Optimización del rendimiento del refrigerador doméstico con lubricantes variados para el refrigerante R134a : un análisis comparativo

Muhammad Ehtesham ul Haque; Abdul Samad Khan; Adeel Ahmed Khan; Muhammad Anus Irshad

doi:10.36561/ING.29.9

Autores

Muhammad Ehtesham ul Haque NED University of Engineering & Technology, Pakistan https://orcid.org/0000-0001-8751-348X
Abdul Samad Khan NED University of Engineering & Technology, Pakistan https://orcid.org/0009-0005-5449-635X
Adeel Ahmed Khan NED University of Engineering & Technology, Pakistan https://orcid.org/0009-0004-6790-8176
Muhammad Anus Irshad NED University of Engineering & Technology, Pakistan https://orcid.org/0009-0006-8193-4287

DOI:

https://doi.org/10.36561/ING.29.9

Palavras-chave:

Lubrificantes, Óleo éster de poliol, Óleo mineral, R-134a, EES, Refrigerador doméstico

Resumo

A eficiência e o desempenho de refrigeradores domésticos dependem não apenas do refrigerante, mas
também do óleo lubrificante utilizado no compressor. O lubrificante do compressor é responsável pela absorção da
energia térmica liberada durante o funcionamento do compressor. O principal objetivo deste estudo é examinar e
comparar os efeitos de dois óleos lubrificantes distintos, utilizados com o refrigerante R134a, em diversas métricas de
desempenho do compressor de um refrigerador doméstico, incluindo a capacidade do evaporador, o consumo de
energia do compressor e o coeficiente de desempenho (COP) do refrigerador. Esses parâmetros de desempenho foram
comparados em dois casos diferentes: um refrigerador doméstico com R134a como refrigerante, utilizando óleo
mineral (MO) e óleo de éster de poliol (POE), e por dois métodos distintos: manualmente, utilizando a tabela de pH
do R134a, e por meio do software EES. Os testes foram realizados em um refrigerador de duas portas com capacidade
de refrigeração de 329 litros. A mudança do óleo de MO para POE resultou no aumento da capacidade do evaporador
de 1,81 kW para 1,99 kW e do COP de 4,9 para 5,7, enquanto o consumo de energia do compressor reduziu de 370
watts para 340 watts, concluindo-se que o óleo POE é um lubrificante melhor para compressores domésticos em
comparação com o MO.

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Referências

Adelekan, D. S., Ohunakin, O. S., Babarinde, T. O., Odunfa, M. K., Leramo, R. O., Oyedepo, S. O., & Badejo, D. C. (2017). Experimental performance of LPG refrigerant charges with varied concentration of TiO2 nano-lubricants in a domestic refrigerator. Case Studies in Thermal Engineering, 9, 55-61. doi: https://doi.org/10.1016/j.csite.2016.12.002 DOI: https://doi.org/10.1016/j.csite.2016.12.002

Adelekan, D. S., Ohunakin, O. S., Oladeinde, M. H., Jatinder, G., Atiba, O. E., Nkiko, M. O., & Atayero, A. A. (2021). Performance of a domestic refrigerator in varying ambient temperatures, concentrations of TiO2 nanolubricants and R600a refrigerant charges. Heliyon, 7(2), e06156. doi: https://doi.org/10.1016/j.heliyon.2021.e06156 DOI: https://doi.org/10.1016/j.heliyon.2021.e06156

Allouhi, A., El Fouih, Y., Kousksou, T., Jamil, A., Zeraouli, Y., & Mourad, Y. (2015). Energy consumption and efficiency in buildings: current status and future trends. Journal of Cleaner Production, 109, 118-130. doi: https://doi.org/10.1016/j.jclepro.2015.05.139 DOI: https://doi.org/10.1016/j.jclepro.2015.05.139

