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Topic: Component thermodynamics

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Gibbs phase rule

Phase (matter)

Phase diagram

Triple point

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	Component (thermodynamics) - Wikipedia, the free encyclopedia
		Calculating the number of components in a system is necessary, for example, when applying Gibbs phase rule in determination of the number of degrees of freedom of a system.
		The number of components is equal to the number of independent chemical constituents, minus the number of chemical reactions between them, minus the number of any constraints (like charge neutrality or balance of molar quantities).
		The components of a system are those chemical constituents whose concentration may be varied independently in the various phases.
	en.wikipedia.org /wiki/Component_(thermodynamics) (207 words)

	Component - Wikipedia, the free encyclopedia
		Component video, a type of analog video information that is transmitted or stored as two or more separate signals,
		Connected component (graph theory), a maximal connected subgraph,
		Component (thermodynamics), a chemically distinct constituent of a phase of a system,
	en.wikipedia.org /wiki/Component (153 words)

	Binary Phase Equilibria Glossary (Site not responding. Last check: 2007-10-24)
		The chemical potential of a component is defined as the derivative of the (extensive) Gibbs free energy with respect to the mass (or number of moles, either definition is good as long as we are consistent) of the component in the phase, at constant temperature, pressure, and masses of all the other components.
		Component: A chemical formula that can be used to express the compositional range available to a system (when used to express the (generally more restricted) compositional range available to a phase, it is called a phase component).
		A system of two components is called binary; although the absolute quantities of the two components are independent, when composition is expressed as any intensive parameter (such as mass fraction or mole fraction) it requires only one parameter to describe compositions is such a system.
	expet.gps.caltech.edu /~asimow/glossary.html (3692 words)

	Biology Bullettin. THEORETICAL BIOLOGY. Thermodynamics of Aging
		Subdivision of thermodynamic functions into individual components in accordance with the hierarchy of actual structures is possible due to the existence of the unidirectional series of life (or relaxation) times of structures with different hierarchies.
		The thermodynamic theory of aging developed by the author implies that one task of the food industry is to produce food additives, such as vitamin complexes, which contain all physiologically important ingredients of living tissues.
		Gladyshev, G.P. and Komarov, F.I., Hierarchic Thermodynamics and Gerontology, Vestn.
	www.endeav.org /evolut/text/ta1 (5469 words)

	introduction
		Equilibrium between the liquid and vapor phases requires that the temperatures, pressures, and partial fugacities of each component be equal in the two coexisting phases.
		In the case of the red line, the vapor pressures of the two components are very close together and very small positive deviations from ideality can cause there to be a maximum in the total pressure.
		But, when you have mostly component 2, then the activity coefficient of component 1 may be quite different than pure component 1 because molecule 1 is almost completely surrounded by molecules of component 2 and the 1-2 interactions will dominate the behavior of the activity coefficient of component 1.
	www.et.byu.edu /~rowley/VLEmodule/classical_thermo.html (1906 words)

	Part I
		Thermodynamic parallel of Galileo’s principle would amount to a statement like, ‘the performance of two identical ideal engines will remain identical irrespective of whether or not the background temperature of one is substantially different from that of the other’.
		Thus while in thermodynamics disregarding of the effect of background energy on the process occurring on the foreground is unimaginable, in rest of physics it is the norm.
		These qualities are mutually exclusive because value of the component of intensive quality (temperature) does not depend on the quantity of substance of the system, whereas the value of the component of extensive quality (entropy) depends on the quantity of substance of the system (5, p.12).
	www.wbabin.net /viraj/viraj2.htm (7967 words)

	Thermodynamics
		Granted, thermodynamics is a pretty broad subject area as you already know from your introductory thermodynamics courses.
		Aspects of solution thermodynamics, chain conformations and phase separation are dealt with in a separate chapter on polymers.
		Keep in mind that the free energy condition is a thermodynamic one only; it does not describe the rate at which transformations from one phase to another may take place, even if they are thermodynamically favorable.
	www.tulane.edu /~bmitche/book/thermo.html (1365 words)

