기구적 설계변수에 따른 판형열교환기의 성능특성

Abstract

Key Words: PlateHeatExchanger(판형열교환기),HeatTransfer(열전달),PressureDrop(압력강하),DesignParameter(설계변수),Correlation(상관관계)초록: 판형열교환기는높은효율로인하여다양한산업분야에사용되고있으며, 판형열교환기의성능특성을파악하기위해많은연구가이루어졌다.하지만세브론각을제외한판형열교환기의기구적설계변수에따른성능특성파악은상대적으로많이부족한실정이다. 본연구는판형열교환기의기구적설계변수에따른열전달및압력강하성능특성을파악하기위해서세브론각, 전열판골깊이, 전열판골길이, 전열판개수등을변화시키며실험을수행하였다. 실험결과를바탕으로판형열교환기의다양한기구적설계변수를반영한열전달및압력강하성능특성상관식을제안하였다. 실험데이터와제안된판형열교환기상관식을이용해예측된데이터를비교한결과약95%이상의데이터가±10%오차범위내에존재함을알수있었다.Abstract: Plate heat exchangers have been widely used in many industrial applications because of theircompactness and high efficiency. Even though plate heat exchangers have been investigated extensively,studies on the effects of geometric parameters other than the chevron angle are very limited in the openliterature. In this study, the effects of the chevron angle, corrugation length, corrugation depth, and thenumber of plates on the heat transfer and pressure drop characteristics of plate heat exchangers wereinvestigated experimentally. Based on the experimental results, empirical correlations were proposed. Morethan 95% of the predictions made based on the correlations had relative deviations of less than ±10% whencomparedwiththemeasureddata.