The Rayleigh equation applies to an open system from which material is removed continuously under condition of a constant fractionation factor. However, such processes can proceed under different boundary conditions, even when the fractionation factors are the same.

Rayleigh fractionation describes the evolution of a system with multiple phases in which one phase is continuously removed from the system through fractional distillation. It is used in particular to describe isotopic enrichment or depletion as material moves between reservoirs in an equilibrium process .

Nov 19, 2016 · This additional equation, called the Rayleigh equation (Rayleigh, 1902), is derived from a differential mass balance on the light component. Assume that the holdup in the column and in the accumulator is negligible.

This was before stable isotopes had been discovered, but it turns out to perfectly predict the theoretical rate at which a reservoir of water will change isotope composition as it loses water to another reservoir through evaporation, freezing, etcetera. The equation Rayleigh proposed is show here as Equation 7 (Clark, 2015).

This equation was originally use by Lord Rayleigh to describe the fractional distillation of two liquids. The equation describes the partitioning of constituents between two reservoirs that are depleted at different rates.

Differential distillation refers to a batch distillation in which only one vaporization sate is involved. Lard Rayleigh developed a mathematical equation which represents differential distillation.

The Rayleigh distillation equation; Francis Albarède, Ecole Normale Supérieure, Lyon; Foreword by Albrecht W. Hofmann; Book: Geochemistry; Online publication: 05 June 2012; Chapter DOI: https://doi.org/10.1017/CBO9781139165006.017

The Rayleigh distillation equation relates the initial (Ro) and transient (Rt) stable isotope ratios of a reservoir to the fraction (f) of the initial material that remains (often equivalent to Ct/Co) when product is removed with a constant fractionation factor ( ): o t R R = f ( -1) = (1) o t C C (1) for 18O, equation (1) can be recast as: 18O ...

Feb 1, 2004 · Values of α are estimated from the C and R values by using the Rayleigh distillation equation (RDE).

Nov 16, 2011 · Simple distillation, also known as Rayleigh distillation or differential distillation, is the most elementary example of batch distillation. In this distillation system, the vapor is removed from the still during a particular time interval and is condensed in the condenser.