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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
REHEATING FURNACES IN THE STEEL INDUSTRY: REDUCTION OF HEAT TRANSFER LOSSES BY ANALYZING THE TYPES OF INSULATION MATERIALS AND THICKNESS IN EACH LAYER
Submission Author:
Diego Jhovanny Mariños Rosado , SP
Co-Authors:
Diego Jhovanny Mariños Rosado, Samir Boset Rojas Chávez, Jordan Gutierrez, João Carvalho, Miguel Huaraz Rodriguez, Andrés Armando Mendiburu Zevallos
Presenter: Diego Jhovanny Mariños Rosado
doi://10.26678/ABCM.ENCIT2020.CIT20-0015
Abstract
The purpose of applying heat transfer in the reheating furnace was to quantify the heat lost through the roof, walls and floor of the furnace, as well as to quantify the temperatures in each layer. To evaluate the heat rate, coatings of different materials with a thickness in each layer and different configurations between them were used. In the case of the roof it was evaluated with 3 types of materials, in the case of the walls and floor 18 and 5 configurations were made, respectively. It is evident that the losses due to the heat transfer in the furnace were reduced below 2%, analyzing the setting that presented the lowest heat rate. On the roof, the temperature in the last layer was 72.9 °C; on the wall, the temperature in the outer layer was 88.2 °C; and on the floor, the temperature in the outer layer was 73.6 °C. Finally, the heat rate obtained in the roof, wall and floor of the furnace was 952.11 W/m2, 813.45 W/m2, and 606.80 W/m2, respectively.
Keywords
Heat rate, Heat ransfer losses, Insulation materials, Reheating furnaces, steel industry
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