Please use this identifier to cite or link to this item:
http://hdl.handle.net/1843/57501
Type: | Artigo de Evento |
Title: | Estudo comparativo de um ar condicionado convencional utilizando um fluido refrigerante alternativo ao R-410A para aplicação em escritórios |
Other Titles: | Comparative study of a conventional air conditioner using different refrigerant as an alternative for R-410A |
Authors: | Leonardo Victor Silva Martins Tiago de Freitas Paulino Ramon de Paoli Mendes Luiz Machado Willian Moreira Duarte |
Abstract: | Há um cronograma global para redução/banimento de diversos fluidos refrigerantes, em função de impactos ambientais. Entretanto, grande parte das unidades de refrigeração e climatização em países em desenvolvimento, como o Brasil, operam com o R-22. Com o intuito de reaproveitar esses equipamentos, é interessante avaliar fluidos alternativos que, com algumas modificações no sistema, possibilitem reaproveitalos. Em função disso, este trabalho comparou o COP durante um ano de um sistema de ar condicionado do tipo split utilizando o R-410A e o R-290, bem como o TEWI para ambos os fluidos. Para isso, foi utilizado um modelo matemático desenvolvido no Equation Engineering Solver (EES), englobando os componentes do sistema e a zona térmica. Adicionalmente, foram consideradas também as variações climáticas e os seus impactos nesse recinto avaliado. Por meio desse estudo, foi possível constatar que o R-290, quando comparado ao R-410A apresentou, em média, um COP 44% maior, com uma carga de refrigerante 45% menor, além de um TEWI 77% menor. Esses valores sugerem que, analisando do ponto de vista de desempenho e impacto ambiental (TEWI), o R-290 é uma alternativa bem interessante para o R-410A como substituto nesses equipamentos já existentes e mesmo para novos sistemas. |
Abstract: | There is a global schedule to reduce/ban various refrigerants, due to environmental impacts. There is a global schedule to reduce/ban various refrigerants, due to environmental impacts.However, most refrigeration and air conditioning units in developing countries, such as Brazil, operate with R22. In order to reuse this equipment, it is interesting to evaluate alternative fluids that, with some modifications in the system, make it possible to reuse them. As a result, this work compared the COP during one year of a split-type air conditioning system using R-410A and R-290, as well as TEWI for both fluids. For this, a mathematical model developed in the Equation Engineering Solver (EES) was used, encompassing the system components and the thermal zone. Additionally, climatic variations and their impacts on the evaluated enclosure were also considered. Through this study, it was possible to verify that R-290, when compared to R410A, presented, on average, a 44% higher COP, with a 45% lower refrigerant charge, in addition to a 77% lower TEWI. These values suggest that, from the point of view of performance and environmental impact (TEWI), R-290 is a very interesting alternative to R-410A as a replacement for these existing equipment and even for new systems. However, most refrigeration and air conditioning units in developing countries, such as Brazil, operate with R22. In order to reuse this equipment, it is interesting to evaluate alternative fluids that, with some modifications in the system, make it possible to reuse them. As a result, this work compared the COP during one year of a split-type air conditioning system using R-410A and R-290, as well as TEWI for both fluids. For this, a mathematical model developed in the Equation Engineering Solver (EES) was used, encompassing the system components and the thermal zone. Additionally, climatic variations and their impacts on the evaluated enclosure were also considered. Through this study, it was possible to verify that R-290, when compared to R410A, presented, on average, a 44% higher COP, with a 45% lower refrigerant charge, in addition to a 77% lower TEWI. These values suggest that, from the point of view of performance and environmental impact (TEWI), R-290 is a very interesting alternative to R-410A as a replacement for these existing equipment and even for new systems. |
Subject: | Engenharia mecânica Modelos matemáticos Ar condicionado |
language: | por |
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 |
metadata.dc.identifier.doi: | http://dx.doi.org/10.29327/xxiiconemi.563616 |
URI: | http://hdl.handle.net/1843/57501 |
Issue Date: | 5-Apr-2023 |
metadata.dc.url.externa: | http://dx.doi.org/10.29327/xxiiconemi.563616 |
Appears in Collections: | Artigo de Evento |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
ESTUDO COMPARATIVO DE UM AR CONDICIONADO CONVENCIONAL UTILIZANDO UM FLUIDO - PDFA.pdf | 1.2 MB | Adobe PDF | View/Open |
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