details of gas displacement solutions

... Calorific Value of coal = 14840 kJ/kg Carbon fraction of coal = 0.849948 Carbon fraction of natural gas = 0.75 Combustion efficiency of coal = 26% Combustion efficiency of natural gas = 80% Gas Turbine: ... HRSG, mg is the mass of gas (kg), hg is the enthalpy of gas at the inlet to the HRSG (kJ/kg), hstk is the enthalpy of gas at the stack conditions (kJ/kg), ms is the mass of steam generated in ... the work loss factor due to mixing of cooling air with hot ( gas in the gas turbine, hgt , g ) in ( and hgt , g ) out is the enthalpy of gas in and out of the gas turbine (kJ/kg), respectively...

Ngày tải lên: 05/09/2013, 15:28

... Scope of the study, Aims of the study, Methods of the study and Design of the study Part II – Development includes four main chapters such as Literature Review, Practical Background, An analysis of ... pre-intermediate” such as rules of grammar, prefixes, suffixes, idioms and phrases,… Based on the data of this survey, 32% of the students have problems with rules of grammar 20% of them have problems ... ways of learning new words When using this textbook, 32% of the students understand the texts little and 68% of the students understand so much 64% of them find the texts interesting and 36% of...

Ngày tải lên: 14/12/2013, 16:45

... E-Commerce Solutions, and Course 2379A, Developing and Deploying Microsoft BizTalk Server 2000 Solutions Module 10: The Challenge of Designing XML Solutions 15 Demonstration: Interoperability of Office ... are a variety of editors that you can use to generate XML documents These editors range from the complexity of Microsoft Word 2002 to the simplicity of Notepad An example of one of these specialist ... better ways of creating menus This topic describes some of the core issues concerning menu design Note As one example of the efficiency of XML-based menus systems, part of the Microsoft Web site...

Ngày tải lên: 21/12/2013, 05:17

... has two atoms of hydrogen and one of oxygen combined together Similarly, methane gas, which forms the main part of natural gas, is made up of one atoms of carbon and four atoms of hydrogen So ... characteristics of the fuel and the way it burns Table 1.4 below provides the comparison of properties of typical gases Table 1.4 Comparison of Properties of Typical Gases Natural Gas Commercial ... between the number of molecules and the volume of gases, the equation shows the volumes of gases involved So, FIGURE 2.4 Combustion of methane 18 Combustion FIGURE 2.5 The volumes of gases involved...

Ngày tải lên: 16/02/2014, 07:20

... analysis The analysis of the microarray results presented in Table required the use of an arbitrary ‘cut-off’ value for level of gene expression, an approach that introduces an element of bias into the ... expression profile of cells expressing the VV-II mutant form of STAT2 was more similar to that of U6A cells than that of U6A-2 cells (Level 1) IFN treatment led to the further segregation of the sample ... number of genes in U6A and U6A-2 cells, IFN-treated U6A-VV-II cells showed the down-regulation of a substantially larger subset of genes Identification and characterization of a subset of ISGF3-independent...

Ngày tải lên: 19/02/2014, 07:20

... 5.3 Example Solutions: Vaporizing Gas Drives 5.4 Example Solutions: Condensing Gas Drives 5.5 Structure of Ternary Gas/ Oil Displacements 5.5.1 Effects of Variations in Initial ... Appendix B: Details of Gas Displacement Solutions 266 Index 280 vi CONTENTS Chapter Introduction When a gas mixture is injected into a porous medium containing an oil (another mixture of hydrocarbons), ... coalbeds [139] In the area of enhanced oil recovery, theoretical descriptions of the displacement of oil by water containing polymer and displacement of oil by surfactant solutions are closely linked...

Ngày tải lên: 05/03/2014, 18:20

... only for part of the period Because of resource and time constraints, it was decided a priori to limit the analysis of mortality displacement to ten cities To maximize the power of the study, ... from depleting the pool of critically ill people, air pollution increased the size of the pool over longer time scales by increasing the intensity of illness in general None of these studies provided ... association of air pollution at multiple lags simultaneously, providing a direct estimate of Figure Because air pollution is generally correlated, putting a large number of lags of a pollutant...

