All the people around the world know the importance to preserve the health of our planet more and more subjected to the devastating effects of the climate changes caused by the human behavior. Many of International Organizations have moved in order to reduce the environmental impact through packages of law or simply through the disclosure of good practices, addressed to citizens, associations and industries. For this reasons it appears really important for the industries, which represent one of the main responsible to the high consumption of the energy, to invest in research projects in order to develop a new managing systems for the rational use of the energy. The study reported in this paper is relative to the forging industry where the production processes generally start with the heating of the steel by means of furnaces and continue with other processes, such as heat treatments and mechanical machining. This sector is really fascinating due the dimensions and the machining done, however is characterized by an high quantity of energy used. The heating processes done inside furnaces, are obviously the most “energivorous”. These ones bring the steel at high temperature (more than 1000 °C) for the subsequent process of forging. Since the time to reach the working temperature inside furnace can get to some days and since the number of the components to process is high, those furnaces are always on at the maximum temperature. For this reason one of the most critical operations, in terms of the energy loss, is the opening of the furnaces door for the insertion and extraction operations. During this time the temperature of the furnaces can decrease of hundreds of degrees in a few minutes. Because those furnaces generally work with natural gas, the quantity of the heat lost needs to be supplied again by the combustion of the fuel increasing the consumption of the energy and the pollutant emissions. The purpose of this study is to provide a faithful estimation of the energy lost during the opening operation in order to develop a technical solution to limit the dispersion with consequent reduction of the fuel consumption. To analyze this problem it has used a CFD simulation software.
Thermal analysis of an industrial furnace
FILIPPONI, MIRKO;ROSSI, Federico;PRESCIUTTI, ANDREA;DE CIANTIS, STEFANIA;CASTELLANI, BEATRICE;
2016
Abstract
All the people around the world know the importance to preserve the health of our planet more and more subjected to the devastating effects of the climate changes caused by the human behavior. Many of International Organizations have moved in order to reduce the environmental impact through packages of law or simply through the disclosure of good practices, addressed to citizens, associations and industries. For this reasons it appears really important for the industries, which represent one of the main responsible to the high consumption of the energy, to invest in research projects in order to develop a new managing systems for the rational use of the energy. The study reported in this paper is relative to the forging industry where the production processes generally start with the heating of the steel by means of furnaces and continue with other processes, such as heat treatments and mechanical machining. This sector is really fascinating due the dimensions and the machining done, however is characterized by an high quantity of energy used. The heating processes done inside furnaces, are obviously the most “energivorous”. These ones bring the steel at high temperature (more than 1000 °C) for the subsequent process of forging. Since the time to reach the working temperature inside furnace can get to some days and since the number of the components to process is high, those furnaces are always on at the maximum temperature. For this reason one of the most critical operations, in terms of the energy loss, is the opening of the furnaces door for the insertion and extraction operations. During this time the temperature of the furnaces can decrease of hundreds of degrees in a few minutes. Because those furnaces generally work with natural gas, the quantity of the heat lost needs to be supplied again by the combustion of the fuel increasing the consumption of the energy and the pollutant emissions. The purpose of this study is to provide a faithful estimation of the energy lost during the opening operation in order to develop a technical solution to limit the dispersion with consequent reduction of the fuel consumption. To analyze this problem it has used a CFD simulation software.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
