Irhamni, Firman (2025) Analisis Distribusi Temperatur Pada Nozzle Burner Berlapis Keramik Menggunakan Simulasi CFD. (Analysis Of Temperature Distribution on Ceramic Coated Burner Nozzles Using CFD Simulation). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.
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Abstract
This study examines the thermal behavior of a pulverized-coal burner nozzle operating under high-temperature conditions by analyzing the temperature distribution across the nozzle substrate and ceramic coating using Computational Fluid Dynamics (CFD) within ANSYS Fluent. Coal-fired power plants, particularly Pulverized Coal Combustion (PCC) systems, subject burner components to extreme thermal loads that may exceed 1200 °C, thereby accelerating material degradation, thermal fatigue, and structural failure. As a commonly used heat-resistant alloy, ASTM A297 provides moderate thermal stability but remains vulnerable to oxidation and severe thermal gradients during continuous operation, necessitating additional protection measures. To address this issue, zirconia-based ceramic coatings, particularly those with low thermal conductivity, have been widely adopted as Thermal Barrier Coatings (TBCs) due to their exceptional high temperature resistance and transformation-toughening characteristics. In this research, three coating configurations uncoated (0 mm), 1 mm zirconia coated, and 2 mm zirconia coated nozzles—were simulated through a steady-state Conjugate Heat Transfer (CHT) framework. The high-temperature gas flow entering the nozzle was treated as a single-phase ideal gas, with radiative heat transfer and turbulence effects incorporated to capture realistic industrial conditions. The geometric model of the nozzle burner was reconstructed based on field data from PLTU Paiton (PT POMI), while the material properties of ASTM A297 and zirconia coating were obtained from validated literature sources and manufacturer datasheets. The simulation results provide a comparative understanding of how coating thickness alters temperature distribution, thermal gradients, and heat flux on the nozzle wall. The findings emphasize the thermal insulation advantages of zirconia coatings and illustrate the diminishing substrate temperature as coating thickness increases, thereby offering insights into the optimal thermal protection strategy for extending nozzle longevity in coal combustion systems.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | nozzle burner, temperature distribution, CFD, Ceramic Coating, ANSYS Fluent |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin |
| Depositing User: | 1422100084 Firman Irhamni |
| Date Deposited: | 02 May 2002 21:19 |
| Last Modified: | 02 May 2002 21:19 |
| URI: | http://repository.untag-sby.ac.id/id/eprint/43513 |
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