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Authors
Abstract(s)
Devido aos elevados custos energéticos que o setor cerâmico apresenta torna-se essencial
a gestão e otimização energética.
O presente trabalho foi realizado na empresa ARCH, SA, Valadares com o objetivo de
avaliar a forma como os recursos energéticos são geridos na secção da olaria 2.
Inicialmente realizou-se um levantamento energético à empresa e à olaria, contastando-se que a utilidade mais consumida, quer na empresa quer na olaria é o gás natural,
representando na empresa 86 % do consumo total energético. Na olaria em estudo o
consumo de gás natural é de 84 % correspondendo o resto à energia elétrica.
Assim, foram estudadas e avaliadas algumas medidas de otimização energética.
Verificando-se que as perdas térmicas na olaria são essencialmente pelas fronteiras
exteriores sugeriu-se a melhoria do isolamento térmico destas fronteiras. Foi avaliada a
viabilidade económica do isolamento com placas de esferovite de 5 cm, tendo-se obtido
uma poupança de gás natural de 16 % na olaria 2.1 e 15 % na olaria 2.2. e um tempo de
retorno do investimento de 2 anos e 5 meses.
Foi ainda estudada a possibilidade de transitar de gás natural para energia elétrica para a
realização do aquecimento das olarias. Para este cenário, iria ocorrer uma poupança anual
de cerca de 18 161 €, mostrando-se como opção bastante viável.
Uma vez que, é cada vez mais importante a utilização de energia renovável foi analisada
a viabilidade de incorporar painéis fotovoltaicos da marca LONGi Hi-M04, já instalados
na empresa, para o tal aquecimento, total ou parcial, das olarias. Para isto recorreu-se ao
software “Sistema de Certificação Energética – Energias Renováveis”, SCE.ER,
disponibilizado pela Direção Geral de Energia e Geologia, DGEG. Após a devida
parametrização do sistema obtiveram-se resultados pouco satisfatórios. Obteve-se uma
percentagem de necessidades cobertas de 34 % utilizando 400 paineis solares
fotovoltaicos, assegurando assim uma poupança de 7 587 € anuais.
Due to the high energy costs that the ceramic sector presents, energy management and optimization becomes essential. The present work was carried out in the company ARCH, SA, Valadares with the objective of evaluating how energy resources are managed in the pottery section 2. Initially, an energy survey was carried out in the company and in the pottery, showing that the most consumed utility, both in the company and in the pottery is natural gas, representing 86% of the total energy consumption in the company. In the pottery under study, the consumption of natural gas is 84%, the rest corresponding to electricity. Thus, some energy optimization measures were studied and evaluated. Since the thermal losses in the pottery are essentially through the external borders, it was suggested to improve the thermal insulation of these borders. The economic viability of insulation with 5 cm styrofoam sheets was evaluated, obtaining a natural gas saving of 16% in pottery 2.1 and 15% in pottery 2.2. and a return on investment time of 2 years and 5 months. The possibility of switching from natural gas to electricity for the heating of the potteries was also studied. For this scenario, there would be an annual saving of about 18 161 €, proving to be a very viable option. Since the use of renewable energy is increasingly important, the feasibility of incorporating photovoltaic panels of the LONGi Hi-M04 brand, already installed in the company, for such heating, total or partial, of the potteries was analyzed. For this, the software "Energy Certification System - Renewable Energies", SCE.ER, made available by the General Directorate of Energy and Geology, DGEG, was used. After the proper parameterization of the system, unsatisfactory results were obtained. A percentage of covered needs of 34% was obtained using 400 photovoltaic solar panels, thus ensuring savings of € 7,587 per year.
Due to the high energy costs that the ceramic sector presents, energy management and optimization becomes essential. The present work was carried out in the company ARCH, SA, Valadares with the objective of evaluating how energy resources are managed in the pottery section 2. Initially, an energy survey was carried out in the company and in the pottery, showing that the most consumed utility, both in the company and in the pottery is natural gas, representing 86% of the total energy consumption in the company. In the pottery under study, the consumption of natural gas is 84%, the rest corresponding to electricity. Thus, some energy optimization measures were studied and evaluated. Since the thermal losses in the pottery are essentially through the external borders, it was suggested to improve the thermal insulation of these borders. The economic viability of insulation with 5 cm styrofoam sheets was evaluated, obtaining a natural gas saving of 16% in pottery 2.1 and 15% in pottery 2.2. and a return on investment time of 2 years and 5 months. The possibility of switching from natural gas to electricity for the heating of the potteries was also studied. For this scenario, there would be an annual saving of about 18 161 €, proving to be a very viable option. Since the use of renewable energy is increasingly important, the feasibility of incorporating photovoltaic panels of the LONGi Hi-M04 brand, already installed in the company, for such heating, total or partial, of the potteries was analyzed. For this, the software "Energy Certification System - Renewable Energies", SCE.ER, made available by the General Directorate of Energy and Geology, DGEG, was used. After the proper parameterization of the system, unsatisfactory results were obtained. A percentage of covered needs of 34% was obtained using 400 photovoltaic solar panels, thus ensuring savings of € 7,587 per year.
Description
Keywords
Energy Optimization Renewable Energy Electrical Energy Photovoltaic System