	SOME NOTIONS AND TERMS USED IN THE THEORY*
		Conversely, the higher the chemical thermodynamic stability of a substance, the lower its supra-molecular thermodynaic stability in a condensed state.
		Real quasi-equilibrium - in hierarchic biological thermodynamics (macrothermodynamics), the state of an open system (considered at the given hierarchic level) that is achieved at the moment of death due to the accomplishment of the substance exchange with the environment in the given time scale.
		Thermodynamically quasi-closed system - a thermodynamic system open at relatively large times, which can be considered as closed at small times (due to the negligibly small rate of the matter exchange with the environment).
	www.endeav.org /evolut/age/sntut/sntut.htm (2581 words)

	Cape-Open and Simulis Thermodynamics Enable You to Use Rigorous Thermodynamics in Matlab
		Thermodynamics is a thermodynamic properties and phase equilibrium calculation server for pure compounds and mixtures (containing up to 200 simultaneous compounds).
		Thermodynamics is always there where the end-user needs it and guarantees a true thermodynamic data consistency throughout the different applications he may use.
		Thermodynamics can be described either by selecting a CAPE-OPEN property package or, in native, by importing compounds from different data sources and choosing a thermodynamic model and its related binaries.
	aiche.confex.com /aiche/2005/techprogram/P31460.HTM (874 words)

	Thermodynamics Glossary (Site not responding. Last check: 2007-10-24)
		The chemical potential of a component of an ideal gas mixture depends on the mole fraction of the components as well as the mixture temperature and pressure, and is independent of the identity of the other constituent gases.
		is the ratio of the mass of one component in a mixture to the total mass of the mixture.
		of a gas component in a gas mixture is the ratio of the component pressure to the mixture pressure.
	www.hpt.chalmers.se /swedish/Termodynamik/Glossary.html (12103 words)

	Thermodynamics
		Thermodynamic calculations do not give information as to the rates of reaction only whether they are favorable or not.
		Free energy is a valuable concept because it allows one to determine whether a reaction will proceed and allows one to calculate the equilibrium constant of the reaction which defines the extent to which a reaction can proceed.
		To effectively interpret the course of a reaction in the presence of a mixture of components, such as in the cell, one needs to account for the free energies of the contributing components.
	web.indstate.edu /thcme/mwking/thermodynamics.html (1538 words)

	ProSim - Software and Services for Process Simulation (Site not responding. Last check: 2007-10-24)
		Simulis Thermodynamics is a thermophysical properties calculation server available as an MS-Excel add-in, a MATLAB toolbox or as a module pluggable in any other software that requires quality thermophysical properties.
		A large volume is expected as studies show that, in the same company, thermodynamic calculations can be performed by many engineers and technicians and not only by process simulation and modelling specialists.
		In this case, run-time licenses are proposed and the distribution is ensured by the developer himself (please consult).
	www.prosim.net /prod_simulist.html (996 words)

	HSE - OFFSHORE: Fire and Explosion Strategy - Issue 1 - Sour...
		This study concluded that, whilst the idealised cases of single phase and single component, two-phase releases had been studied in detail, there was little information on the behaviour of the type of hydrocarbon mixtures likely to be found on offshore structures.
		Downhole annulus gas inventories may be of the order of several tonnes and represent a significant topsides fire and explosion hazard as they are outside the scope of protection of the blowdown system.
		An appreciation of the uncertainties in source term evaluation is becoming more important with the increasing focus on 'realistic' gas cloud volumes, the evaluation of which may be critically dependent on correct representation of the source characteristics.
	www.hse.gov.uk /offshore/strategy/source.htm (1949 words)

	MatSE 401 (Site not responding. Last check: 2007-10-24)
		Discussion of three fundamental laws of thermodynamics and their applications to materials systems, particularly phase transformations and phase equilibria in single and binary systems.
		First law of thermodynamics and its applications to constant pressure processes: calculation of enthalpy as a function of temperature; calculation of heat of reactions including chemical reactions and first-order phase transformations such as melting and solidification; calculation of adiabatic flame temperature.
		Third law of thermodynamics; calculation of entropy as a function of temperature and entropy of reactions.
	www.matse.psu.edu /academics/matse401.html (411 words)

