ARTICLE:

• Frequency Response Characteristics of a Tube-Type Condenser with Time Varying Heat Flux and Two-Phase Pressure Drop  download article

B. L. Bhatt
Oakland University Rochester, Michigan USA

G. L. Wedekind
Oakland University Rochester, Michigan USA

ABSTRACT

In a tube-type condenser involving complete condensation, small changes in the inlet vapor flowrate momentarily cause very large transient surges in the outlet liquid flowrate. Sinusoidal inlet flowrate . variations of small amplitude also cause outlet flowrates of large amplitude. Compressibility effects tend to attenuate the amplitude of these oscillations. The System Mean Void Fraction (SMVF) model was used to predict the frequency response characteristics with and without compressibility. In addition to compressibility effects, the SMVF model is extended to include time varying heat flux, a transient two-phase pressure drop and liquid inertia. The SMVF model predictions are compared with the available experimental data and the theoretical models. SMVF model predictions represent the data better.

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