Evaluation of heat transfer performance of hypervapotron elements devised in Indian test facility in single and two phase by numerical and experimental approach for steady state operations

Indian Test facility is a test bed to carry out neutral beam experiments where incident beam power densities reach about 66 MW/m². To survive such thermal fluxes, Hypervapotron (HV) elements are devised, which has finned surface inside and working in subcooled nucleate boiling regime with water as coolant. HV elements are efficient heat transfer technologies made from high thermal conductive materials (CuCrZr – Copper alloy) and capable of removing heat flux densities about 10-30 MW/m2 w.r.t various coolant flow conditions. In this paper, efforts are undergone to evaluate heat transfer performance of these elements in three approaches – a) 3D FEA using Empirical correlations available in literature, b) 2D CFD in ANSYS CFX, c) Conducting high heat flux experiments on the HV element, and compared the methodologies and estimate the safe operating boundaries for INTF operation. (author)