대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제25권2호
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  • Pages.171-179
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  • 2001
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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R-22를 사용한 용접형 판형 열교환기의 응축열전달 및 압력강하 특성에 관한 연구

Study on Condensation Heat Transfer and Pressure Drop Characteristics of R-22 in Brazed Plate Heat Exchanger

  • 발행 : 2001.02.01
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초록

Experimental study has been carried out on the characteristics of pressure drop and heat transfer of brazed plate heat exchangers using R-22. Data are presented for the following range of variables: the mass flux (40∼90kg/$m^2$s), chevron angle ($20^{\circ}$, $35^{\circ}$, $45^{\circ}$) and inlet pressure of the refrigerant (1.4 and 1.6MPa). For both subcooled and two-phase flow, as chevron angle increases, pressure drop and heat transfer coefficient decrease. Condensation heat transfer coefficient and pressure drop were compared with the previously proposed correlations. Among therm, Traviss correlation agreed with experimental results within -40%∼-84% for heat transfer coefficient and -59%∼62% for pressure drop.

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참고문헌

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