Energy and exergy analysis of an absorption and mechanical system for a dehumidification unit in a gelatin factory

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dc.contributor.authorLIMA, L. S.
dc.contributor.authorCarlos Mady
dc.contributor.authorOrcidhttps://orcid.org/0000-0001-8097-0629
dc.date.accessioned2022-01-12T21:54:05Z
dc.date.available2022-01-12T21:54:05Z
dc.date.issued2021-04-05
dc.description.abstract© 2020 by the authors.In this paper, an energy and exergy analysis is applied to the air dehumidification unit of a liquid desiccant system in an industrial gelatin conveyor dryer. The working fluid is a binary solution of lithium chloride (LiCl) in water. Dry air is used in order to decrease the amount of liquid in the gelatin. Therefore, the environmental air must have its absolute humidity reduced from about 12 g/kg to the project target, which is 5 g/kg. The process is a cycle using an absorption desiccant unit (LiCl in water), where the weak solution absorbs water vapor from the air. In the regenerator, condensation of the solution (desorption) from the moist air occurs. As a result, the steam consumption of the desorber and electrical power used for the vapor compression chiller (with ammonia, NH3, as working fluid) are the primary sources of cost for the factory. To improve the plant’s energy and exergy behaviors, the process is evaluated using a mathematical model of the system processes. In addition, we evaluate the substitution of the vapor compression chiller by an absorption unit (lithium bromide (LiBr) in water). The performance indicators of the compression vapor systems showed the best results. Even when using the condenser’s energy to pre-heat the solution, the installed system proved to be more effective.
dc.description.issuenumber4
dc.description.volume23
dc.identifier.citationLIMA, L. S.; MADY, C. Energy and exergy analysis of an absorption and mechanical system for a dehumidification unit in a gelatin factory. Entropy, v. 23, n. 4, apr. 2021.
dc.identifier.doi10.3390/e23040415
dc.identifier.issn1099-4300
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/3581
dc.relation.ispartofEntropy
dc.rightsAcesso Aberto
dc.rights.licenseCreative Commons "Este é um artigo publicado em acesso aberto sob uma licença Creative commons (CC BY 4.0). Fonte: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85104329838&origin=inward. Acesso em: 18 jan. 2023.
dc.subject.otherlanguageAbsorption unit
dc.subject.otherlanguageAir dehumidification
dc.subject.otherlanguageDesiccant system
dc.subject.otherlanguageExergy analysis
dc.titleEnergy and exergy analysis of an absorption and mechanical system for a dehumidification unit in a gelatin factory
dc.typeArtigo
fei.scopus.citations3
fei.scopus.eid2-s2.0-85104329838
fei.scopus.updated2024-07-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85104329838&origin=inward
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