Ngày tải lên: 15/03/2014, 20:20

... definition (final value of N)t+ dN ≡ lim t→0 dt − (initial value of N)t t t (2.13) where the final value of N is the N of regions and computed at time t + the initial value of N is the N of regions and ... this form of the continuity equation in several future derivations 2.6 CONSERVATION OF ENERGY The first law of thermodynamics is a statement of conservation of energy For a system composed of a given ... variety of practical engineering problems can be solved with these concepts, and many of these problems are covered throughout the text Examples of these are the off-design operation of supersonic...

Ngày tải lên: 17/03/2014, 14:01

... insulating grains The ratio of the slopes of straight lines, A/B, gives the ratio of reaction rate constants (k2 ) of H2 and CO; k2 of H2 is analyzed to be 14 times as large as that of CO Similar H2 response ... processing of materials toward innovations of gas sensors Micro-platforms fabricated with MEMS techniques are almost ready to be used in gas sensors Excellent heating and cooling characteristics of them ... Theory of power laws for semiconductor gas sensors, Sens Actuators B: Chem 128 (2008) 566–573 [6] N Yamazoe, K Shimanoe, Roles of shape and size of component crystals in semiconductor gas sensor...

Ngày tải lên: 20/03/2014, 13:05

... by means of system, which consists of measuring camera, multimeter Keithley-2010 and PC Results and discussion The XPS-spectra of W4f- and O1s-levels of the samples and the results of their decomposition ... the results of decomposition of W4f-line in the annealed and non-annealed samples The maxima of peak couples correspond to W4f7/2 - and W4f5/2 -levels of tungsten atoms for W5+ -states of oxide ... surface of stoichiometric tungsten oxide is formed only of W6+ states of WO3 -phase (comps d-d , Fig 2-4) A signal from WO3 ·(OH2 )n is absent (comps e-e , Fig 2-4) The results of decomposition of...

Ngày tải lên: 20/03/2014, 13:12

... development of new numerical methods for direct numerical simulations (DNS) of multiphase flows that have produced detailed studies and improved knowledge of multiphase flows While the origin of DNS of ... investigated a number of problems Pozrikidis and collaborators have examined several aspects of suspensions of droplets, starting with a study by Zhou and Pozrikidis (1993) of the suspension of a few two-dimensional ... in simulating certain types of solid gas multiphase flows, they are limited to a very small class of problems One could, however, argue that simulations of the motion of particles interacting through...

Ngày tải lên: 28/03/2014, 09:20

... 12 13 14 Properties of Gases Combustion Liquefied Petroleum Gas Burners Energy Pressure and Gas Flow Control of Pressure Measurement of Gas Basic Electricity Transfer of Heat Gas Controls Materials ... limits Natural gas with a CV of 39 33 MJ/m3 and a SG of 0.58 would have a Wobbe number of 51.64 PROPERTIES OF GASES Families of Gases To ensure that appliances operate correctly the gas quality ... natural gas is in the region of 0.5 So it is about half the weight of the same volume of air The specific gravity of LPG is greater than that of air 8 BASIC SCIENCE AND PRACTICE OF GAS SERVICE...

Ngày tải lên: 29/03/2014, 08:20

... ASPECTS OF GAS CHROMATOGRAPHY Applications of Gas Chromatography Gas chromatography is a unique and versatile technique In its initial stages of development it was applied to the analysis of gases ... solubilities) of the sample components between the two phases Gas- Sampling Valve A bypass injector permitting the introduction of a gaseous sample of a given volume into a gas chromatograph Gas Solid ... PRACTICE OF GAS CHROMATOGRAPHY FOURTH EDITION Edited by Robert L Grob, Ph.D Professor Emeritus, Analytical Chemistry, Villanova University Eugene F Barry, Ph.D Professor of Chemistry, University of...

