Influence of Flue Gas Pattern Flow in Boiler Radiant Section on Heat Transfer
| Autor: | Branislav Jaćimović, Nikola Jaćimović, Srbislav Genić |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Fluid Flow and Transfer Processes
Flue gas Materials science 020209 energy Nuclear engineering Flow (psychology) General Engineering 02 engineering and technology Condensed Matter Physics Boiler (water heating) 020401 chemical engineering Section (archaeology) Heat transfer 0202 electrical engineering electronic engineering information engineering General Materials Science 0204 chemical engineering |
| Zdroj: | Journal of Thermal Science and Engineering Applications. 14 |
| ISSN: | 1948-5093 1948-5085 |
| DOI: | 10.1115/1.4051369 |
| Popis: | During the sizing of the radiant zone in boilers and furnaces, the most often used method is the Lobo-Evans model. This method is based on the perfect mixing model for flue gas flow inside the fire box, which represents a conservative or pessimistic flow pattern. This paper presents a different, optimistic model which is based on the plug flow for flue gas flow which results in the largest possible heat duty. The proposed model is given in two distinct forms—integral and numerical. As shown in the paper, the integral model results in small deviations with respect to the numerical model and, as such, is well suited for the engineering practice. Paper also presents an engineering approach to the calculation of the conductive heat transfer through the membrane wall, which is shown to be sufficiently accurate and simple for engineering calculations. |
| Databáze: | OpenAIRE |
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