Rates of absorption of oxygen into blood under turbulent conditions

The Chemical Engineering Journal, Elsevier Sequoia S.A., Lausanne - Printed in The Netherlands

300

Errata to Volume

3

Necessary Conditions for the Existence of AsymmetricComposition and Temperature Profiles in Catalyst Pellets

Rates of Absorption of Oxygen into Blood under Turbulent Conditions Shigeo Katoh and Fumitake

Yoshida

Chem. Eng. J., 3 (1972) 276-285

R. Jackson and F.J.M. Horn Chem. Eng. J., 3 (1972) 82-87. Unfortunately, an important part of the first paragraph of the abstract has been omitted. The complete abstract is reproduced below.

The ordinate of Fig. 8 that appears on page 280 should be labelled: “kinematic cm/s)

viscosity, cSt” (centistokes

rather than

Abstract For a single irreversible chemical reaction in an infinite catalyst slab with a uniform environment, it is shown that temperature and composition profiles unsymmetric about the center plane of the slab may occur only when there are concentrated heat and mass transfer resistances at the boundaries, and when certain other conditions are satisfied by the boundary heat and mass transfer coefficients, the effective thermal conductivity and diffusion coefficient in the slab, and the heat of reaction. In particular, for a conventional irreversible reaction, it is found that asymmetric profiles may exist only if the reaction is exothermic and Sh’ > Nu’, where Sh’ and Nu’ are the modified Sherwood and Nusselt numbers.

Erratum

to Volume

V.V. Chavan and J. Ulbrecht Chem. Eng. .I, 3 (1972) 308-3 11 Equation (7) as it appears on page 308 is incomplete. The correct equation reads:

x(1 - [l - 2(w/d)]’ }

(7)

4

Break-up of a Capillary Jet of a Non-Newtonian having a Yield Stress M. Goldin, R. Pfeffer and R. Shinnar Chem. Eng. .I., 4 (1972) 8-20

Chem. Eng. J., 4 (1972)

Power Correlation for Helical Ribbon Impellers in Inelastic non-Newtonian Fluids

Fluid

The last term of equation (2) given on page 10 should be deleted. The correct equation reads: F,=--

Ka 2

I,, (Ka) 11 (Ka)

(2)