	Mixtures; Partial Molar Quantities; Ideal Solutions
		It is the incremental volume obtained by adding a small amount of component i to the mixture while holding the temperature, pressure, and the number of moles of all the other components constant divided by the number of moles of component i.
		One way is to begin with one mole of a compound, call it component 1, add a small amount of component 2 and measure the volume, add a little more of component 2 and measure the volume again.
		We know that the chemical potential of component 1 must be the same in the solution as in the vapor in equilibrium with the solution.
	www.chem.arizona.edu /~salzmanr/480a/480ants/mixpmqis/mixpmqis.html (1250 words)

	courses.html (Site not responding. Last check: 2007-10-24)
		By applying the logic framework of thermodynamics and knowledge on how to use this framework you will develop an effective style of problem solving that will make your engineers more productive or make you an more valuable employee to your company.
		The quality of these decisions lie on the quality of the thermodynamic models used by the process simulator and specific interaction parameters for the mixtures of interest.
		This thermodynamic reasoning can be used to gauge weak points in complex simulations, needs for experimental measurements and a critical attitude towards models.
	www.virtualmaterials.com /Menu_Courses/courses.html (520 words)

	Course Description
		This course will cover the fundamentals of classical thermodynamics as applied to the calculation and prediction of phase stability, chemical reactivity and synthesis of materials systems.
		The prediction of the phase stability of two and three component systems will be illustrated through the calculation and interpretation of phase diagrams for a variety of materials systems.
		Understand thermodynamics for advanced courses: thin film growth, kinetics, materials synthesis, and stability/properties of nano-scale materials.
	www.seas.upenn.edu /~mse260/courseoutline.html (513 words)

	Thermodynamics
		The same information content is contained in an equation expressing the entropy in terms of the internal energy, volume, and the numbers of particles of the chemical components.
		This is equivalent to stating that the second derivatives of state functions are independent of the order of the differentiation.
		That is, the chemical potential of component one must decrease if component two is added to the system.
	bessie.che.uc.edu /tlb/teach/grad/722w03/tbnotes/node2.html (673 words)

	MMAT 250 Metallurgical Thermodynamics I (Site not responding. Last check: 2007-10-24)
		After introducing the laws of thermodynamics, single components and solutions are examined by the use of partial molar quantities and activities.
		This week explores the variety of ramifications of free energy applied to a single component like water, iron, sulphur, etc. Topics include: single component phase equilibria, effect of temperature and pressure, the Clapeyron and Clausius-Clapeyron equations, pressure, activity and fugacity.
		Methods of presenting three component systems are first discussed followed by an analysis of various ternary systems.
	www.mmat.ubc.ca /courses/mmat250 (994 words)

	Ontolingua Theory THERMODYNAMICS
		Slot-Documentation: the capacity of a thermal component, which is defined differently depending on the type of the component
		Unlike 'terminal' in DME, a port is independent of a component.
		The class of thermal components with one inlet and two outlets.
	www-ksl.stanford.edu /htw/dme/thermal-kb-tour/thermodynamics.html (1698 words)

	Components :: Component Frameworks
		MW6 Technologies: Offers royalty-free software components and applets with evaluation versions for most components along with registration instructions.
		Tensegrity Software - Graphic Components: ActiveX and Java applets 2D and 3D business charts for data visualization and sophisticated Gantt charts for efficient resource allocation and planning to latest graphical components to model and present processes and structures.
		XL Report: Component designed for developing data analysis and report generation solutions through the use of Microsoft Excel (.Net, ActiveX, Delphi VCL version).
	computers.gourt.com /Programming/Component-Frameworks/Components.html (1047 words)

	ME481/581 F05 Final Exam (Site not responding. Last check: 2007-10-24)
		IDEAL SOLUTION: The two components are assumed to have no interaction, so that the A and B atoms don't chemically interact with themselves or with each other.
		This gives the free energy of the solution as a linear combination of the free energies of the two independent components, plus a contribution to the free energy due to the configurational entropy (the entropy of mixing).
		are the Gibbs Free Energy of the pure A and B components at the temperature T, R is the Ideal Gas Constant (=8.314 J/mole-K).
	oregonstate.edu /instruction/me481/Exams/F05/ME481F05Final.html (2222 words)

