DETERMINATION OF HEAT TRANSFER COEFFICIENT INSIDE STIRRED JACKETED VESSELS CONTAINING SUSPENSIONS

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HAMIDI ALI ASGHAR; KHODAYARI M.

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Journal: Year:2002 | Volume:36 | Issue:1 (75) Page(s): 107-113

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Title

DETERMINATION OF HEAT TRANSFER COEFFICIENT INSIDE STIRRED JACKETED VESSELS CONTAINING SUSPENSIONS

Author(s)

HAMIDI ALI ASGHAR | KHODAYARI M. | Issue Writer Certificate

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Abstract

Thermal design of vessels containing suspensions requires a proper knowledge of the heat transfer coefficient inside the vessel. A number of process vessels with reacting and non - reating systems contain suspensions which is stirred using a mechanical stirrer. The heat transfer surface is usually a jacket surrounding the vessel. The coefficient of convection heat transfer inside these vessels is influenced by several parameters such as properties of the liquid and the particles in the suspension, mean size of the suspended particles, type and dimensions of the stirrer and the revolution speed of the stirrer. In this experimental study variation of the heat transfer coefficient with all of the above parameters except the type of the liquid is investigated. Sand particles with various mean sizes are suspended in water contained in a mechanically stirred vessel. The type of stirrer chosen has been a four - blade 45³ pitch turbine stirrer. The content of the vessel is heated using an electrical coil and is cooled using a steady water flow in the jacket of the vessel. The experimental parameters were varied within the following range as: Mean particle size 0.2-0.8mm. %Wt concentration of particles 2.14-10.3 Stirrer revolution speed 700-1400 r.p.m. By performing a series of experiments, measuring the temperature at various locations in the vessel and analyzing the data gathered based on overall heat balances, the amount of the heat transfer coefficient for each experiment is determined. Finally a dimensionless correlation is derived showing the heat transfer coefficient indicated in Nusselt number as a function of Reynolds and Prandtl numbers with modified physical properties including the properties of both the liquid and the solid particles. The results of this study can be useful for the design and performance investigation of process vessels containing slurries

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APA: Copy

HAMIDI, ALI ASGHAR, & KHODAYARI, M.. (2002). DETERMINATION OF HEAT TRANSFER COEFFICIENT INSIDE STIRRED JACKETED VESSELS CONTAINING SUSPENSIONS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), 36(1 (75)), 107-113. SID. https://sid.ir/paper/14511/en

Vancouver: Copy

HAMIDI ALI ASGHAR, KHODAYARI M.. DETERMINATION OF HEAT TRANSFER COEFFICIENT INSIDE STIRRED JACKETED VESSELS CONTAINING SUSPENSIONS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)[Internet]. 2002;36(1 (75)):107-113. Available from: https://sid.ir/paper/14511/en

IEEE: Copy

ALI ASGHAR HAMIDI, and M. KHODAYARI, “DETERMINATION OF HEAT TRANSFER COEFFICIENT INSIDE STIRRED JACKETED VESSELS CONTAINING SUSPENSIONS,” JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), vol. 36, no. 1 (75), pp. 107–113, 2002, [Online]. Available: https://sid.ir/paper/14511/en

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