Experimental Study on Air-Side Heat Transfer Enhancement of Fin-Tube Heat Exchanger under Vibrational Conditions

Fin-tube heat exchangers have been used in wide range of industries including refrigeration, air conditioning, and food processing owing to its unique configuration. In most applications of fin-tube heat exchangers, the performance is highly constricted by the heat resistance of air, owing to its low heat transfer coefficient. Thus, to make more effective and compact heat transfer system, it is essential to enhance the air-side heat transfer coefficient. The heat transfer enhancement technique is largely divided into two parts: passive and active techniques. Passive technique refers to an enhancement method which does not require additional energy input. In terms of the active technique, which requires additional energy input, various enhancement techniques are under research. Among those, enhancement by forced vibration attracted the interest of many researchers.