Evaluation of Heat Transfer Performance of Hypervapotron Elements in Two Phase Flow Devised in Indian test facility

Abstract

Abstract Indian Test Facility (INTF) is a testbed to carry out neutral beam experiments where beam with peak power densities reach about 66 MW/m2 and incident on calorimeters. To survive such thermal fluxes, Hypervapotron (HV) elements are devised in designing calorimeters. The HV element has a finned surface inside and working in a subcooled nucleate boiling regime with water as a 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.