| Title |
Heat Transfer and Pressure Drop Characteristics of Brazed Plate Heat Exchangers with Single-Phase Flow |
| Authors |
김만배(Man Bae Kim) ; 박창용(Chang Yong Park) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2014.26.11.522 |
| Keywords |
판형열교환기 ; 열전달 ; 압력강하 ; 용량 ; 단상유동 Brazed plate heat exchanger ; Heat transfer ; Pressure drop ; Capacity ; Single-phase flow |
| Abstract |
This experimental study measured and analyzed the heat transfer and pressure drop performance of brazed plate heat exchangers. Heat exchangers with different plate numbers of 10, 20, 30, and 40 were used for measurement, and their plate pattern was identical. The experiment was performed with distilled water, by changing the hot-side flow rate, with the cold-side flow rate fixed. The experimental results were compared with the calculated values by correlations based on gasketed plate heat exchangers, and showed that the heat transfer performance and pressure drop of brazed plated heat exchangers were higher than those of gasketed plate heat exchangers. From the variation of the friction factor, it could be inferred that in the flow channels of brazed plate heat exchangers, turbulent flow occurred at Reynolds numbers higher than 500. A new correlation to predict the Nusselt number was developed, and its absolute average deviation was 2.62%, compared with the values from the experimental data. |