Publicação
Integration of Renewable Energy for Carbon-Neutral Fish Cold Storage
| Resumo: | The preservation of perishable foods, particularly fish, relies on cold storage systems that maintain optimal temperature and humidity across the supply chain. Conventional facilities often face challenges due to high energy demand, operational costs, and carbon emissions. This study examines a cold storage solution in Tarrafal, Santiago, Cape Verde, utilizing renewable energy sources such as wind, solar, and tidal power. Four configurations are analyzed for energy efficiency, economic feasibility, and environmental impact. Solution A employs R134a refrigeration powered by the grid, while Solution B uses a transcritical CO2 system, also grid powered. Solution C integrates CO2 refrigeration with renewable energy, and Solution D enhances this with seawater heat exchange. Results show Solution D reduces carbon emissions by 90% (15,880 kg CO2eq annually) and achieves a return on investment within five years. Solution C, though costlier initially, also contributes to long-term sustainability, cutting emissions by over 600,000 kg CO2 compared to grid-powered systems. These findings highlight the potential of renewable energy integration in coastal cold storage, supporting sustainable energy use and environmental preservation. |
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| Autores principais: | Semedo, Arian |
| Outros Autores: | Garcia, João |
| Assunto: | Solar Energy Sustainable refrigeration Tidal Energy Wind Energy Civil and Structural Engineering General Materials Science Mechanics of Materials Mechanical Engineering SDG 7 - Affordable and Clean Energy |
| Ano: | 2026 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade Nova de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Institucional da UNL |
| Resumo: | The preservation of perishable foods, particularly fish, relies on cold storage systems that maintain optimal temperature and humidity across the supply chain. Conventional facilities often face challenges due to high energy demand, operational costs, and carbon emissions. This study examines a cold storage solution in Tarrafal, Santiago, Cape Verde, utilizing renewable energy sources such as wind, solar, and tidal power. Four configurations are analyzed for energy efficiency, economic feasibility, and environmental impact. Solution A employs R134a refrigeration powered by the grid, while Solution B uses a transcritical CO2 system, also grid powered. Solution C integrates CO2 refrigeration with renewable energy, and Solution D enhances this with seawater heat exchange. Results show Solution D reduces carbon emissions by 90% (15,880 kg CO2eq annually) and achieves a return on investment within five years. Solution C, though costlier initially, also contributes to long-term sustainability, cutting emissions by over 600,000 kg CO2 compared to grid-powered systems. These findings highlight the potential of renewable energy integration in coastal cold storage, supporting sustainable energy use and environmental preservation. |
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