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Statements

Subject Item
n2:RIV%2F68407700%3A21220%2F04%3A02100492%21RIV%2F2005%2FGA0%2F212205%2FN
rdf:type
skos:Concept n17:Vysledek
dcterms:description
Není k dispozici The effect of flow asymmetry was observed experimentally in vertical parallel channels of a continuous direct ohmic heater. While downward oriented flow is evenly distributed at isothermal conditions, flow-rate in parallel channels differs in the case of heating due to the buoyancy effects. Three different configurations of parallel flow (with and without internal heating in channels) are analysed, giving critical values of Gr/Re or Ri=Gr/Re2 ensuring stable and even distribution of flow into parallel channels of vertically oriented heat exchangers or heaters. Experimental verification was based upon a) flow visualisation (injection of a coloured tracer and monitoring the tracer by a camera), b) measurement of temperature profiles, and on c) stimulus response experiments using KCl as a tracer for conductivity methods (2 Pt conductivity probes) and Tc99 as a radioisotope tracer (collimated scintillation detectors). The effect of flow asymmetry was observed experimentally in vertical parallel channels of a continuous direct ohmic heater. While downward oriented flow is evenly distributed at isothermal conditions, flow-rate in parallel channels differs in the case of heating due to the buoyancy effects. Three different configurations of parallel flow (with and without internal heating in channels) are analysed, giving critical values of Gr/Re or Ri=Gr/Re2 ensuring stable and even distribution of flow into parallel channels of vertically oriented heat exchangers or heaters. Experimental verification was based upon a) flow visualisation (injection of a coloured tracer and monitoring the tracer by a camera), b) measurement of temperature profiles, and on c) stimulus response experiments using KCl as a tracer for conductivity methods (2 Pt conductivity probes) and Tc99 as a radioisotope tracer (collimated scintillation detectors).
dcterms:title
Parallel Flow Asymmetries in Heat Exchangers Parallel Flow Asymmetries in Heat Exchangers Není k dispozici
skos:prefLabel
Parallel Flow Asymmetries in Heat Exchangers Parallel Flow Asymmetries in Heat Exchangers Není k dispozici
skos:notation
RIV/68407700:21220/04:02100492!RIV/2005/GA0/212205/N
n3:strany
39 ; 49
n3:aktivita
n12:P n12:Z
n3:aktivity
P(GA101/02/0649), Z(MSM 212200008)
n3:cisloPeriodika
5
n3:dodaniDat
n9:2005
n3:domaciTvurceVysledku
n10:1885812 n10:5888204 n10:1291270
n3:druhVysledku
n6:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n4:predkladatel
n3:idSjednocenehoVysledku
578828
n3:idVysledku
RIV/68407700:21220/04:02100492
n3:jazykVysledku
n7:eng
n3:klicovaSlova
Heat Exchanger; asymmetries; parallel flow
n3:klicoveSlovo
n14:asymmetries n14:parallel%20flow n14:Heat%20Exchanger
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[216442FD0921]
n3:nazevZdroje
Heat Transfer Engineering
n3:obor
n15:JP
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n11:GA101%2F02%2F0649
n3:rokUplatneniVysledku
n9:2004
n3:svazekPeriodika
25
n3:tvurceVysledku
Houdek, Pavel Žitný, Rudolf Thýn, Jiří
n3:zamer
n19:MSM%20212200008
s:issn
0145-7632
s:numberOfPages
11
n18:organizacniJednotka
21220