Power Perturbation Technique for the Measurement of Fuel-to-Coolant Heat-Transfer Coefficients in Fast Reactors

摘要

A technique is described which provides a method of obtaining average fuel-to-coolant heat-transfer coefficients for individual fuel subassemblies in fast reactors. A series of experiments on the UK prototype fast reactor over the period 1977-1979 has demonstrated that the technique is simple, requires no special instrumentation other than thermocouples to monitor coolant outlet temperatures, and that the measurement can be made during normal reactor operation. Thus it is possible to determine how heat-transfer coefficients change with operating conditions and with the degree of burn up in the fuel. (Atomindex citation 14:756075)