Numerical analysis of the tubular heat exchanger designed for co-generating units on the basis of microturbines

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Show simple item record Kocich, Radim Bojko, Marian Macháčková, Adéla Klečková, Zuzana 2012-10-30T09:23:54Z 2012-10-30T09:23:54Z 2012
dc.identifier.citation International journal of heat and mass transfer. 2012, vol. 55, issues 19-20, p. 5336-5342. cs
dc.identifier.issn 0017-9310
dc.description.abstract The 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.iso en cs
dc.publisher Elsevier cs
dc.relation.ispartofseries International journal of heat and mass transfer cs
dc.relation.uri cs
dc.subject heat exchanger cs
dc.subject CFD cs
dc.subject Flue gas cs
dc.subject Microturbine cs
dc.title Numerical analysis of the tubular heat exchanger designed for co-generating units on the basis of microturbines cs
dc.type article cs
dc.identifier.location Není ve fondu ÚK cs
dc.identifier.doi 10.1016/j.ijheatmasstransfer.2012.05.050
dc.type.status Peer-reviewed cs
dc.description.source Web of Science cs
dc.description.volume 55 cs
dc.description.issue 19-20 cs
dc.description.lastpage 5342 cs
dc.description.firstpage 5336 cs
dc.identifier.wos 000306774400041

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