Look-Up Table for Trans-Critical Heat Transfer

Abstract

This paper presents a progress report on the derivation of a heat transfer look-up table (LUT) for the region near the critical point. The intended range of application of the LUT is sufficiently wide to span all conditions for which conventional single-phase correlations do not apply.The UO database has been compared to existing correlations for single phase, near-critical (NC) and supercritical (SC) heat transfer. The parametric trends of the predicted accuracy of the more promising correlations are described. The LUT domain is subdivided into sub-regions such as subcritical liquid, subcritical vapour, subcritical two-phase heat transfer, SC liquid-like, SC vapour-like and near-critical or pseudo-critical region. For each sub-region, the best correlation is identified - this correlation will subsequently be used for the construction of a preliminary skeleton LUT, which will be updated by experimental data suitably normalized.