	[No title]
		Additional special topics such as thermodynamics of polydisperse mixtures, electrolyte solutions, and polymer thermodynamics are discussed as time and interest level dictate.
		Recognize thermodynamic fundamentals, distinguish from theoretical or empirical models used in thermodynamics for calculating phase and chemical equilibrium.
		In particular, the course expands in the molecular interpretations of kinetic phenomena; it examines the combined kinetic, mass and heat transfer effects in a reactive particle; and it concludes with the design of non-ideal heterogeneous reactors.
	www.che.sc.edu /courses/grad_desc.htm (1779 words)

	Components :: Electronics and Electrical
		C.P. Clare Corporation: Designs, manufactures and sells high voltage analog semiconductor integrated packages and discrete components, electromagnetic relays and switches, surge protection devices, transformers and specialized electronic components used in a variety of applications.
		Cliff Components: Manufacturer of components for the audio, instrumentation, computer, medical, appliance and test industries.
		Stetron: Manufacturer of electronic components and solutions for original equipment manufacturers in the telecom, multimedia, automotive and industrial control sectors.
	business.gourt.com /Electronics-and-Electrical/Components.html (1322 words)

	Upgrade for heat-exchanger design module: News from ProSim
		This new version integrates additional calculation capabilities for properties (fugacity, internal energy), news flashes (temperature-volume, enthalpy-internal energy, internal energy-volume), as well as derivatives of available properties, with respect to temperature, pressure, or mole number.
		Additionally, Simulis Thermodynamics now offers the ability to automatically generate PSF (Process Simulation File) files, directly usable by the Aspen TASC (HTFS) software, for heat exchanger calculations.
		Particularly relevant for exchanger manufacturers and their customers, this new feature allows TASC users with a limited thermodynamic database to access one of the richest thermodynamic packages available and enhance the quality of their exchangers' design calculations at reasonable price.
	www.engineeringtalk.com /news/prz/prz108.html (303 words)

	The Thomas Group - PTCL, Oxford (Site not responding. Last check: 2007-10-24)
		We now apply the second equation (M1) together with the condition (2)(b) to determine the conditions for equilibrium between two sub-systems within a single isolated system and this is done in the panel below.
		Although the result, that temperature and pressure are uniform in the system at equilibrium, is not surprising, the method can now be extended to the more interesting situation of a two component system.
		In a two component system the Gibbs free energy contains contributions from the free energies of the two pure substances and from the mixing.
	physchem.ox.ac.uk /~rkt/tutorials/equilibrium/chemical_potential.html (381 words)

	AME Undergraduate Courses
		understand and be able to use the continuity, the momentum equation, and the first and second laws of thermodynamics on control-volume systems to predict the performance of energy-system components;
		Each semester, the entire faculty teaching the interconnected courses in the program, meet to discuss each course and attempt to assess the effectiveness of the course in addressing learning outcomes.
		The present approach to teaching the course represents a major change from previous offerings with an increased emphasis on stressing how basic physics principles that apply to fixed-mass systems are applied to a mass moving through a region to eventually arrive at a set of control-volume equations.
	www.nd.edu /~ame/undergrad/me.327.html (683 words)

	Get a USB 2.0 Flash drive FREE with Simulis: News from ProSim (Site not responding. Last check: 2007-10-24)
		Simulis Thermodynamics is a software component dedicated to mixture properties and equilibrium calculations giving engineers and software developers rigorous physical properties of all kinds of fluids
		Simulis Thermodynamics is a software component dedicated to mixture properties and equilibrium calculations that provides engineers and software developers with rigorous physical properties for all kinds of fluids.
		From the 1st September 2005 to the 30th November 2005, for any order of (at least) one permanent license of Simulis Thermodynamics, ProSim offers a FREE 128mb USB 2.0 flash drive.
	www.processingtalk.com /news/pim/pim110.html (196 words)

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