Zobrazit minimální záznam

dc.contributor.authorKocich, Radim
dc.contributor.authorBojko, Marian
dc.contributor.authorMacháčková, Adéla
dc.contributor.authorKlečková, Zuzana
dc.date.accessioned2012-10-30T09:23:54Z
dc.date.available2012-10-30T09:23:54Z
dc.date.issued2012
dc.identifier.citationInternational journal of heat and mass transfer. 2012, vol. 55, issues 19-20, p. 5336-5342.cs
dc.identifier.issn0017-9310
dc.identifier.urihttp://hdl.handle.net/10084/95130
dc.description.abstractThe application of numerical simulations using the computational fluid dynamics (CFD) analysis when mapping processes in the course of which the heat transmission occurs has become an essential part of the heat transfer systems. The present contribution deals with the possibility to use the waste heat of the flue gas produced by small microturbines. The waste heat is mapped by means of both the numerical simulations applying the FLUENT software and the practical experiment. Utilizing a part of the waste heat for water heating and decreasing the outlet temperature of the flue gas into atmosphere when applying in co-generating units represents one of the partial benefits. The present paper brings information concerning the newly designed type of heat exchanger including the results of its numerical analysis. The analysed heat exchanger designed in the system with microturbine (MT) C30 reached generally the efficiency of 75%. Both the results of simulations and the carried out practical experiment confirmed the temperature of the flue gas to be sufficient behind the exchanger to prevent the condensation of water from the flue gas. On the contrary, except for heating water the exchanger under consideration offers – thanks to its design – also other possibilities to use of the flue gas. The practical experiment confirmed the results of the CFD prediction with rather small differences as the temperature of water obtained from the exchanger was 359 K and the designed shape of the exchanger did not result in substantial pressure losses in flue gas approximately 50 Pa. The mean logarithmic temperature difference of the mapped and verified exchanger was ∼203 K.cs
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofseriesInternational journal of heat and mass transfercs
dc.relation.urihttp://dx.doi.org/10.1016/j.ijheatmasstransfer.2012.05.050cs
dc.subjectheat exchangercs
dc.subjectCFDcs
dc.subjectFlue gascs
dc.subjectMicroturbinecs
dc.titleNumerical analysis of the tubular heat exchanger designed for co-generating units on the basis of microturbinescs
dc.typearticlecs
dc.identifier.locationNení ve fondu ÚKcs
dc.identifier.doi10.1016/j.ijheatmasstransfer.2012.05.050
dc.type.statusPeer-reviewedcs
dc.description.sourceWeb of Sciencecs
dc.description.volume55cs
dc.description.issue19-20cs
dc.description.lastpage5342cs
dc.description.firstpage5336cs
dc.identifier.wos000306774400041


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