| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 2.79 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
A elaboração deste trabalho baseia-se na crescente preocupação com o aumento desmedido
dos consumos de energia. Apresenta um estudo focado na implementação teórica de um sistema
de trigeração numa indústria vitivinícola que utiliza como fonte de energia resíduos
provenientes de podas de videiras. A unidade de trigeração deverá produzir frio suficiente para
a manutenção de temperatura num espaço de refrigeração, em funcionamento constante,
durante aproximadamente três meses, bem como de cubas com camisas de refrigeração. A
avaliação da utilização de frio na indústria vitivinícola é efetuada através da análise de cargas
térmicas associadas à refrigeração e conservação de uvas, mosto e vinho. Os valores das cargas
térmicas atingidos permitem calcular as cargas térmicas de arrefecimento associadas ao espaço
de refrigeração e às cubas cintadas. O estudo culmina na seleção de uma unidade de trigeração
capaz de colmatar as necessidades energéticas da exploração, composta por dois chillers de
absorção de efeito simples e num sistema de cogeração que combina um gaseificador e um
motor de combustão interna.
A análise efetuada neste trabalho permite concluir que os resíduos das podas de videiras
provenientes desta exploração representam o triplo do necessário para colmatar as cargas de
arrefecimento deste sistema, durante o período de tempo estipulado, incluindo uma margem
destinada a potenciais necessidades energéticas da exploração. Análises mais aprofundadas
incluíram a adição de um período de funcionamento extra de dois meses, a 64% da potência
originalmente estipulada. Mesmo contabilizando esse período de tempo, os resíduos disponíveis
no terreno representam o dobro do necessário.
This work is based on the growing concerns about the overwhelming energy consumption, showing a study focused on the theoretic implementation of a trigeneration system in a winemaking industry that uses the residues from pruning grapevines as the source of energy. The trigeneration unit must produce enough cold in order to maintain de temperature in the refrigeration space, which should be in constant function during approximately three months, as well as the tanks with cooling jackets. The evaluation of the winemaking industry’s usage of refrigeration is done through an analysis of the thermal loads concerning the conservation and refrigeration of grapes, grape must and wine. The values of the heat loads attained allow the calculation of the thermal cooling loads associated to the refrigeration unit, as well as the jacketed tanks. This study culminates in the selection of the trigeneration unit capable of tackling all the energy needs of the wine exploration, which is composed of two absorption chillers of single effect and a cogeneration system that combines a gasifier and an internal combustion engine. This work’s analysis concludes that the residues from pruning grapevines from the exploration represent three times the necessary quantity to address all the cooling loads of this system during the stipulated period, which includes a leeway to tackle the potential energetic necessities of the exploration. Further evaluations include an extra period of two months on 64% of the original stipulated power, and even considering this extra period the available residues in the field represent the double of what is required.
This work is based on the growing concerns about the overwhelming energy consumption, showing a study focused on the theoretic implementation of a trigeneration system in a winemaking industry that uses the residues from pruning grapevines as the source of energy. The trigeneration unit must produce enough cold in order to maintain de temperature in the refrigeration space, which should be in constant function during approximately three months, as well as the tanks with cooling jackets. The evaluation of the winemaking industry’s usage of refrigeration is done through an analysis of the thermal loads concerning the conservation and refrigeration of grapes, grape must and wine. The values of the heat loads attained allow the calculation of the thermal cooling loads associated to the refrigeration unit, as well as the jacketed tanks. This study culminates in the selection of the trigeneration unit capable of tackling all the energy needs of the wine exploration, which is composed of two absorption chillers of single effect and a cogeneration system that combines a gasifier and an internal combustion engine. This work’s analysis concludes that the residues from pruning grapevines from the exploration represent three times the necessary quantity to address all the cooling loads of this system during the stipulated period, which includes a leeway to tackle the potential energetic necessities of the exploration. Further evaluations include an extra period of two months on 64% of the original stipulated power, and even considering this extra period the available residues in the field represent the double of what is required.
Description
Keywords
Arrefecimento Biomassa Carga Térmica Chiller Cogeração Gaseificador Mosto Podas Trigeração Uvas Vinho Vitivinícola