Investigating the impacts of using TiO2-ZnO/POE hybrid nanolubricant in a heat pump system: An experimental study

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dc.authoridYILDIZ, Gökhan/0000-0001-6039-9226;en_US
dc.authorscopusid57197853880en_US
dc.authorwosidYILDIZ, Gökhan/AAA-5700-2021en_US
dc.authorwosidyıldız, gökhan/GSO-2803-2022en_US
dc.contributor.authorYildiz, Gokhan
dc.date.accessioned2024-08-23T16:04:57Z
dc.date.available2024-08-23T16:04:57Z
dc.date.issued2024en_US
dc.departmentDüzce Üniversitesien_US
dc.description.abstractHeating, cooling, and ventilation systems have a share in the majority of energy consumption in buildings. The use of heat pumps (HP) is becoming widespread to reduce energy consumption in buildings to improve this circumstance around the world. The slightest improvement in the heating, cooling and ventilation system will provide significant energy savings in total. For this reason, the use of nanoparticles in these systems has become quite common due to the increase in the thermal properties of fluids. In this study, the thermodynamic and economic performances of the system used at different mass flow rates (10 g/s, 30 g/s and 50 g/s) with the addition of mono and hybrid nanoparticles to pure POE (Polyol ester oil) used in an air -to -water HP were compared. TiO2 and ZnO nanoparticles were used in 0.8 g/L and 1.6 g/L fractions to obtain mono and hybrid nanolubricants. As a result of the experiments, significant improvements were determined in the thermal conductivity and viscosity values of mono and hybrid nanolubricants compared to pure POE. An increase of 4.89 % was observed in the COP value of the system using 1.6 g/L TiO2-ZnO/POE hybrid nanolubricant compared to pure POE. The exergy efficiency of the HP improved by 8.39 % compared to pure POE in the same nanolubricant. The lowest heating cost was obtained in 1.6 g/L TiO2-ZnO/POE hybrid nanolubricant as 4.7844 kWh/$ at 50 g/s mass flow rate. It is seen that as the fractions of mono and hybrid nanolubricants increase, the COP and exergy efficiency of the system increases compared to pure POE. Consequently, better results were obtained from mono and hybrid nanolubricants used in the HP compared to pure POE, energetically, exergetically and economically. In addition, better performance was obtained as the mass flow rate of the system and the fraction of hybrid nanolubricants increased.en_US
dc.identifier.doi10.1016/j.applthermaleng.2024.122377
dc.identifier.issn1359-4311
dc.identifier.issn1873-5606
dc.identifier.scopus2-s2.0-85182030938en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.applthermaleng.2024.122377
dc.identifier.urihttps://hdl.handle.net/20.500.12684/14423
dc.identifier.volume241en_US
dc.identifier.wosWOS:001153059000001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorYildiz, Gokhanen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofApplied Thermal Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHeat pumpen_US
dc.subjectHybrid nanofluiden_US
dc.subjectEnergyen_US
dc.subjectExergyen_US
dc.subjectEconomicen_US
dc.subjectThermo-Physical Propertiesen_US
dc.subjectMhd Natural-Convectionen_US
dc.subjectEnergy-Efficienten_US
dc.subjectBrownian-Motionen_US
dc.subjectExergy Analysisen_US
dc.subjectNanoparticlesen_US
dc.subjectPerformanceen_US
dc.subjectNanofluidsen_US
dc.subjectConductivityen_US
dc.subjectEnhancementen_US
dc.titleInvestigating the impacts of using TiO2-ZnO/POE hybrid nanolubricant in a heat pump system: An experimental studyen_US
dc.typeArticleen_US

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