Nugroho, A. and Rizalman, Mamat and Xiaoxia, J. and Bo, Z. and Mohd Faizal, Jamlos and Mohd Fairusham, Ghazali (2023) Performance enhancement and optimization of residential air conditioning system in response to the novel FAl2O3-POE nanolubricant adoption. Heliyon, 9 (10). pp. 1-19. ISSN 2405-8440. (Published)
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Abstract
This paper aims to evaluate residential air conditioning systems' performance enhancement and optimization by adopting a novel functionalized Al2O3 (FAl2O3)–Polyolester (POE) nanolubricant. Comprehensive discussions were conducted on key performance parameters, including heat absorption, compressor work, cooling capacity, coefficient of performance (COP), and power consumption. Novel FAl2O3 nanoparticles were dispersed into the POE lubricant using a two-step method. The findings reveal that FAl2O3–POE nanolubricant exhibits superior heat absorption compared to pure POE. Heat absorption decreases with an increased initial refrigerant charge, while cooling capacity performance improves with an increased initial refrigerant charge. The COP shows an increasing trend at all concentrations of FAl2O3–POE nanolubricant when operating with R32. FAl2O3–POE/R32 demonstrates an enhanced range of 3.12%–32.26% for COP. The results suggest that applying novel FAl2O3–POE nanolubricant with R32 can reduce electrical power consumption by 13.79%–19.35%. The central composite design (CCD) offers an optimal condition for FAl2O3–POE nanolubricant with a concentration of 0.11 vol%, an initial refrigerant charge of 0.442 kg, resulting in a COP of 3.982, a standard error of 0.019, and a desirability of 1.0.
| Item Type: | Article |
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| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Air conditioning systems; Central composite design optimization; FAl2O3–POE nanolubricant; Functionalized Al2O3; Response surface methodology (RSM) |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TL Motor vehicles. Aeronautics. Astronautics |
| Faculty/Division: | Institute of Postgraduate Studies Centre for Automotive Engineering (Automotive Centre) Faculty of Electrical and Electronic Engineering Technology Faculty of Mechanical and Automotive Engineering Technology Centre for Research in Advanced Fluid & Processes (Fluid Centre) |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 11 Jun 2024 04:23 |
| Last Modified: | 11 Jun 2024 04:23 |
| URI: | http://umpir.ump.edu.my/id/eprint/41549 |
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