Determination of the surface heat-transfer coefficient in CE

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F09%3A10001088" target="_blank" >RIV/00216208:11310/09:10001088 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Determination of the surface heat-transfer coefficient in CE

Popis výsledku v původním jazyce

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. A novel method for h(s) determination in CE is introduced, which is based on curve-fitting of plots of conductance versus voltage to calculate several important parameters including Delta T-Mean, 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 <5 kV. Axially averaged values for h(s) were determined for three different commercial CE instruments ranging from 164 W m(-2) K-1 for a passively cooled instrument in a drafty environment to 460 W m(-2) K-1 for a liquid-cooled instru

Název v anglickém jazyce

Determination of the surface heat-transfer coefficient in CE

Popis výsledku anglicky

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. A novel method for h(s) determination in CE is introduced, which is based on curve-fitting of plots of conductance versus voltage to calculate several important parameters including Delta T-Mean, 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 <5 kV. Axially averaged values for h(s) were determined for three different commercial CE instruments ranging from 164 W m(-2) K-1 for a passively cooled instrument in a drafty environment to 460 W m(-2) K-1 for a liquid-cooled instru

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Electrophoresis

ISSN

0173-0835

e-ISSN

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Svazek periodika

30

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

000264471900021

EID výsledku v databázi Scopus

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