Response of Rotary Regenerators to Step Changes in Mass Rates

Rotary regenerator exit gas temperature responses to step changes in mass flow rates are presented. When the step change is the same for both gases the responses are shown to have a decaying oscillation to the final values of the exit gas temperatures. The source of the oscillations is explained. The responses are found by dividing the regenerator into pie-shaped segments and approximating the area-mean gas temperature leaving a segment as the temperature of the gas leaving a small regenerator located on the central radius of the segment.