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- Carbon monoxide<br />Heat -- Transmission<br />Heat flux<br />Liquid argon<br />Liquid nitrogen<br />Nucleate boiling (1)
- Corrosion and anti-corrosives<br />Molybdenum alloys<br />Molybdenum (1)
- Distillation apparatus<br />Chemical equilibrium<br />Methanol<br />Acetone (1)
- Drops<br />Mass transfer -- Mathematical models (1)
- Gases -- Absorption and adsorption -- Mathematical models<br />Axial flow<br />Deviation (Mathematics) (1)
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- Heat -- Transmission<br />Heat exchangers (1)
- Heat -- Transmission<br />Nucleate boiling<br />Tubes -- Thermodynamics<br />Hydrocarbons (1)
- Injectors<br />Steam, High-pressure<br />Petroleum reserves (1)
- Metals -- Anodic oxidation<br />Molybdenum<br />Solution (Chemistry) (1)
- Oil field flooding<br />Oil field flooding -- Computer programs<br />Oil reservoir engineering (1)
- Oil wells<br />Pressure -- Measurement<br />Finite differences -- Mathematical models (1)
- Petroleum reserves -- Fluid dynamics<br />Petroleum reserves -- Mathematical models<br />Secondary recovery of oil (1)
- Plastics -- Extrusion<br />Hydrostatic extrusion<br />Silicones -- Testing (1)
- Saline water conversion<br />Saline water conversion -- Costs<br />Heat exchangers -- Materials<br />Aluminum (1)
- Saline water conversion<br />Saline water conversion -- Costs<br />Water -- Purification<br />Evaporation -- Mathematical models (1)
- Semiconductors<br />Indium antimonide crystals<br />Electrolytic oxidation (1)
Articles 1 - 16 of 16
Full-Text Articles in Engineering
Scraped-Surface Heat Exchange, Kyung Jun Park
Scraped-Surface Heat Exchange, Kyung Jun Park
Masters Theses
"An experimental study was made to test a theory developed for scraped-surface heat exchange. The apparatus was a cylindrical vessel equipped with two blades and baffles, cooled in an ice bath. The experiments showed the approach of dimensionless temperature deviated greatly from the theoretical prediction. It was found that part of this effect was the result of a change in temperature of the scraped wall, which could be accounted for by using the overall heat transfer coefficient between the cooling medium and the apparatus. Measurements on water showed the cooling rate to be much faster than the theory would predict. …
A Study Of Low-Cost Heat Exchangers For Desalination, Chin-Tsai Lin
A Study Of Low-Cost Heat Exchangers For Desalination, Chin-Tsai Lin
Masters Theses
"This investigation was proposed to search for simple and inexpensive but effective heat exchangers for the recovery of heat in water desalination by evaporation through non-wettable porous membranes. Aluminum was chosen as the material for constructing the heat exchangers. Various fluted arrangements and one plate type arrangement were chosen to increase heat transfer coefficients and conserve material. Equations correlating the heat transfer coefficients to temperatures and flow rates have been suggested for estimating the overall heat transfer coefficient at different conditions. The results of economic calculations indicate that the cost per unit transfer area of the exchangers in this investigation …
A Five-Spot Waterflood Process As Applied To The Digital Computer Based On The Prats Technique, Leonard Koederitz
A Five-Spot Waterflood Process As Applied To The Digital Computer Based On The Prats Technique, Leonard Koederitz
Masters Theses
"The technique for the prediction of injection rates and production history of a five-spot secondary recovery field pattern as presented by Prats has been significantly modified to permit rapid and accurate digital applications eliminating the heretofore prohibitive reliance upon electrolytic model results for intermediate data values following water front breakthrough"--Abstract, page i.
