Abdul Majid, Zafri Azran and Zakaria, Zairul Azrul and Harun, Muhammad Amin and Ihsan, Sany Izan and Syed Abu Bakar, Syed Noh and Sulaiman, Nabila and Ismail, Ahmad Faris and Abdul Razak, Amir and Sharol, Ahmad Fadzil and Sopian, Kamaruzzaman (2024) Portable mini solar dryer. In: IIUM Research & Innovation Day 2024 (IRID 2024), 2 July 2024, Grand Hall, Office of Campus Director (OCD), IIUM Kuantan Campus, Pahang, Malaysia.
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Abstract
PURPOSE: this study aims to design, develop and investigate the thermal performance of an Evacuated Glass-Thermal Absorber Tube Collector (EGATC) for air heating applications. METHODS: EGATC was designed from a conventional HP ETC, and the performance was compared through parameter and performance experimental setup. The three days performance experiments showed EGATC performed better with daily outlet temperature increased by 9.0%, 7.2%, and 4.9%, respectively, with an average of 7.0% compared with HP ETC. EGATC also had greater efficiency compared to HP ETC, with the average efficiency for EGATC being 51.3% compared with HP ETC's 41.8%. EGATC's inner absorber was designed to create a double pass flow with the ventilated chamber. RESULTS: The parameter experiment shows the design could increase the outlet temperature by a difference of 6.3% (for stainless- steel inner absorber compared with insulation material inner absorber). Regarding energy storage, the stainless-steel inner absorber also had an advantage compared to the insulation material inner absorber, with a 1.3% difference. On the effect of other parameters such as inner absorber surface area air contact (perforated fin), outer absorber selective coating surface, outer absorber wall thickness, double layer non-vacuum glass tube, single layer transparent outer glass tube, and single-layer thin film inner glass tube was investigated by parameter experimental setup on energy storage. It was proven that the outlet temperature, energy store, and energy buffer could be enhanced with the combination of wind speed 0.9 m/s, zero (0) perforated fin, non-coating outer absorber, and 1mm outer absorber wall thickness. It was also reported that double-layer vacuum glass tubes promise better thermal performance enhancement compared with double-layer non-vacuum glass tubes, single layer transparent outer glass tubes, and single-layer thin film inner glass tubes. The mathematical equation of each EGATC component was formulated based on the first law of thermodynamics. The total acceptable error of 5% shows that the model at each node was valid. The performance curves for those 0 fins (equation), 0 fin (experimental), and 3 fins (experimental) were obtained. The results showed that the efficiency (collector + storage) was affected by the number of fins. The efficiency (collector + storage) was 68.7%, 71.2%, and 71.0%, respectively. CONCLUSION: The application of EGATC in air heating applications proved beneficial to the application of solar drying processes, especially in equatorial climate countries such as Malaysia. Furthermore, it can be applied as one of the home appliance as a Portable Mini Solar Dryer.
| Item Type: | Proceeding Paper (Poster) |
|---|---|
| Additional Information: | 4556/130962 |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TJ Mechanical engineering and machinery > TJ163.26 Energy conservation |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Allied Health Sciences > Department of Diagnostic Imaging and Radiotherapy Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering |
| Depositing User: | Dr. Zafri Azran Abdul Majid |
| Date Deposited: | 22 Aug 2026 23:08 |
| Last Update: | 22 Aug 2026 23:08 |
| Queue Number: | 2026-08-Q4872 |
| URI: | http://irep.iium.edu.my/id/eprint/130962 |
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