Baskaran, A., Manikandan, N., Tesfaye, J., Nagaprasad, N., & Krishnaraj, R. (2022). Investigation on the Performance of Domestic Refrigerator with Zirconium Oxide-R134a Nanorefrigerant. Journal of Nanomaterials, 2022, 3668458. doi: https://doi.org/10.1155/2022/3668458 DOI: https://doi.org/10.1155/2022/3668458

Gill, J., Singh, J., Ohunakin, O. S., & Adelekan, D. S. (2018). Energetic and exergetic analysis of a domestic refrigerator system with LPG as a replacement for R134a refrigerant, using POE lubricant and mineral oil based TiO2-, SiO2- and Al2O3-lubricants. International Journal of Refrigeration, 91, 122-135. doi: https://doi.org/10.1016/j.ijrefrig.2018.05.010 DOI: https://doi.org/10.1016/j.ijrefrig.2018.05.010

Gill, J., Singh, J., Ohunakin, O. S., & Adelekan, D. S. (2019). Energy analysis of a domestic refrigerator system with ANN using LPG/TiO2–lubricant as replacement for R134a. Journal of Thermal Analysis and Calorimetry, 135(1), 475-488. doi: https://doi.org/10.1007/s10973-018-7327-3 DOI: https://doi.org/10.1007/s10973-018-7327-3

Handbook, A. (2017). Fundamentals, ASHRAE–American society of heating, Ventilating and Air-Conditioning Engineers: ASHRAE.

Harichandran, R., Paulraj, P., Maha Pon Raja, S., & Kalyana Raman, J. (2019). Effect of h-BN solid nanolubricant on the performance of R134a–polyolester oil-based vapour compression refrigeration system. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 41(3), 140. doi: https://doi.org/10.1007/s40430-019-1645-7 DOI: https://doi.org/10.1007/s40430-019-1645-7

Khan, A. S., ul Haque, M. E., Khan, A. A., Obaidullah, S., & Khan, M. U. (2024). Revitalizing Comfort: Designing an Energy–Efficient HVAC System for the University Auditorium. Memoria Investigaciones en Ingeniería (26), 2-37. doi: https://doi.org/10.36561/ING.26.2 DOI: https://doi.org/10.36561/ING.26.2

Nair, V., Parekh, A. D., & Tailor, P. R. (2020). Experimental investigation of a vapour compression refrigeration system using R134a/Nano-oil mixture. International Journal of Refrigeration, 112, 21-36. doi: https://doi.org/10.1016/j.ijrefrig.2019.12.009 DOI: https://doi.org/10.1016/j.ijrefrig.2019.12.009

Ollukkaran, B. A., & Sreedharan, S. (2023). Motivational factors for Energy Conservation in the workplace: A Focus from Employees Perspective. GMSARN International Journal, 17, 8-13.

Sundaresan, S., Judge, J., Chu, W., & Radermacher, R. (1996). A comparison of the oil return characteristics of R-22/mineral oil, and its HFC alternatives (R-407C & R-410A) with mineral oil and POE in a residential heat pump.

Sundaresan, S., Pate, M., Doerr, T., & Ray, D. (1996). A Comparison of the Effects of POE and Mineral Oil Lubricants on the In-Tube Evaporation of R-22, R-407C and R-410A.

Tada, A., Okido, T., Shono, Y., Takahashi, H., Shitara, Y., & Tanaka, S. (2016). Tribological Characteristics of Polyol Ester Type Refrigeration Oils under Refrigerants Atmosphere. Tribology Online, 11, 348-353. doi: https://doi.org/10.2474/trol.11.348 DOI: https://doi.org/10.2474/trol.11.348

Yogesh, J., Dinesh, Z., & Sandeep, J. (2021). Performance investigation of vapor compression refrigeration system using R134a and R600a refrigerants and Al2O3 nanoparticle-based suspension. Materials Today: Proceedings, 44, 1511-1519. doi: https://doi.org/10.1016/j.matpr.2020.11.732 DOI: https://doi.org/10.1016/j.matpr.2020.11.732