Numerical Simulation Of One-Dimensional Three-Phase Fluid Flow In A Stratified Petroleum Reservoir With No Cross-Flow, Ali Mohammed Akbar
Numerical Simulation Of One-Dimensional Three-Phase Fluid Flow In A Stratified Petroleum Reservoir With No Cross-Flow, Ali Mohammed Akbar
Masters Theses
"A numerical model for linear, three-phase fluid flow in a stratified petroleum reservoir has been developed for the purpose of studying water-flooding performance characteristics. Gravity forces, capillary pressure and cross-flow were neglected, but the fluids were considered compressible and evaluations of dissolved gas concentrations have been accounted for. The model was used in evaluating the performance of a water flood project for a hypothetical reservoir which contained the three phases of oil, gas, and water. The results were then compared with those obtained using the Dykstra-Parsons technique. The model produces results which were found to be similar to those obtained …
Effect Of Axial Mixing In Gas Absorption, Sundareswaran Parameswaran Iyer
Effect Of Axial Mixing In Gas Absorption, Sundareswaran Parameswaran Iyer
Masters Theses
"The effect of axial mixing in the liquid phase on the performance of a gas absorption column was studied using the experimental data of Michael Brittan for the carbon dioxide and water system. In this study, piston flow conditions were assumed for the gas phase. A one-parameter mathematical model, which characterized the flow regimes in both the gas and the liquid phases undergoing plug flow conditions, was first curve fitted for its unknown parameter (i.e. the Number of Transfer Units) by a non-linear regression analysis procedure. The "AAPD" (i.e. the Average Absolute Percentage Deviation between the predicted value of the …
Anodic Behavior Of Semiconducting Insb Single Crystals In Acidic Solutions, Lih-Da Hu
Anodic Behavior Of Semiconducting Insb Single Crystals In Acidic Solutions, Lih-Da Hu
Masters Theses
"Undoped, semiconducting single, n-type, InSb crystals were used to study the different etching behavior of the inverse {111} planes, to determine the apparent electron number of InSb under anodic dissolution (which corresponds to the sum of the absolute values of the oxidation numbers) and to investigate whether or not the inverse {111} planes show potential differences. The In {111}, Sb {111[repeating]}, {110} and {100} faces were highly polished, etched and immersed in various acidic solutions. Several new etch patterns of the inverse {111} faces were observed in giving other possibilities to distinguish both of the planes. The significant differences in …
Simulation Of The Cyclic Steam Injection Process In A Petroleum Reservoir By A Finite Difference Mathematical Model, Jean-Claude Bernys
Simulation Of The Cyclic Steam Injection Process In A Petroleum Reservoir By A Finite Difference Mathematical Model, Jean-Claude Bernys
Masters Theses
"A three-phase, one-dimensional radially layered reservoir simulator is programmed for a large memory digital computer. It is designed to provide a practical solution to the problem of determining optimum soak time during an intermittent steam injection process. The general approach is to (1) develop a representative mathematical model which describes the reservoir; and (2) employ a suitable numerical technique to solve the system of equations which comprises this model. The reservoir consists of concentric cylinders around the wellbore, a pay-zone stratified into thermally connected layers limited on the top and on the bottom by an impermeable cap and base rock, …
The Anodic Dissolution Of Molybdenum In Alkaline Solutions, Chen Hwei Chi
The Anodic Dissolution Of Molybdenum In Alkaline Solutions, Chen Hwei Chi
Masters Theses
"Details concerning the anodic dissolution of many metals in various solutions are still unknown. Discrepancies are found between the actual weight-loss of an electrode and that calculated from coulometric data. The purpose of this investigation was to study the anodic dissolution of molybdenum (Mo) in basic solutions to determine the apparent valence of Mo ions going into solution, the nature of any surface films formed during dissolution, and the polarization behavior. Three electrolytes were used: 1 N potassium hydroxide (pH = 13.6), 0.667 N potassium carbonate (pH = 11.5), and potassium carbonate-potassium sulfate mixture (pH = 9.5). chloride ion additions …
Analog Simulation Of Mass Transfer In Droplets With Turbulent Internal Circulation, Jeffrey Tsai-Hwa Kuo
Analog Simulation Of Mass Transfer In Droplets With Turbulent Internal Circulation, Jeffrey Tsai-Hwa Kuo
Masters Theses
"The object of this thesis is to simulate the Handlos and Baron Model for mass transfer into droplets by using an iterative analog computer in order to obtain eigenvalue and other parameters in a series solution. The eigenvalues λn calculated in this work are compared with the results obtained by Wellek-Skelland using a variational technique and by Patel using numerical approaches on the digital computer. From the analytical series solution, one can calculate the fraction of solute extracted in the droplets as a function of droplet contact time. PACTOLUS, a digital-analog simulator, provides a check on the validity of …
A Study Of The Nucleate Boiling Of Liquid Nitrogen, Liquid Argon, And Liquid Carbon Monoxide From Atmospheric To Near The Critical Pressure, Craig Bauer Johler
A Study Of The Nucleate Boiling Of Liquid Nitrogen, Liquid Argon, And Liquid Carbon Monoxide From Atmospheric To Near The Critical Pressure, Craig Bauer Johler
