Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions
Large amounts of crop residue are produced annually in areas such as Almeria (Spain). These residues have elevated moisture and ash contents, and are also very heterogeneous, which hinders their reutilization. With the aim of facilitating biomass utilization in energy recovery-related processes, a m...
| Main Authors: | , , , |
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| Formato: | info:eu-repo/semantics/article |
| Idioma: | English |
| Publicado em: |
MDPI
2021
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| Assuntos: | |
| Acesso em linha: | http://hdl.handle.net/10835/9282 |
| _version_ | 1789406693364334592 |
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| author | Pinna Hernández, María Guadalupe Acién Fernández, Francisco Gabriel López Segura, José Gabriel Casas López, José Luis |
| author_facet | Pinna Hernández, María Guadalupe Acién Fernández, Francisco Gabriel López Segura, José Gabriel Casas López, José Luis |
| author_sort | Pinna Hernández, María Guadalupe |
| collection | DSpace |
| description | Large amounts of crop residue are produced annually in areas such as Almeria (Spain). These residues have elevated moisture and ash contents, and are also very heterogeneous, which hinders their reutilization. With the aim of facilitating biomass utilization in energy recovery-related processes, a model for solar drying was developed. Experiments were performed inside a greenhouse with tomato and pepper residues, following two strategies (hung or stacked residues). The influence of temperature and relative humidity on the residues’ equilibrium moisture was also studied. The results were that a model allowed for determination of the equilibrium moisture as a function of ambient conditions (temperature and relative humidity), with the model’s characteristic parameters being different for each crop residue. Regarding the drying process, the results conform to first-order kinetics, with the values of the kinetic constants varying as a function of the crop residues and their arrangement. The variation in equilibrium moisture as a function of the annual variation in ambient conditions (temperature and relative humidity) in Almería means that it would only be possible to dry crop residues inside greenhouse below a moisture level of 0.43 kgwater/kgdrysolids (30% water content) from April to November. |
| format | info:eu-repo/semantics/article |
| id | oai:repositorio.ual.es:10835-9282 |
| institution | Universidad de Cuenca |
| language | English |
| publishDate | 2021 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oai:repositorio.ual.es:10835-92822023-04-12T19:35:40Z Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions Pinna Hernández, María Guadalupe Acién Fernández, Francisco Gabriel López Segura, José Gabriel Casas López, José Luis solar drying kinetics greenhouse crop residue energy recovery pre-treatment natural drying energy sustainability Large amounts of crop residue are produced annually in areas such as Almeria (Spain). These residues have elevated moisture and ash contents, and are also very heterogeneous, which hinders their reutilization. With the aim of facilitating biomass utilization in energy recovery-related processes, a model for solar drying was developed. Experiments were performed inside a greenhouse with tomato and pepper residues, following two strategies (hung or stacked residues). The influence of temperature and relative humidity on the residues’ equilibrium moisture was also studied. The results were that a model allowed for determination of the equilibrium moisture as a function of ambient conditions (temperature and relative humidity), with the model’s characteristic parameters being different for each crop residue. Regarding the drying process, the results conform to first-order kinetics, with the values of the kinetic constants varying as a function of the crop residues and their arrangement. The variation in equilibrium moisture as a function of the annual variation in ambient conditions (temperature and relative humidity) in Almería means that it would only be possible to dry crop residues inside greenhouse below a moisture level of 0.43 kgwater/kgdrysolids (30% water content) from April to November. 2021-01-11T11:39:50Z 2021-01-11T11:39:50Z 2020-12-19 info:eu-repo/semantics/article 2073-4395 http://hdl.handle.net/10835/9282 en https://www.mdpi.com/2073-4395/10/12/2001 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess MDPI |
| spellingShingle | solar drying kinetics greenhouse crop residue energy recovery pre-treatment natural drying energy sustainability Pinna Hernández, María Guadalupe Acién Fernández, Francisco Gabriel López Segura, José Gabriel Casas López, José Luis Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions |
| title | Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions |
| title_full | Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions |
| title_fullStr | Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions |
| title_full_unstemmed | Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions |
| title_short | Solar Drying of Greenhouse Crop Residues for Energy Valorization: Modeling and Determination of Optimal Conditions |
| title_sort | solar drying of greenhouse crop residues for energy valorization: modeling and determination of optimal conditions |
| topic | solar drying kinetics greenhouse crop residue energy recovery pre-treatment natural drying energy sustainability |
| url | http://hdl.handle.net/10835/9282 |
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