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Statements

Subject Item
n2:RIV%2F68407700%3A21220%2F14%3A00222237%21RIV15-GA0-21220___
rdf:type
skos:Concept n14:Vysledek
dcterms:description
Results of heat transfer coefficient measurements in an agitated vessel heated or cooled by the liquid media flowing in a helical pipe coil are presented in this paper. The multistage impeller made of two pitched six-blade impellers and adjustable clearance was used in a vessel with conical bottom. The transient method based on measuring the temperature dependency on time and solving the unsteady enthalpy balance was used to determine the heat transfer coefficients between the agitated liquid and the helical pipe coil. The results are summarized by the Nusselt number correlations, which describe the dependency on the impeller Reynolds number. The second part of this paper introduces a theoretical analysis of the flow in the liquid batch near the helical pipe coil. Based on the known pumping capacity of the multistage impeller, the characteristic velocity near the helical pipe coil can be evaluated. This characteristic velocity can be then used to determine the Nusselt number describing the heat transfer in a flow around a cylinder with the same cross-section profile as the helical pipe coil. A clear correlation between this Nusselt number and the integral Nusselt number is presented in this paper and introduces an alternative approach for prediction of heat transfer characteristics on the basis of hydrodynamic parameters describing an agitated system. Results of heat transfer coefficient measurements in an agitated vessel heated or cooled by the liquid media flowing in a helical pipe coil are presented in this paper. The multistage impeller made of two pitched six-blade impellers and adjustable clearance was used in a vessel with conical bottom. The transient method based on measuring the temperature dependency on time and solving the unsteady enthalpy balance was used to determine the heat transfer coefficients between the agitated liquid and the helical pipe coil. The results are summarized by the Nusselt number correlations, which describe the dependency on the impeller Reynolds number. The second part of this paper introduces a theoretical analysis of the flow in the liquid batch near the helical pipe coil. Based on the known pumping capacity of the multistage impeller, the characteristic velocity near the helical pipe coil can be evaluated. This characteristic velocity can be then used to determine the Nusselt number describing the heat transfer in a flow around a cylinder with the same cross-section profile as the helical pipe coil. A clear correlation between this Nusselt number and the integral Nusselt number is presented in this paper and introduces an alternative approach for prediction of heat transfer characteristics on the basis of hydrodynamic parameters describing an agitated system.
dcterms:title
Analysis of heat transfer in a vessel with helical pipe coil and multistage impeller Analysis of heat transfer in a vessel with helical pipe coil and multistage impeller
skos:prefLabel
Analysis of heat transfer in a vessel with helical pipe coil and multistage impeller Analysis of heat transfer in a vessel with helical pipe coil and multistage impeller
skos:notation
RIV/68407700:21220/14:00222237!RIV15-GA0-21220___
n3:aktivita
n16:P
n3:aktivity
P(GA14-18955S)
n3:cisloPeriodika
12
n3:dodaniDat
n15:2015
n3:domaciTvurceVysledku
n9:5426758 n9:9635440 n9:7192029 n9:9259813 n9:7956312
n3:druhVysledku
n13:J
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
2685
n3:idVysledku
RIV/68407700:21220/14:00222237
n3:jazykVysledku
n10:eng
n3:klicovaSlova
heat transfer; agitated vessel; multistage impeller; helical pipe coil
n3:klicoveSlovo
n6:multistage%20impeller n6:helical%20pipe%20coil n6:heat%20transfer n6:agitated%20vessel
n3:kodStatuVydavatele
CA - Kanada
n3:kontrolniKodProRIV
[74B558B745AC]
n3:nazevZdroje
Canadian Journal of Chemical Engineering
n3:obor
n18:JP
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
5
n3:projekt
n7:GA14-18955S
n3:rokUplatneniVysledku
n15:2014
n3:svazekPeriodika
92
n3:tvurceVysledku
Fořt, Ivan Jirout, Tomáš Petera, Karel Věříšová, Marcela Dostál, Martin
n3:wos
000345295000012
s:issn
0008-4034
s:numberOfPages
7
n17:doi
10.1002/cjce.22033
n19:organizacniJednotka
21220