TY - JOUR
T1 - Determination of the surface heat-transfer coefficient in CE
AU - Hruska, Vlastimil
AU - Evenhuis, Christopher
AU - Guijt, Rosanne
AU - Macka, Miroslav
AU - Gas, Bohuslav
AU - Marriott, Philip
AU - Haddad, Paul
PY - 2009
Y1 - 2009
N2 - A knowledge of the heat-transfer coefficient, h(s), for the external surface of the capillary or the overall heat coefficient, hop, is of great value in predicting the mean increase in temperature of the electrolyte, Delta T(Mean), during electrokinetic separations. For CE, traditional indirect methods of determining h(s) were time-consuming and tended to overestimate cooling efficiency; a novel method is introduced, which is based on curve-fitting of plots of conductance versus voltage to calculate several important parameters including Delta T(Mean), h8, the conductance free of joule heating effects (G(0)) and the voltage that causes autothermal runaway, V(lim). The new method is superior to previously published methods in that it can be performed more quickly and that it corrects for systematic errors in the measurement of electric current for voltages
AB - A knowledge of the heat-transfer coefficient, h(s), for the external surface of the capillary or the overall heat coefficient, hop, is of great value in predicting the mean increase in temperature of the electrolyte, Delta T(Mean), during electrokinetic separations. For CE, traditional indirect methods of determining h(s) were time-consuming and tended to overestimate cooling efficiency; a novel method is introduced, which is based on curve-fitting of plots of conductance versus voltage to calculate several important parameters including Delta T(Mean), h8, the conductance free of joule heating effects (G(0)) and the voltage that causes autothermal runaway, V(lim). The new method is superior to previously published methods in that it can be performed more quickly and that it corrects for systematic errors in the measurement of electric current for voltages
UR - http://onlinelibrary.wiley.com.ezproxy.lib.monash.edu.au/doi/10.1002/elps.200800647/pdf
U2 - 10.1002/elps.200800647
DO - 10.1002/elps.200800647
M3 - Article
VL - 30
SP - 910
EP - 920
JO - Electrophoresis
JF - Electrophoresis
SN - 0173-0835
IS - 5
ER -