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http://dx.doi.org/10.7316/KHNES.2015.26.6.581

Comparison of Viscosity Measurement of a Liquid Carbon Dioxide Used for a High-Pressure Coal Gasifier  

KIM, KANGWOOK (Grad. School of Pusan National Univ.)
KIM, CHANGYEON (Grad. School of Pusan National Univ.)
KIM, HAKDUCK (Grad. School of Pusan National Univ.)
SONG, JUHUN (School of Mechanical Engineering, Pusan National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.26, no.6, 2015 , pp. 581-589 More about this Journal
Abstract
In this study, the viscosity of a liquid carbon dioxide ($LCO_2$) that can potentially be used in a wet feed coal gasifier was evaluated. A pressurized capillary viscometer was employed to obtain the viscosity data of $LCO_2$ using two different methods. During the first method, the measurements were conducted under quasi-steady and high pressure flow conditions where two-phase flow was greatly minimized. The viscosity of $LCO_2$ was determined using turbulent friction relationship. At the second flow condition where unsteady flow is induced, the viscosity of $LCO_2$ was measured using the half-time pressure decay data and was further compared with values calculated by the first method.
Keywords
Coal gasifier; Liquid carbon dioxide (LCO2); Viscosity; Capillary viscometer; Half-time pressure decay; Turbulent friction relationship;
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Times Cited By KSCI : 1  (Citation Analysis)
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