol dimethyl ether. The carrier solvent was water, …
-
Investigations of scalar transfer coefficients in fog during the Coupled Boundary Layers and Air Sea Transfer Experiment : a case study
… during the Coupled Boundary Layers and Air-Sea Transfer (CBLAST) Experiment 2003 from the 20-27 August 2003. Other data from the shore based Martha's Vineyard Coastal Observatory (MVCO) and moored buoys in the vicinity of the ASIT were also incorporated. During this eight day period, the …
-
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 …
-
Investigations of scalar transfer coefficients in fog during the Coupled Boundary Layers and Air Sea Transfer experiment : a case study
… during the Coupled Boundary Layers and Air-Sea Transfer (CBLAST) Experiment 2003 from the 20-27 August 2003. Other data from the shore based Martha's Vineyard Coastal Observatory (MVCO) and moored buoys in the vicinity of the ASIT were also incorporated.
-
Using the inverse heat conduction problem and thermography for the determination of local heat transfer coefficients and fin effectiveness for longitudinal fins
Heat transfer is a physical process in which energy is exchanged. It occurs in numerous applications, such as production of electricity, building climatisation, food preparation,... Since energy consumption has increased tremendously in the last decades and this trend will continue, the concept of …
-
The determination of heat-transfer coefficients from finned cylinders in an air stream at varying fin-plane/air-stream angles, fin spacing, and air velocities
… have been made in the field of heat-transfer from finned cylinders in an air-stream with the fin-plane parallel to the air-stream. Most of these investigations have been made by the National Advisory Committee on Aeronautics (NACA) at Langely Memorial Aeronautical Laboratory, Langely …
-
Mass transfer in bubble column contractors
Gas holdup and overall volumetric mass transfer coefficients in bubble column contactors have been investigated for water and aqueous electrolyte solutions. Two methods were used to obtain experimental data on volumetric mass transfer coefficients: the steady state oxidation technique and a …
-
Analysis of Pore -Scale Nonaqueous Phase Liquid Dissolution in Etched Silicon Pore Network
… were used as input parameters to calculate mass transfer coefficients for dissolution in all micromodel experiments. Mass transfer coefficients for the homogeneous and heterogeneous micromodels initially increased with water velocity but then leveled off to a relatively constant value. Also, …
-
Residence Time Distributions in Constructed Wetlands and Their Application to Modeling Nitrate Removal
… Calibration of these tests yielded nitrate mass transfer coefficients. Even though no particular trend was observed for the nitrate mass transfer coefficients, the values obtained were well within values that were calculated in this research from experimental data elsewhere.
-
Heat transfer via dropwise condensation on hydrophobic microstructured surfaces
… has the potential to greatly increase heat transfer rates. Heat transfer coefficients by dropwise condensation and film condensation on microstructured silicon chips were compared. Heat transfer coefficients are found to be seventy percent higher in the hydrophobic, dropwise condensation …
Page 1 of 14