témavezető: Gróf Gyula
helyszín (magyar oldal): Department of Energy Engineering helyszín rövidítés: EGR
A kutatási téma leírása:
a.) Antecedents:
Nanofluids have received attention in recent years due to its importance in various industrial applications especially in the renewable energy field since theirs advances in thermal energy storage systems, solar collectors, solar stills, and photovoltaic/thermal systems. With the application of nanomaterials, the efficiency of energy systems can increase substantially while reducing the production costs.
b.) Aim of research:
• Determine the heat transfer mechanism in solar collectors in presents of nanofluids as heat transfer medium.
• Working out techniques to improve the efficiency of solar collector and design energy storage facilities by using mathematical modeling, improve the structure of present equipment and find suitable operating conditions and modes for nanofluids.
• Find techniques for preparation of nanofluids with excellent stability
c.) Tasks, main items, necessary time:
Collect the relevant literature on the application of nanofluids in solar collectors and energy storage facilities, and get familiar with the operating regulations of present laboratory equipment (6 months) According to the transmission characteristics of nanofluids, design the modification plan of the test station for solar collector. (6 months). Install new facilities and modify the test station, determine the preparation plan of nanofluids with excellent stability and measure the related thermophysical parameter. (6 months). Cary out the experiments at the test station for solar collectors by using embedded structures and nanofluids. (6 months). Learn and debug the commercial simulation software, program the code according to the specific situation, optimize the calculation method of the application software. (6 months). Simulate computerized numerical value of new transportation conditions, compare experimental results. (6 months) According to the results of comparison, remodify the test station and energy storage facilities. (6 months) Write graduation thesis and participate in academic oral defense system by referring to previous reports and published conference or periodical paper.
d.) Required equipment:
Solar test facility, computer, access to literature and databases, mathematical/simulation software
e.) Expected scientific results:
Sophisticated model for heat transfer mechanism in solar systems. Design formulas (theoretical and empirical) for application of nanofluids in various solar systems. New technique for preparation high-stability nanofluids. Numerical model for heat transport mechanism for application of nanofluids. Publishing 3-5 papers in the international journals with high impact factors, as well as to contribute several posters and/or oral presentations on at least 2-3 different scientific conferences
f.) References:
1. Sharafeldin, M. A. ; Gróf, Gyula: Efficiency of evacuated tube solar collector using WO3/Water nanofluid, RENEWABLE ENERGY 134 pp. 453-460. , 8 p. (2019)
2. Sheikhani, Hamideh ; Barzegarian, Ramtin ; Heydari, Ali ; Kianifar, Ali ; Kasaeian, Alibakhsh ; Grof, Gyula ; Mahian, Omid: A review of solar absorption cooling systems combined with various auxiliary energy devices, JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 134 : 3 pp. 2197-2212. , 16 p. (2018)
3. Sharafeldin, Mahmoud A ; Gróf, Gyula ; Mahian, Omid: Experimental study on the performance of a flat-plate collector using WO3/Water nanofluids, ENERGY 141 pp. 2436-2444. , 9 p. (2017)
4. Sharafeldin, MA ; Grof, G.: Experimental investigation of flat plate solar collector using CeO2-water nanofluid, ENERGY CONVERSION AND MANAGEMENT 155 : 1 pp. 32-41. , 10 p. (2018)
5. Sharafeldin, M A ; Gróf, Gy: Evacuated tube solar collector performance using CeO2/water nanofluid JOURNAL OF CLEANER PRODUCTION 185 pp. 347-356. , 10 p. (2018)
előírt nyelvtudás: english felvehető hallgatók száma: 1
Jelentkezési határidő: 2019-10-12
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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