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PRESSURE DROP and FRICTION FACTOR IN HELICAL HEAT EXCHANGERS UNDER NONISOTHERMAL and TURBULENT FLOW CONDITIONS 1
Author(s) -
CORONEL P.,
SANDEEP K.P.
Publication year - 2003
Publication title -
journal of food process engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 45
eISSN - 1745-4530
pISSN - 0145-8876
DOI - 10.1111/j.1745-4530.2003.tb00602.x
Subject(s) - pressure drop , turbulence , heat exchanger , friction factor , mechanics , reynolds number , thermodynamics , curvature , chemistry , dynamic scraped surface heat exchanger , materials science , drop (telecommunication) , heat transfer , physics , heat transfer coefficient , mathematics , geometry , mechanical engineering , critical heat flux , engineering
ABSTRACT This study involved the determination of pressure drop and friction factor (f) in helical heat exchangers under turbulent flow conditions. the experiments were conducted in helical heat exchangers, with coils of two different curvatures ratios (d/D = 0.114 and 0.078) at various flow rates (9.46 × 10 −5 ‐ 6.31 × 10 −4 m 3 /s) and end‐point temperatures (20, 93.3, 121, 149C). the computed friction factor (f) in the helical heat exchanger was compared to published correlations, and it was found that the experimental data was in good agreement with them. In addition, correlations to determine pressure drop based on the Reynolds number, curvature ratio, and temperature were developed.