Design and Development of an Experimental Apparatus for the Study of Minor Loss of the Mini-Scale Fittings

Abstract

In this study, three types of elbows configurations (45°elbow, 90°elbow, 135°elbow) were consideredin the minor loss measurementexperiments. The test section underadiabaticcondition was a Stainless SteelGrade-316 tubewith 2mm diameter size.The experimental range of Reynolds number was from 700 to 10,000. Before measuring the minor loss of the fittings, the experimental setup was verified by the current horizontal straight tube data compared with the well-established correlations. The minor loss data of different elbows were collected in the rangesof 700 and 10,000. The resultsareshownthat the 135°elbow had the largest minor loss, the 45°elbow had the smallest minor loss, and 90°was in between. Comparing with the existing tabulated valuesor correlations, the percentage of deviation iscomputed.