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dc.contributor.author Skosana, PJ
dc.contributor.author Van Vuuren, DS
dc.contributor.author Heydenrych, MD
dc.date.accessioned 2015-08-19T11:12:38Z
dc.date.available 2015-08-19T11:12:38Z
dc.date.issued 2014-10
dc.identifier.citation Skosana, P.J, Van Vuuren, D.S and Heydenrych, M.D. 2014. Wall heat transfer coefficient in a molten salt bubble column: testing the experimental setup. In: AMI Light Metals Conference 2014, Pilanesberg National Park, South Africa, 15-17 October 2014 en_US
dc.identifier.isbn 978-3-03835-234-1
dc.identifier.uri http://www.scientific.net/AMR.1019.195
dc.identifier.uri http://hdl.handle.net/10204/8095
dc.description AMI Light Metals Conference 2014, Pilanesberg National Park, South Africa, 15-17 October 2014. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. en_US
dc.description.abstract One of the advantages of bubble columns is high heat transfer rates. High heat transfer is important in reactors when high thermal duties are required. An appropriate measurement of heat transfer coefficient is of primary importance for designing reactors that are highly exothermic or endothermic. This paper presents the design and operation of experimental setup used for measurement of the heat transfer coefficient in molten salt media. The experimental setup was operated with tap water, heat transfer oil 32, LiCl–KCl eutectic and argon gas. Tap water was operated at the temperature of 40(supo)C and heat transfer oil was operated at the temperature of 75(supo)C, 103oC and 170(supo)C. There were some challenges when operating the bubble column with molten salt due to leakages on the welds and aggressive corrosion on the column. All the experiments were run at superficial gas velocities of 0.01–0.05 m/s. Three heating tapes, each connected to a corresponding variable AC voltage controller, were used to heat the column media. Heat transfer coefficients were measured by inducing a known heat flux through the column wall and measurement of the temperature difference between the wall and the contents. In order to balance the system, heat was removed by the cooling water flowing through a copper tube on the inside of the column. Temperature differences between the column wall and the liquid were measured at five axial locations. It was found that the heat transfer coefficient increases with superficial gas velocity. The values of heat transfer coefficient for argon–water system were higher than those of argon–heat transfer oil system. Heat transfer coefficient was also found to increase with an increase in temperature. en_US
dc.language.iso en en_US
dc.publisher Trans Tech Publications en_US
dc.relation.ispartofseries Workflow;13800
dc.subject Bubble columns en_US
dc.subject High heat transfer en_US
dc.subject Molten salt media en_US
dc.subject Heat transfer rates en_US
dc.subject LiCl–KCl eutectic en_US
dc.subject Argon gas en_US
dc.subject Heat transfer oil en_US
dc.subject Superficial gas velocity en_US
dc.title Wall heat transfer coefficient in a molten salt bubble column: testing the experimental setup en_US
dc.type Presentation en_US


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