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Abstract(s)
Hoje em dia, verifica-se uma crescente preocupação com as questões ambientais e com a procura de tecnologias mais limpas e sustentáveis. Neste sentido, torna-se necessário a avaliação de processos produtivos e a racionalização do consumo energético.
Neste estudo realiza-se uma análise energética de ciclo de vida (AECV) por meio de indicadores de eficiência energética, direcionada para a caraterização e renovabilidade do ciclo de vida do sistema produtivo do pêssego da Beira Interior. A análise desenvolvida visa ainda encontrar oportunidades de melhoria a implementar. Neste sentido, pretende investigar as entradas de energia não renováveis provenientes de combustíveis fósseis, através da avaliação do consumo energético de cada operação no ciclo produtivo do pêssego, tal como as emissões resultantes da queima de combustíveis pela maquinaria. Adicionalmente, foram analisadas as entradas de energia elétrica no armazém, fundamentalmente requeridas pelo sistema de refrigeração das câmaras onde os frutos são conservados. Na perspetiva de encontrar oportunidades de melhoria a implementar, foram constituídos cenários alternativos para a comparação de diferentes resultados e análise crítica dos mesmos.
Os resultados revelaram que o enrelvamento é a operação com maior impacto energético no processo produtivo, seguindo-se a poda, a colheita, a aplicação de tratamentos fitossanitários e a aplicação de herbicidas. No período pós colheita, o maior impacto energético foi registado no armazém devido à necessidade de refrigeração dos frutos para a sua conservação, seguindo-se o transporte. De realçar que o armazém obteve maior impacto em todo a AECV na produção de pêssego na Quinta dos Lamaçais. Relativamente às emissões resultantes da queima de combustíveis, o maior impacto deve-se à maquinaria no pomar e ao transporte desde o armazém até ao retalhista, enquanto que o transporte entre o pomar e o armazém apresentou emissões pouco significativas.
Esta análise fornece uma perspetiva detalhada dos consumos de energia no processo produtivo e pós-colheita do pêssego da Beira Interior. A construção de cenários alternativos visa possibilitar a análise de condições que configuram a racionalização do consumo energético, quer pelo aumento da eficiência energética, quer pela alteração de métodos e procedimentos nos processos, assim como pela redução do impacto ambiental.
There is a growing concern about environmental issues and with the search of cleaner and sustainable technologies. In this sense, the evaluation of productive processes and the rationalization of energy consumption becomes necessary. In this study an energetic life-cycle analysis (ELCA) takes place through energy efficiency indicators, directed towards the life-cycle characterization and renewability of the production system of Beira Interior’s peach. The analysis aims to find improvement opportunities to implement. Thus, this study investigates the non-renewable energy inputs from fossil fuels, through the energy consumption evaluation of each operation in the peach production cycle, as well as the resulting emissions of burning fuels by machinery. Additionally, power inputs in the warehouse were analysed, fundamentally the required by the cooling system of the chambers where the fruits are preserved. There were established alternative scenarios for the comparison of different results and a critical analysis in the prospect of finding better opportunities to implement was enhanced. The results showed that the green cover is the operation with higher energy impact in the production process, followed by pruning, harvesting, applying phytosanitary treatments and the application of herbicides. In the postharvest period, the largest energy impact was recorded in the warehouse due to the need to refrigerate fruits for their conservation, followed by transport. It must be emphasized that the store got the biggest impact throughout the ELCA in the peach production in Quinta dos Lamaçais. Regarding the emissions from fuel combustion, the greatest impact is due to the machinery in the orchard and the transport from the warehouse to the retailer, while transport between the orchard and the warehouse showed little significant emissions. This analysis provides a detailed overview of the energy consumption in the production process and postharvest of Beira Interior peach. The construction of alternative scenarios aims to enable the analysis of conditions that may promote the rationalization of energy consumption, either by increasing energy efficiency, or changing the methods and procedures in the productive process, and by simultaneously reducing the environmental impact.
There is a growing concern about environmental issues and with the search of cleaner and sustainable technologies. In this sense, the evaluation of productive processes and the rationalization of energy consumption becomes necessary. In this study an energetic life-cycle analysis (ELCA) takes place through energy efficiency indicators, directed towards the life-cycle characterization and renewability of the production system of Beira Interior’s peach. The analysis aims to find improvement opportunities to implement. Thus, this study investigates the non-renewable energy inputs from fossil fuels, through the energy consumption evaluation of each operation in the peach production cycle, as well as the resulting emissions of burning fuels by machinery. Additionally, power inputs in the warehouse were analysed, fundamentally the required by the cooling system of the chambers where the fruits are preserved. There were established alternative scenarios for the comparison of different results and a critical analysis in the prospect of finding better opportunities to implement was enhanced. The results showed that the green cover is the operation with higher energy impact in the production process, followed by pruning, harvesting, applying phytosanitary treatments and the application of herbicides. In the postharvest period, the largest energy impact was recorded in the warehouse due to the need to refrigerate fruits for their conservation, followed by transport. It must be emphasized that the store got the biggest impact throughout the ELCA in the peach production in Quinta dos Lamaçais. Regarding the emissions from fuel combustion, the greatest impact is due to the machinery in the orchard and the transport from the warehouse to the retailer, while transport between the orchard and the warehouse showed little significant emissions. This analysis provides a detailed overview of the energy consumption in the production process and postharvest of Beira Interior peach. The construction of alternative scenarios aims to enable the analysis of conditions that may promote the rationalization of energy consumption, either by increasing energy efficiency, or changing the methods and procedures in the productive process, and by simultaneously reducing the environmental impact.
Description
Keywords
Análise do Ciclo de Vida Beira Interior Emissões Energia Pêssego