Ngày tải lên: 29/03/2014, 14:20

... variables of the combined cycle plant The data of this project are based on the document of the Department of Energy of United States -7- Simulation of a Gas Power Plant Theoretical principles 1.1 Gas ... the values of the profit and the disturbances has been determined that have more effect on the profit: - 20 - Simulation of a Gas Power Plant Table 14 Results of the study of the effect of the disturbances ... Brayton cycle of the gas turbine with a low temperature moderate Rankine cycle, the heat of waste of the exit of the Brayton cycle it serves as entrance of heat to the Rankine cycle The gas turbine...

Ngày tải lên: 01/04/2014, 10:57

... suggestions and overviews: Professor R S Brodkey, Professor R Clift, Professor J F Davidson, Dr R Davis, Professor N Epstein, Professor J R Grace, Dr K Im, Professor B G Jones, Professor D D Joseph, Dr ... phenomena associated with gas- solid flows, as well as characteristics of selected gas- solid flow systems It covers the typical range of particle sizes of interest to gas- solid flows, i.e., ^m-10 ... Mechanics of Solids 2.1 Introduction 2.2 Stereomechanical Impact 2.2.1 Collinear Impact of Spheres 2.2.2 Planar Impact of Spheres 2.3 Theory of Elastic Contact of Solids 2.3.1 General Relations of Stresses...

Ngày tải lên: 02/04/2014, 15:00

Ngày tải lên: 29/04/2014, 15:40

... BSeries  C D 0,25 với: ; C 0, 75 Z D2 D: đường kính chân vịt; ΔCD : độ chênh lệch hệ số lực cản profile mặt cắt ngang, tính theo biểu thức:  C D  (2  4( t / C) 0, 75 ) 0,003605  (1,89  1,62 ... 25, October 1978 ; [2] Oosterveld, M.W.C and Oossanen, P van ; ‘Furthur computer analyzed data of the Wagerningen B-Screw Series ‘ International Shipbuilding Progress, July 1975 ; [3] Proceedings...

Ngày tải lên: 15/05/2014, 14:25

... difference of the time delays t = tq-tT These studies have pointed out that the usefulness of the Cattaneo-Vernotte and DPL exact models is limited In this study, by means of the method of separation of ... effects of the thermal loading and thermal properties of the materials, as was explained by Tzou [3] In this way, the DPL model should provide a comprehensive treatment of the heterogeneous nature of ... According to the method of separation of variables, a solution of the form (6) m=1 where Equation 5c can be solved assuming that Pm(t) = exp(st) is its solution for some value of s This provides the...

Ngày tải lên: 21/06/2014, 04:20

... Boundary Value Problems In view of 1.11 and the definition of Gn t, s , we can obtain u t ≥ 0, t ∈ 0, bn This completes the proof of Lemma 1.3 Now we state the main results of this paper as follows ... any compact subintervals of 0, 10 Boundary Value Problems Proof of Theorem 1.5 Suppose that u1 t and u2 t are C 0, positive solutions to 1.1 and 1.2 , and at least one of ≡ them is a smooth positive ... existence of positive solutions of singular superlinear m-point boundary value problems,” Applied Mathematics and Computation, vol 179, no 1, pp 67–78, 2006 Y Zhang, “Positive solutions of singular...

Ngày tải lên: 21/06/2014, 20:20

... at least two positive solutions u1 and u2 Motivated by the above papers, the purpose of our paper is to show the existence of twin or an arbitrary odd number of positive solutions to the BVP ... Journal of Mathematical Analysis and Applications, vol 295, no 2, pp 378–391, 2004 15 R Ma and N Castaneda, “Existence of solutions of nonlinear m-point boundary-value problems,” Journal of Mathematical ... two fixed points of A which are positive solutions u1 and u2 , belonging to P γ, c , of the BVP 1.1 and 1.2 such that a < α u1 with θ u1 < b , b < θ u2 with γ u2 < c 3.7 The proof is complete...

Ngày tải lên: 21/06/2014, 20:20