Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Thermal Radiation Shielding Applied to Polymeric Repair
Submission Author:
Robson Silva , RJ
Co-Authors:
Robson Silva, Fabio Toshio Kanizawa
Presenter: Robson Silva
doi://10.26678/ABCM.COBEM2021.COB2021-0269
Abstract
This study aims to experimentally investigate thermal radiation shielding systems focused on applications for polymeric matrix repairs of flare towers. The use of this type of repair in flare tower structure has restrictions due to the radiation emitted by the flame, which heats the repair above the material limiting operational temperature. The specimen evaluated consists of a cylindrical segment similar to the structural component of the flare towers. The specimen is positioned inside a chamber with a uniform and upward air flow at controlled low velocity to simulate the condition of natural convection. The chamber's walls inner surface are covered with a paint of high absorptivity to mitigate eventual effects of radiation reflection, and the temperature is controlled by a serpentine circuit fixed on its outer surface, to reduce eventual superheating and contribution on the radiation on the specimen. Thermal shields made with steel sheets and paintings will be analyzed. It is intended to evaluate specimens with diameters of 0.15 and 0.2 m (6 and 8 inches), with heat flux between 5 and 10 kW/m² at specimen. The main objective of the experiment is evaluating distinct geometrical configuration of the shielding for wide range of heat flux values. Additionally, it is expected to evaluate the temperature reduction of the repair due to the use of the shielding for distinct inclinations in relation to the heat source. These results will be presented in the full paper.
Keywords
radiation, shielding, flare, Polymeric, repair
