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  • Wiley-Blackwell  (39)
  • 1960-1964  (39)
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  • 1
    Digitale Medien
    Digitale Medien
    Simultaneous mass and heat transfer in the flow of gases past single spheres (1961)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 7 (1961), S. 78-80 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The results obtained by the evaporation of water and nitrobenzene in air from celite spheres in conjunction with the prevailing surface temperature have permitted the simultaneous determination of mass and heat transfer factors. The spheres used were 1.42, 1.88, and 2.00 in. in diameter. The experimental results of this study show that an essentially direct correspondence exists for mass and heat transfer in the flow of fluids past single spheres.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690070119
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  • 2
    Digitale Medien
    Digitale Medien
    A reduced state vapor-pressure relationship and its application to hydrocarbons (1962)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 8 (1962), S. 357-358 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The Frost-Kalkwarf vapor-pressure equation has been modified to include as variables the reduced temperature and pressure of the substance. The resulting relationship was found to contain a universal constant δ = 0.1832 and three other constants α, β, and γ, which are characteristic of the substance. Relationships between α, β, and γ were found to exist, and thus a vapor-pressure equation was produced which contains only one characteristic contant β and which is capable of predicting vapor pressures of pure substances up to the critical point.This vapor-pressure relationship has been applied to hydrocarbons of all types, including normal paraffins, isoparaffins, olefins, diolefins, acetylenes, naphthenes, and aromatics. In these calculations values of β were estimated from the molecular structure of the hydrocarbons. For hydrocarbons the approach developed in this study was found to reproduce experimental vapor pressures with an average deviation of 2.7% for 456 experimental points representing fifty four hydrocarbons.This study indicates that if reliable vapor-pressure data, however meager, are available for a hydrocarbon, these data can be used to obtain constants which enable the prediction of the critical temperature and the critical pressure of the substance.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690080318
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  • 3
    Digitale Medien
    Digitale Medien
    The critical temperatures of multicomponent hydrocarbon systems (1962)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 8 (1962), S. 550-553 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: The critical temperature of any multicomponent hydrocarbon system may be established solely from the normal boiling points of the pure constituents. Such mixtures may include normal paraffins, isoparaffins, olefins, acetylenes, naphthenes, and aromatics and may contain an unlimited number of components.An expression has been developed for the prediction of the critical temperatures of mixtures and has been tested on fifty-five hydrocarbon systems containing from two to five components. For 208 binary mixtures the deviations from reported values were calculated, and the maximum deviations resulting from each system were averaged for the forty-one binary systems to produce an average maximum deviation of 0.91% based on degrees absolute. For twenty-eight multicomponent mixtures reported for nine ternary, two quaternary, and three quinary systems the average deviation was 1.03%.This method presents a simple and accurate means of establishing the critical temperature of any multicomponent hydrocarbon mixture as long as the ratio of the normal boiling points of the heaviest and lightest components present in the mixture does not exceed the prescribed limits.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690080426
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  • 4
    Digitale Medien
    Digitale Medien
    Mass and heat transfer in the flow of fluids through fixed and fluidized beds of spherical particles (1962)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 8 (1962), S. 608-610 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690080509
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  • 5
    Digitale Medien
    Digitale Medien
    The transport properties of carbon dioxide (1961)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 7 (1961), S. 625-631 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Experimental viscosity, thermal conductivity, and self-diffusivity data available in the literature for carbon dioxide have been critically reviewed and used to develop reduced state correlations of the transport properties for this substance. These correlations should apply to nonpolar compounds having critical compressibility factors approximately equal to that of carbon dioxide, zc = 0.275.In order to establish the dependence of these transport properties in the high pressure and liquid state regions, use has been made of relationships between the residual properties, μ-μ*, k-k*, and (PD)*-(PD) and density. These residual quantities represent the differences between the values of the properties at any pressure and temperature and those at atmospheric pressure and the same temperature. These relationships also allow the determination of the values of the transport properties at the critical point. The resulting critical values along with the residual relationships enabled the construction of reduced state correlations for viscosity, thermal conductivity, and the product of self-diffusivity and pressure for carbon dioxide.These correlations extend from the saturated vapor and liquid states to reduced temperatures of TR = 10 and reduced pressures of PR = 50. Comparisons made between values resulting from these correlations and corresponding experimental values, including the region of high pressure for both the gaseous and liquid states and the vicinity of the critical point, produced an average deviation of 2.0% for viscosity, 1.4% for thermal conductivity, and 5.9% for self-diffusivity.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690070419
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  • 6
    Digitale Medien
    Digitale Medien
    The critical temperatures and pressures of binary systems: Hydrocarbons of all types and hydrogen (1960)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 6 (1960), S. 561-566 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: A method of the prediction of the critical temperatures and pressures of mixtures has been developed, primarily on the basis of data for binary hydrocarbon systems available in the literature. These mixtures may contain aliphatic (normal paraffinic, isoparaffinic, and olefinic), naphthenic, and aromatic hydrocarbons as well as hydrogen. The mixtures may be of varying complexity, and, although this method has been tested chiefly on binary systems, it has been applied to a limited number of mixtures containing more than two components.This study introduces two dimensionless temperature parameters, γ and θ, which account for the composition of the mixture and for the nature of the components involved. These parameters are defined by the molar average boiling point, the boiling point, and the dew point, all at atmospheric pressure. For a given composition the ratios of the actual critical values to the pseudocritical values have been found to be functions of γ and θ. These relationships are presented graphically and permit the direct calculation of the critical temperature and pressure of the mixture.The validity of this method has been checked not only on the binary systems used to obtain these correlations but also on binary and ternary systems which have not been included in this development. Critical values for eighteen systems, consisting primarily of two components, have been calculated for ninety-six compositions and have been compared with the experimental values presented in the literature. For temperature the average absolute deviation has been found to be 0.76% (based on degrees Rankine) and for pressure, 2.7%. The results for the majority of these systems have been compared with values calculated by the methods of Eilerts et al. (4), Organick and Brown (15), Kurata and Katz (11), Mayfield (12), and Smith and Watson (23).
