Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

K specific conductivity

Compound Melting point K Boiling point K Specific conductance Ohm 1 cm 1 at 1200 K Decomposition potential E at 1073 K ... [Pg.698]

TR - transition region nearly pure (97-100%) ionic conductor mixed with second compound K - specific conductivity ohm cm D.C. - dielectric constant r - viscosity, centipoises ... [Pg.294]

Figure 6. LFCM volt-ampere characteristic at T 550 K. Specific conductivity can be found from its slope. Figure 6. LFCM volt-ampere characteristic at T 550 K. Specific conductivity can be found from its slope.
The resistance due to a circular junction is given by / = /2ak, where a is the radius of the junction and k is specific conductivity of the metal. For the case of two steel plates, the measured resistance is 5 x 10" Q for a load of 50 kg the yield pressure of steel is 60 kg/mm, and the specific resistance is 5x 10 Q/cm. Calculate the number of junctions, assuming that it is their combined resistance that is giving the measured value. [Pg.458]

Conductivity. The standard unit of conductance is electrolytic conductivity (formerly called specific conductance) k, which is defined as the reciprocal of the resistance of a 1-m cube of liquid at a specified temperature m— ]. See Table 8.33 and the definition of the cell constant. [Pg.995]

Material CAS Registry Number Formula Mp, °C Tme specific gravity, g/cm Mean J/(kg-K)" specific heat Temp range, °C Thermal conductivity, W/(m-K) 500° 1000° C C Linear thermal expansion coefficient peTC X 10 from 20-1000°C... [Pg.26]

Quantitative Relationship of Conductivity and Antistatic Action. Assuming that an antistatic finish forms a continuous layer, the conductance it contributes to the fiber is proportional to the volume or weight and specific conductance of the finish. As long as the assumption of continuity is fulfilled it does not matter whether the finish surrounds fine or coarse fibers. Assuming a cylindrical filament of length 1 cm and radius r, denoting the thickness of the finish layer as Ar and the specific conductance of the finish k, the conductance R of the finish layer is given by the equation (84) ... [Pg.292]

The specific conductance of the finish on the filament k is not necessarily the specific conductance it exhibits in its bulk condition. For instance, absorption of ions from the finish by the fiber can reduce the conductivity. The specific conductance greatiy depends on the amount of moisture present. Figure 4a shows the experimentally observed resistance of yam as a function of the amount of antistatic agent appHed in comparison to the calculated resistance. Below 0.05% of antistatic agent the experimental values show a lower conductivity than calculated this may be due to a lack of continuity of the antistatic agent. [Pg.292]

Cp = specific heat e = specific internal energy h = enthalpy k =therm conductivity p = pressure, s = specific entropy t = temperature T = absolute temperature u = specific internal energy [L = viscosity V = specific volume f = subscript denoting saturated hquid g = subscript denoting saturated vapor... [Pg.249]

For sources, units, and remarks, see Table 2-228. v = specific volume, mVkg h = specific enthalpy, kj/kg s = specific entropy, kJ/(kg-K) c = specific beat at constant pressure, kJ/(kg-K) i = viscosity, 10 Pa-s and k = tberni conductivity, VW(m-K). For specific beat ratio, see Table 2-200 for Prandtl number, see Table 2-369. [Pg.252]

Material Density, kg/nP Emissivity Specific heat, kJ/(kg-K) Thermal conductivity, W/(m-K) Thermal diffusivity, mVs X lO "... [Pg.381]

C), (cmVohm geqmv) K = Ci/R = specific conductance, (ohm cm) h C = solution concentration, (gequiv/ ) Ot = conductance cell constant (measured), (cm ) R = solution electrical resistance, which is measured (ohm) and/(C) = a complicated function of concentration. The resulting equation of the electrolyte diffusivity is... [Pg.599]

Material >ensity (kg/m ) Specific heat (kJ/kg K) Thermal conductivity (W/m/K) Coeff. of therm exp (/Am/m/ C) Thermal dififusivity (m /s) X 10" Glass transition Temp, TgCO Max. operating, Temp (°C)... [Pg.31]

X, y, z are empirical exponents k = thermal conductivity d = heat transfer tube diameter p = density of fluid or specific gravity p = viscosity of fluid... [Pg.319]

Figure 10-50C. Tube-side (inside tubes) liquid film heat transfer coefficient for Dowtherm . A fluid inside pipes/tubes, turbulent flow only. Note h= average film coefficient, Btu/hr-ft -°F d = inside tube diameter, in. G = mass velocity, Ib/sec/ft v = fluid velocity, ft/sec k = thermal conductivity, Btu/hr (ft )(°F/ft) n, = viscosity, lb/(hr)(ft) Cp = specific heat, Btu/(lb)(°F). (Used by permission Engineering Manual for Dowtherm Heat Transfer Fluids, 1991. The Dow Chemical Co.)... Figure 10-50C. Tube-side (inside tubes) liquid film heat transfer coefficient for Dowtherm . A fluid inside pipes/tubes, turbulent flow only. Note h= average film coefficient, Btu/hr-ft -°F d = inside tube diameter, in. G = mass velocity, Ib/sec/ft v = fluid velocity, ft/sec k = thermal conductivity, Btu/hr (ft )(°F/ft) n, = viscosity, lb/(hr)(ft) Cp = specific heat, Btu/(lb)(°F). (Used by permission Engineering Manual for Dowtherm Heat Transfer Fluids, 1991. The Dow Chemical Co.)...
Due to the fact that K2TaF7 - KF is considered to be part of the TaF5 - KF binary system, while the K2TaF7 - KCI system is a component of the interconnected ternary system K+, Ta5+//F", Cl", the single-molecule conductivity and activation energy of the systems was calculated based on density and specific conductivity data [322, 324]. Molar conductivity (p) depends on the absolute temperature (T), according to the following exponential equation ... [Pg.153]

Sodium reduction development directions, 336 diluted melts, 331-332 of K-Salt, 327-328 principals, 326 Solid-phase interaction mechanism, 34-37 niobium oxyfluorides, 26-31 tantalum oxyfluorides, 32-34 Solubility diagrams (NH4)5Nb3OF18, 22 K2NbF7 in HF solutions, 14 K2TaF7 in HF solutions, 14 RbsNbjOF,, 22-23 Solubility of peroxides, 307 Specific conductivity, 153, 164 Spontaneous polarization, 223 Structural characteristics for X Me=8, 61,... [Pg.388]


See other pages where K specific conductivity is mentioned: [Pg.600]    [Pg.126]    [Pg.116]    [Pg.479]    [Pg.607]    [Pg.147]    [Pg.172]    [Pg.155]    [Pg.600]    [Pg.130]    [Pg.83]    [Pg.3]    [Pg.397]    [Pg.136]    [Pg.600]    [Pg.126]    [Pg.116]    [Pg.479]    [Pg.607]    [Pg.147]    [Pg.172]    [Pg.155]    [Pg.600]    [Pg.130]    [Pg.83]    [Pg.3]    [Pg.397]    [Pg.136]    [Pg.187]    [Pg.501]    [Pg.66]    [Pg.306]    [Pg.89]    [Pg.517]    [Pg.517]    [Pg.245]    [Pg.350]    [Pg.358]    [Pg.453]    [Pg.589]    [Pg.627]    [Pg.293]    [Pg.93]    [Pg.116]    [Pg.223]    [Pg.40]    [Pg.519]   
See also in sourсe #XX -- [ Pg.181 ]




SEARCH



K conductivity

Specific conductance

Specific conductivity

© 2024 chempedia.info