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Abstract(s)
Esta dissertação realizou-se na empresa Continental-Indústria Têxtil do Ave, S.A. e teve
como principal objetivo a melhoria do processo de secagem da tela, que ocorre na estufa 1 da
máquina de impregnação de tela, ZELL, e consequentemente a otimização do consumo de gás
natural nesta máquina.
Deste modo, foi feito um levantamento prévio das condições de operação da estufa,
como: temperatura de operação, percentagem de ventilação e de exaustão, para as telas com
mais representatividade na produção da empresa, dois artigos de Nylon e dois de Poliéster.
Com base nos valores obtidos , propôs-se a alteração da ventilação da estufa 1 com
intuito de uniformizar a temperatura no interior da estufa e assim promover um aumento da
taxa de secagem. Deste modo, seria possível diminuir a exaustão da estufa seguinte, com intuito
de diminuir o consumo de gás natural e contribuir para uma maior poupança energética.
As alterações efetuadas permitiram obter uma poupança anual de 4,2% para a artigo N1
e de 7,4 % para ao artigo N2. Relativamente aos artigos de poliéster, conseguiu-se obter uma
poupança de 12 % para o artigo P2.
Analisou-se também a possibilidade de um pré aquecimento da solução de impregnação
da tela usando os gases quentes de exaustão. Obteve-se uma poupança de gás natural de 2,5%.
A proposta de instalação de painéis radiantes no interior da estufa 1 para promover a
secagem da tela através de radiação foi apenas analisada numa perspetiva de alternativa
energética
This dissertation took place at Continental-Indústria Têxtil do Ave, S.A. and its main objective was to improve the fabric drying process, which takes place in drying oven nº1 of the fabric impregnation machine, ZELL, and consequently to optimize the consumption of natural gas in this machine. In this way, a preliminary survey of the operating conditions of the drying oven was carried out, such as: operating temperature, ventilation and exhaustion percentage, for the products with the most representativeness in the company's production, two articles of Nylon and two of Polyester. Based on the values obtained, it was proposed to change the ventilation of drying oven nº1 in order to standardize the temperature inside the drying oven and thus promote an increase in the drying rate. In this way, it would be possible to reduce the exhaustion of the next drying oven, in order to reduce the consumption of natural gas and contribute to greater energy savings. The changes made allowed for annual savings of 4.2% for article N1 and 7.4% for article N2. For polyester articles, a saving of 12% was achieved for article P2. The possibility of preheating the fabric impregnation solution using the hot exhaust gases was also analysed. A natural gas saving of 2.5% was obtained. The proposal to install radiant panels inside the greenhouse 1 to promote the drying of the screen through radiation was only analysed from an energy alternative perspective
This dissertation took place at Continental-Indústria Têxtil do Ave, S.A. and its main objective was to improve the fabric drying process, which takes place in drying oven nº1 of the fabric impregnation machine, ZELL, and consequently to optimize the consumption of natural gas in this machine. In this way, a preliminary survey of the operating conditions of the drying oven was carried out, such as: operating temperature, ventilation and exhaustion percentage, for the products with the most representativeness in the company's production, two articles of Nylon and two of Polyester. Based on the values obtained, it was proposed to change the ventilation of drying oven nº1 in order to standardize the temperature inside the drying oven and thus promote an increase in the drying rate. In this way, it would be possible to reduce the exhaustion of the next drying oven, in order to reduce the consumption of natural gas and contribute to greater energy savings. The changes made allowed for annual savings of 4.2% for article N1 and 7.4% for article N2. For polyester articles, a saving of 12% was achieved for article P2. The possibility of preheating the fabric impregnation solution using the hot exhaust gases was also analysed. A natural gas saving of 2.5% was obtained. The proposal to install radiant panels inside the greenhouse 1 to promote the drying of the screen through radiation was only analysed from an energy alternative perspective
Description
Keywords
Continental ITA Secagem Otimização Estufa