Experimental Investigation of Heat Transfer Enhancement by Forced Vibrations

Results of an experimental investigation of the effect of vibration on the parameters of boiling and heat transfer are presented. Vibration was exerted in two different ways: by vibrating the heater surface and by creating variable pressure of the column over the surface of the liquid. The effect of the amplitude and frequency of vibrations of the heater on the coefficient of heat transfer and critical heat load was determined. Experiments showed that low-frequency vibrations of liquid stabilized the process of bubble formation, led to an increase in their mean detachment frequency and in the coefficient of heat transfer.