Energetic, exergetic, and thermoeconomic analyses of different nanoparticles-added lubricants in a heat pump water heater

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dc.authoridAfzal, Asif/0000-0003-2961-6186
dc.authoridSaleel, C Ahamed/0000-0003-3705-4371
dc.authoridyildiz, gokhan/0000-0001-6039-9226
dc.contributor.authorYildiz, Gokhan
dc.contributor.authorAgbulut, Umit
dc.contributor.authorGurel, Ali Etem
dc.contributor.authorErgun, Alper
dc.contributor.authorAfzal, Asif
dc.contributor.authorSaleel, C. Ahamed
dc.date.accessioned2024-09-29T15:55:15Z
dc.date.available2024-09-29T15:55:15Z
dc.date.issued2022
dc.departmentKarabük Üniversitesien_US
dc.description.abstractThe heat pumps are frequently used in domestic and industrial applications for hot water supply. The present paper aims to thermodynamically investigate the impacts of the nanoparticle-addition into the lubricants on the energetic, exergetic, and thermoeconomic aspects of a heat pump. In the experiments, air to the water heat pump is separately charged with various metal oxide-based nanoparticles (Al2O3, CuO, and TiO2)-added oils at a constant mass fraction of 0.5%. Polyolester (POE) and 134a are used as a lubricant, and refrigerant, respectively. The mass flow rates of the water passed through the condenser are varied from 10 to 25 g/s with an interval of 5 g/s. In the results, it is observed that the thermal conductivity value noteworthy increases with the presence of nanoparticles in POE. The highest increment in thermal conductivity is found to be 39% for POE + CuO in comparison with that of pure POE. Furthermore, with nanoparticles addition, it is noticed that the COP value generally improves, and the highest improvement for COP value is noticed to be 8% for POE + TiO2 nanolubricant at the mass flow of 25 g/s. Furthermore, exergy efficiency enhances by 3.6%, 1.8%, and 4.5% for POE + Al2O3, POE + CuO, and POE + TiO2, respectively. The lowest heating cost is calculated to be 3.465 c/kWh at 20 g/s flow rate for POE + Al2O3. In conclusion, this paper clearly reports that usage of nanoparticles along with lubricants is presenting better energetic, exergetic, and thermoeconomic results rather than the usage of lubricant alone in the heat pumps.en_US
dc.description.sponsorshipDeanship of Scientific Research at King Khalid University, Saudi Arabia [RGP 2/26/43]en_US
dc.description.sponsorshipThe authors extend their appreciation to the Deanship of Scientific Research at King Khalid University, Saudi Arabia for funding this work through the Research Group Program under grant no. RGP 2/26/43.en_US
dc.identifier.doi10.1016/j.csite.2022.101975
dc.identifier.issn2214-157X
dc.identifier.scopus2-s2.0-85128288409en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.csite.2022.101975
dc.identifier.urihttps://hdl.handle.net/20.500.14619/4551
dc.identifier.volume33en_US
dc.identifier.wosWOS:000793734100002en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofCase Studies in Thermal Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectHeat pumpen_US
dc.subjectWater heaterNanolubricanten_US
dc.subjectCOPen_US
dc.subjectExergyen_US
dc.subjectMOPSAen_US
dc.subjectThermoeconomic analysisen_US
dc.titleEnergetic, exergetic, and thermoeconomic analyses of different nanoparticles-added lubricants in a heat pump water heateren_US
dc.typeArticleen_US

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