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690060411
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  • 7
    Digitale Medien
    Digitale Medien
    Thermal conductivity: Reduced state correlation for ethylene and its application to gaseous aliphatic hydrocarbons and their derivatives at moderate pressures (1960)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 6 (1960), S. 676-681 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: By means of a procedure similar to that used for the inert gases (19) and methane (20) a reduced thermal conductivity correlation was developed for ethylene from experimental data available in the literature (2, 3, 4, 9, 13). The resulting correlation permits the prediction of thermal conductivities for gaseous and liquid ethylene in the temperature range TR = 0.4 to TR = 6.0 and for pressures up to PR = 50. For pressures below PR = 0.5 this correlation was found to apply to gaseous aliphatic hydrocarbons and their derivatives but not to cyclic compounds. For these aliphatic hydrocarbons and their derivatives the relation between thermal conductivity at atmospheric pressure and temperature is k*/k+c = 0.364 T1.786R.Experimental thermal conductivities of ethylene in the liquid state and dense-phase region were compared with values predicted by the reduced-state correlation. The average deviation for thirty-six experimental points was 1.8%. Gaseous-state data at atmospheric pressure of alkanes, alkenes, alkynes, alcohols, ethers, halogenated derivatives, esters, aldehydes, ketones, amines, nitriles, and other aliphatic compounds were also compared with values predicted by this correlation. For 414 experimental points the average deviation was 1.63%.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690060431
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  • 8
    Digitale Medien
    Digitale Medien
    The viscosity of nonpolar gases at normal pressures (1961)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 7 (1961), S. 611-615 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Experimental viscosity data available in the literature for fifty-two nonpolar gases have been utilized in conjunction with a dimensional analysis approach to relate the viscosity at atmospheric pressure to temperature. The substances investigated are both simple and complex and include the inert and diatomic gases, carbon dioxide, carbon disulfide, carbon tetrachloride, and the hydrocarbons up to n-nonane, including normal and isoparaffins, olefins, acetylenes, naphthenes, and aromatics. The dependence of the product μ*ξ on reduced temperature was found to be the same for all of these substances, except helium and hydrogen.Both theoretical considerations and dimensional analysis indicate that the viscosity product of a gas might depend on the compressibility factor at the critical point. However the results of this study show that for these nonpolar substances this viscosity product at normal pressure is independent of zc and depends only on temperature.The only information required for the calculation of viscosity with the relationships developed in this study is the molecular weight, critical temperature, and critical pressure of the substance. Values calculated with these relationships have been compared with 785 experimental points from all reliable sources of experimental data and produced an average deviation of 1.77%. Comparisons have also been made with the values calculated with the Licht-Stechert and Bromley-Wilke equations.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690070416
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  • 9
    Digitale Medien
    Digitale Medien
    Experimental determination of critical temperatures and pressures of mixtures: The methane-ethane-n-butane system (1962)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 8 (1962), S. 209-213 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: An experimental unit has been designed and constructed for the study of critical phenomena in multicomponent systems. This unit has been built to utilize a new visual PV̇T cell capable of operating at temperatures up to 300°F. and pressures to 10,000 lb./sq. in. abs. This cell is of the liquid piston type with mercury as the pressurizing fluid and affords unobstructed visual observation of its contents. The dependability of the unit has been tested on two mixtures of ethane and n-butane. Phase equilibria data were obtained, which in turn were used to establish the critical temperture and pressure.Critical temperatures and pressures have been determined for six different compositions of the methane-ethane-n-butane system. These mixtures consisted of two series, each of three compositions differing only in methane content. The data obtained from them, in conjunction with previously reported critical values for the binaries of this system, have been utilized to generate the complete critical locus for the ternary system. The results for the six mixtures of this study have been compared with critical values predicted by methods available in the literature.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690080216
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  • 10
    Digitale Medien
    Digitale Medien
    A reduced equation of state for gaseous and liquid substances (1963)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 9 (1963), S. 269-272 
    Details
    ISSN: 0001-1541
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Experimental pressure-volume-temperature data available in the literature for argon have been utilized to produce relationships for the prediction of densities for reduced temperatures up to TR = 3.38 and reduced pressures up to PR = 50. A plot of reduced pressure vs. reduced temperature for constant reduced density was made for argon, in which each isochor terminates at the vapor-pressure curve. This information was utilized to develop a third degree polynomial relationship between the normalized pressure and the normalized temperature for each isochor by the method of least squares. This method was also used to establish the dependence of the coefficients of the polynomials on reduced density.The resulting relationships permitted the calculation of desities for argon from the critical constants, vapor pressure function, and the saturated vapor and liquid densities of the substance with a trial-and-error procedure. For fifty-seven densities for the dense gaseous and liquid phases of argon an average deviation of 1.29% with a maximum value of 3.66% resulted between calculated and reported values. The relationships developed in theis study have also been found to be applicable to nitrogen, oxygen, carbon monoxide, and methane, whose critical compressibility factors are similar to that of argon.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/aic.690090225
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