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http://hdl.handle.net/1843/77299| Type: | Artigo de Evento |
| Title: | Total equivalent warming impact of alternative refrigerants for replacement of R-22 |
| Authors: | Leonardo Victor Silva Martins Luiz Machado Tiago de Freitas Paulino Juan Jose Garcia Pabon Willian Duarte Moreira |
| Abstract: | The Montreal Protocol and its amendments have been increasingly restricting the use of refrigerant fluids, considering the significant environmental impact they can cause. However, a large portion of refrigeration and air conditioning units in developing countries like Brazil still operate with R-22, and discarding these equipments solely due to the refrigerant would result in not only economic but also environmental damages. In order to reuse these equipments, it is interesting to evaluate alternative refrigerants that, with minor modifications to the system, enable their reuse. Therefore, this study compared the coefficient of performance (COP) of R-22 and some of its alternatives as well as the Total Equivalent Warming Impact. The refrigerants considered were R-407C, R-444B, and R-454C. For this purpose, a lumped model was used for the heat exchangers and the model described in the Canadian standard AHRI 540 was used to the compressor. The average difference of COP was -9.24%, -5.02%, and -13.91% for R-407C, R-444B, and R-454C fluids, respectively. Total Equivalent Warming Impact found was 12.32, 12.37, 9.84 and 10.12 for the refrigerants R-22, R-407C, R-444B, and R-454C, respectively. In conclusion, considering the conditions and data of the study, the best refrigerant for retrofit of R-22 is the R-444B. |
| Subject: | Engenharia mecânica Modelos matemáticos |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ENG - DEPARTAMENTO DE ENGENHARIA MECÂNICA |
| Rights: | Acesso Aberto |
| URI: | http://hdl.handle.net/1843/77299 |
| Issue Date: | 2023 |
| metadata.dc.url.externa: | https://eventos.abcm.org.br/cobem2023/ |
| metadata.dc.relation.ispartof: | Congresso Brasileiro de Engenharia Mecânica |
| Appears in Collections: | Artigo de Evento |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| TOTAL EQUIVALENT WARMING IMPACT OF ALTERNATIVE REFRIGERANTS FOR REPLACEMENT OF R-22.pdf | 543.89 kB | Adobe PDF | View/Open |
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