Numerical and experimental investigation of flue gases heat recovery via condensing heat exchanger

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F18%3A10239229" target="_blank" >RIV/61989100:27230/18:10239229 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27360/18:10239229
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0017931017357113?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0017931017357113?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijheatmasstransfer.2018.04.051" target="_blank" >10.1016/j.ijheatmasstransfer.2018.04.051</a>

Result language
angličtina
Original language name
Numerical and experimental investigation of flue gases heat recovery via condensing heat exchanger
Original language description
The ever increasing environmental awareness introduces the trend of increasing the efficiency of power plants via implementing waste heat recovery. This study reports two numerical models suitable for analyses of a condensing heat exchanger. The numerically predicted results are compared with the results acquired experimentally with the use of a coal-fired water condensing heat exchanger installed in the local laboratory of thermal engineering. The first applied mathematical model is a stationary 1D model based on our own modification of the Colburn-Hougen model. The second one is a proposed 3D multi-phase flow model based on the Euler model of mixture expanded by the model of condensation of water vapour from the flue gases. A thorough comparative analysis of the results of both the numerical models and the experimental ones showed very good correlation. The differences between all the acquired results for the temperatures of flue gases and heated water at the outlet of the heat exchanger did not exceed 4 degrees C. In cases of heat recovery with the occurrence of condensation, the latent heat has a significant influence on the flue gases and water temperatures at heat exchanger outlet.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20303 - Thermodynamics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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