Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricants
As electric vehicles (EVs) continue to replace conventional gasoline vehicles, maintaining thermal comfort within the car requires additional energy to operate the automotive air-conditioning (AAC) system. This work aims to optimise the electrically driven compressor (EDC) system utilising polyol-es...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24000765 |
| _version_ | 1797311514207584256 |
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| author | N.N.M. Zawawi W.H. Azmi A.H. Hamisa Tri Yuni Hendrawati A.R.M. Aminullah |
| author_facet | N.N.M. Zawawi W.H. Azmi A.H. Hamisa Tri Yuni Hendrawati A.R.M. Aminullah |
| author_sort | N.N.M. Zawawi |
| collection | DOAJ |
| description | As electric vehicles (EVs) continue to replace conventional gasoline vehicles, maintaining thermal comfort within the car requires additional energy to operate the automotive air-conditioning (AAC) system. This work aims to optimise the electrically driven compressor (EDC) system utilising polyol-ester (POE)-based binary nanolubricants to enhance performance and minimise the size of the EV battery and AAC components. A binary nanolubricant was formulated using a two-step method of formulation. The TiO2–SiO2/POE binary nanolubricant was prepared at different volume concentrations ranging from 0.01 to 0.1 %. The experiment was conducted for the 1200–3840 rpm compressor speed with different initial refrigerant charges between 120 and 160 g. The heat absorption rose by up to 44.2 % while utilising the binary nanolubricant at a volume concentration of 0.03 %. The coefficient of performance (COP) reached its maximum value of 2.43 at a refrigerant charge of 160 g and compressor speed of 1860 rpm. Furthermore, the binary nanolubricant significantly reduced the expansion valve discharge temperature, exhibiting a substantial decrease of up to 51.6 %. The highest COP increment, up to 23.4 %, was achieved at a volume concentration of 0.03 %. Hence, it is recommended to utilise 0.03 % TiO2–SiO2/POE binary nanolubricant to achieve optimal performance in the AAC-EDC system. |
| first_indexed | 2024-03-08T02:00:50Z |
| format | Article |
| id | doaj.art-69aaed1c744e43788a873b6b1548ac3a |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-08T02:00:50Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-69aaed1c744e43788a873b6b1548ac3a2024-02-14T05:17:07ZengElsevierCase Studies in Thermal Engineering2214-157X2024-02-0154104045Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricantsN.N.M. Zawawi0W.H. Azmi1A.H. Hamisa2Tri Yuni Hendrawati3A.R.M. Aminullah4Centre for Research in Advanced Fluid and Processes, Lebuhraya Tun Razak, 26300, Gambang, Kuantan, Pahang, MalaysiaCentre for Research in Advanced Fluid and Processes, Lebuhraya Tun Razak, 26300, Gambang, Kuantan, Pahang, Malaysia; Faculty of Mechanical and Automotive Engineering Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, 26600, Pekan, Pahang, Malaysia; Corresponding author. Centre for Research in Advanced Fluid and Processes, Lebuhraya Tun Razak, 26300, Gambang, Kuantan, Pahang, Malaysia.Faculty of Mechanical and Automotive Engineering Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, 26600, Pekan, Pahang, Malaysia; Faculty of Science, Engineering and Agrotechnology, University College of Yayasan Pahang, 25050, Kuantan, Pahang, MalaysiaDepartment of Chemical Engineering, Universitas Muhammadiyah Jakarta, Jl. Cempaka Putih Tengah 27, Jakarta, 10510, IndonesiaFaculty of Mechanical and Automotive Engineering Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, 26600, Pekan, Pahang, MalaysiaAs electric vehicles (EVs) continue to replace conventional gasoline vehicles, maintaining thermal comfort within the car requires additional energy to operate the automotive air-conditioning (AAC) system. This work aims to optimise the electrically driven compressor (EDC) system utilising polyol-ester (POE)-based binary nanolubricants to enhance performance and minimise the size of the EV battery and AAC components. A binary nanolubricant was formulated using a two-step method of formulation. The TiO2–SiO2/POE binary nanolubricant was prepared at different volume concentrations ranging from 0.01 to 0.1 %. The experiment was conducted for the 1200–3840 rpm compressor speed with different initial refrigerant charges between 120 and 160 g. The heat absorption rose by up to 44.2 % while utilising the binary nanolubricant at a volume concentration of 0.03 %. The coefficient of performance (COP) reached its maximum value of 2.43 at a refrigerant charge of 160 g and compressor speed of 1860 rpm. Furthermore, the binary nanolubricant significantly reduced the expansion valve discharge temperature, exhibiting a substantial decrease of up to 51.6 %. The highest COP increment, up to 23.4 %, was achieved at a volume concentration of 0.03 %. Hence, it is recommended to utilise 0.03 % TiO2–SiO2/POE binary nanolubricant to achieve optimal performance in the AAC-EDC system.http://www.sciencedirect.com/science/article/pii/S2214157X24000765NanolubricantPolyol-esterRefrigeration systemElectric compressorHybrid vehicle |
| spellingShingle | N.N.M. Zawawi W.H. Azmi A.H. Hamisa Tri Yuni Hendrawati A.R.M. Aminullah Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricants Case Studies in Thermal Engineering Nanolubricant Polyol-ester Refrigeration system Electric compressor Hybrid vehicle |
| title | Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricants |
| title_full | Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricants |
| title_fullStr | Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricants |
| title_full_unstemmed | Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricants |
| title_short | Experimental investigation of air-conditioning electrical compressor using binary TiO2–SiO2 polyol-ester nanolubricants |
| title_sort | experimental investigation of air conditioning electrical compressor using binary tio2 sio2 polyol ester nanolubricants |
| topic | Nanolubricant Polyol-ester Refrigeration system Electric compressor Hybrid vehicle |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24000765 |
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