โ Scribed by D.J. Close; P.J. Banks
No coin nor oath required. For personal study only.
This paper forms part of the development of an analogy between heat transfer and coupled heat and mass transfer. It has been shown that for a particular case of coupled heat and mass transfer between a packed sorbent bed and the fluid flowing through, the linearised governing equations have the same form as those for heat transfer alone in the system. In that case transport of heat and sorbate between the fluid mixture and sorbent was determined by surface transfer coefficients, and the Lewis relation between these coefficients was satisfied.
The Lewis relation is far from satisfied for many fluid mixtures, and when lumped transfer coefficients are employed to account for diffusion in the sorbent. The effect of such departures on system behaviour is explored by a numerical method. Also, the above analogy method is extended to deal with such systems. Comparison of results from these two methods shows that the extended analogy method gives a fairly close representation of the system behaviour resulting from a step change in the inlet fluid state.
๐ SIMILAR VOLUMES
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