| Title |
Effects of Flow Resonance on Heat Transfer Enhancement and Pressure Drop in a Plate Heat Exchanger |
| Keywords |
Plate heat exchanger ; 판형열교환기 ; Flow resonance ; 유동공진 ; Plate pitch ; 플레이트 피치 ; Chevron angle ; 세브론각 ; Heat transfer enhancement ; 열전달향상 ; Pressure drop ; 압력강하 |
| Abstract |
Heat transfer enhancement of three types of brazed plate heat exchangers has been evaluated experimentally. The effects of flow resonance in a plate heat exchanger on the heat transfer rate and pressure drop have been investigated in a wide range of mass flow rates in detail. The problem is of particular interest in the innovative design of a plate heat exchanger by flow resonance. The results obtained indicate that both heat transfer coefficient and pressure drop are increased as mass flow rate is increased, as expected. It is also found that the heat transfer enhancement is increased with an increase in the plate pitch, while the heat transfer is decreased with a decrease in the chevron angle. Pressure drop also increased with an increase in the plate pitch and with a decrease in the chevron angle. Heat transfer enhancement in the plate heat exchangers is maximized by flow resonance and the resonance frequency of the present plate heat exchangers is found to be in the range of 10～15 Hz. |