The first-year goal of this study was to better understand the underlying physics affecting the separation capability of TCAP in order to provide a strong technical basis for design of a scaled up mega-TCAP, of interest for fusion and other potential applications. Assessing mass transfer factors, researchers performed an extensive review and evaluation of prior theoretical work, mathematical models, and experiments on chromatographic separation. This effort resulted in the discovery of a previously unidentified factor impacting TCAP column scale-up. A model derived by J. Calvin Giddings indicates that the combination of coiling a packed column and increasing the column tube radius will decrease column separative performance. FY2019 Objectives Understand the fundamental physics of the efficiency losses previously noted during the 2004 HT-TCAP scale up and devise means to overcome them through the following: • Determine the factors affecting and affected by TCAP gas mass transfer • Determine the factors affecting and affected by TCAP heat transfer.
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