Masters Theses
"The nucleate boiling curves of three corresponding states liquids (nitrogen, argon, and carbon monoxide) were analyzed. Each liquid was studied at pressures ranging from atmospheric pressure to near the critical pressure. Saturated liquid boiling was conducted from cylindrical heaters in the horizontal position having diameters of 0.75 inches and lengths of three inches. Liquid nitrogen was boiled from four different gold heat transfer surfaces; argon and carbon monoxide were boiled from the same gold surface. The critical heat flux correlation of Cobb and Park was further verified by agreement with the experimental critical heat flux ratios obtained in this investigation. …
A Study Of The Effect Of Tube Bundle Geometry On The Nucleate Boiling Region Of A Series Of Hydrocarbon Liquids, Robert Terry Montgomery
A Study Of The Effect Of Tube Bundle Geometry On The Nucleate Boiling Region Of A Series Of Hydrocarbon Liquids, Robert Terry Montgomery
Masters Theses
"The primary purpose of this heat transfer investigation was to determine quantitatively in what manner tube bundle geometry affects the nucleate boiling region of a tube whose single tube boiling characteristics are known. A series of tests were conducted with horizontal tube bundles which produced boiling in a saturated pool of n-hexane, n-pentane, and seven carbon (C₇) hydrocarbon mixture at atmospheric pressure. Tube bundle size and pitch were the principle independent variables considered. The phenomena of heater hysteresis and aging were also studied. Data are presented which indicates that aging probably is not a direct consequence of gas adsorption on …
The Anodic Dissolution Of Molybdenum In Acid Sulfate Solutions, Ching-Kuo Chen
The Anodic Dissolution Of Molybdenum In Acid Sulfate Solutions, Ching-Kuo Chen
Masters Theses
"The world's resources of metals are decreasing. Due to this and the cost of replacing corroded materials, it has come to be realized that prevention is better than cure. The increasing demand for molybdenum and molybdenum alloys has stimulated a great amount of research into the corrosion characteristics of these materials. The result of such research has assisted in the development of suitable molybdenum alloys and protective coatings to retard corrosion. When a molybdenum anode and a suitable cathode are immersed in an oxygen-free electrolyte and are connected to a direct current power source, molybdenum is dissolved. This process is …
Design, Construction, And Initial Experiments With High Hydrostatic Pressure Extrusion Device, Edward Moniz Jorge
Design, Construction, And Initial Experiments With High Hydrostatic Pressure Extrusion Device, Edward Moniz Jorge
Masters Theses
"The purpose of this study was to design and operate equipment with which the study of polymer extrusion would be possible at hydrostatic pressures up to 50,000 psi. By hydrostatic pressure is meant the pressure of the region of the extrudate. A study of the effects of back pressure on the extrusion of silicone gum was attempted--Abstract, Page ii.
Calculation Of Optimum Conditions For Simultaneous Heat And Mass Transfer In Porous Membranes, Chia-Chang Liu
Calculation Of Optimum Conditions For Simultaneous Heat And Mass Transfer In Porous Membranes, Chia-Chang Liu
Masters Theses
"The object of this investigation was to study desalination using evaporation through porous membranes and to estimate the economic potential of the method. The major factors affecting the economics were: 1. The saline water temperature into the evaporator, tsl; 2. the temperature driving force in the evaporator, DF; 3. the temperature driving force in the heat exchanger, DTEX; and 4. the saline water temperature leaving the evaporator, ts2. The optimum conditions based on cost of water product were studied by calculating water costs under a wide range of conditions. for any given set of variables t …
Determination Of Distillation Efficiencies For The Water-Methanol-Acetone System, Chorng Shyong Wang
Determination Of Distillation Efficiencies For The Water-Methanol-Acetone System, Chorng Shyong Wang
Masters Theses
"A pilot-scale, eight-plate, bubble-cap distillation tower with a multi-point temperature recorder and automatic sampling device was used to obtain operating data on temperatures and liquid phase compositions for distillation efficiency studies. The tower was run with a single feed, a total condenser, and a partial reboiler. At steady state, as indicated by constant temperatures, samples were taken and later analyzed by gas chromatography. A digital program was developed to calculate component efficiencies on each plate according to Holland's modified Murphree plate efficiency, utilizing the operating data, and reflux rate, the input and output flows and compositions, and vapor-liquid equilibrium data. …
Numerical Simulation Of Pressures In A Radical System, Vijender Nath Gopal
Numerical Simulation Of Pressures In A Radical System, Vijender Nath Gopal
Masters Theses
"The time-space location of an advancing front has been described in such a manner as to permit the calculation of frontal pressures when a heterogeneous (in permeability) radial system is subjected to water encroachment. A finite difference application has been developed to calculate these pressures at specified radial distances from the injection or production wellbore. These pressure have been further utilized to predict the pressures at the advancing front for different time intervals"--Abstract, page iii.