Autor: Gürel, Ö. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical Analysis of Pulverised Coal Fired Boiler with Different Burner Geometries
Autorzy:: Gurel, B.
Ipek, O.
Kan, M.
Powiązania:: https://bibliotekanauki.pl/articles/1402493.pdf
Data publikacji:: 2015-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 44.15.+a
Opis:: Pulverized coal combustion is extensively used in utility boilers, industrial boilers, furnaces, kilns, and other energy conversion appliances. The effective utilization of pulverized coal is the main problem in study of combustion processes, particularly in burning low-grade coal. It is well known that the emission of nitrogen oxides $(NO_{x})$ during coal combustion is a main environmental problem. In this study, three different pulverised coal burner geometries for a pulverised coal fired boiler have been studied by numerical analysis. GLI-Tunçbilek coal was used as fuel. Three-dimensional numerical analysis was carried out using Ansys Fluent code. Realizable K-ε turbulence method, single rate devolatilization method, multiple char combustion method and second-order upwind discretization method were used during calculations. Coal particle diameter and coal mass flow rate were assumed to be 70 μm and 378 kg/h respectively.
Źródło:: Acta Physica Polonica A; 2015, 128, 2B; B-43-B-45
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Plate Heat Exchangers as a Compact Design and Optimization of Different Channel Angles
Autorzy:: Kan, M.
Ipek, O.
Gurel, B.
Powiązania:: https://bibliotekanauki.pl/articles/1402529.pdf
Data publikacji:: 2015-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 44.15.+a
Opis:: In this study, thermal treatments have been investigated for different channel angles and mass flow rates of a compact heat exchanger have been manufactured by direct metal laser sintering technique instead of a sealed and brazed one used in many areas. Boundary conditions of available heat exchanger experimental test have been used in laboratory. In this study, we have designed for compact heat exchanger of 30°, 45° and 60° channel angle and used three different mass flow rates (0.2, 0.3, and 0.43 kg/s). Heat transfers occurring between heat channels and walls of heat exchangers for different channel angles and efficiency of heat exchangers have been calculated. As a result of the analysis, it has been determined that in order for maximum of heat transfer of a compact heat exchanger, following working conditions ought to be fulfilled: channel angle 30°, hot water input temperature 60°C, cold water input temperature 15°C, and mass flow rate 0.43 kg/s.
Źródło:: Acta Physica Polonica A; 2015, 128, 2B; B-49-B-52
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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