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http://dx.doi.org/10.6110/KJACR.2014.26.11.522

Heat Transfer and Pressure Drop Characteristics of Brazed Plate Heat Exchangers with Single-Phase Flow  

Kim, Man Bae (Graduate School of Engineering, Seoul National University of Science and Technology)
Park, Chang Yong (Department of Mechanical System Design Engineering, Seoul National University of Science and Technology)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.26, no.11, 2014 , pp. 522-528 More about this Journal
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.
Keywords
Brazed plate heat exchanger; Heat transfer; Pressure drop; Capacity; Single-phase flow;
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Times Cited By KSCI : 1  (Citation Analysis)
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