Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making Process
The enhancement of the thermal properties of insulating oils has positively reflected on the performance of the electrical equipment that contains these oils. Nanomaterial science plays an influential role in enhancing the different properties of liquids, especially insulating oils. Although a minim...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/13/1951 |
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| author | Hesham S. Karaman Adel Z. El Dein Diaa-Eldin A. Mansour Matti Lehtonen Mohamed M. F. Darwish |
| author_facet | Hesham S. Karaman Adel Z. El Dein Diaa-Eldin A. Mansour Matti Lehtonen Mohamed M. F. Darwish |
| author_sort | Hesham S. Karaman |
| collection | DOAJ |
| description | The enhancement of the thermal properties of insulating oils has positively reflected on the performance of the electrical equipment that contains these oils. Nanomaterial science plays an influential role in enhancing the different properties of liquids, especially insulating oils. Although a minimum oil circuit breaker (MOCB) is one of the oldest circuit breakers in the electrical network, improving the insulating oil properties develops its performance to overcome some of its troubles. In this paper, 66 kV MOCB is modeled by COMSOL Multiphysics software. The internal temperature and the internally generated heat energy inside the MOCB during the making process of its contacts are simulated at different positions of the movable contact. This simulation is introduced for different modified insulating oils (mineral oil and synthetic ester oil) with different types of nanoparticles at different concentrations (0.0, 0.0025, 0.005, and 0.01 wt%). From the obtained results, it is noticed that the thermal stress on the MOCB can be reduced by the use of high thermal conductivity insulating oils. Nano/insulating oils decrease internal temperature and generate heat energy inside the MOCB by about 17.5%. The corresponding physical mechanisms are clarified considering the thermophoresis effect. |
| first_indexed | 2024-03-11T01:33:12Z |
| format | Article |
| id | doaj.art-5bee9ead45e94c3a89289754142c8bc0 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T01:33:12Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-5bee9ead45e94c3a89289754142c8bc02023-11-18T17:11:46ZengMDPI AGNanomaterials2079-49912023-06-011313195110.3390/nano13131951Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making ProcessHesham S. Karaman0Adel Z. El Dein1Diaa-Eldin A. Mansour2Matti Lehtonen3Mohamed M. F. Darwish4Department of Electrical Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo 11629, EgyptDepartment of Electrical Engineering, Faculty of Energy Engineering, Aswan University, Aswan 81528, EgyptDepartment of Electrical Power Engineering, Egypt-Japan University of Science and Technology (E-JUST), New Borg El-Arab City 21934, Alexandria, EgyptDepartment of Electrical Engineering and Automation, School of Electrical Engineering, Aalto University, 02150 Espoo, FinlandDepartment of Electrical Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo 11629, EgyptThe enhancement of the thermal properties of insulating oils has positively reflected on the performance of the electrical equipment that contains these oils. Nanomaterial science plays an influential role in enhancing the different properties of liquids, especially insulating oils. Although a minimum oil circuit breaker (MOCB) is one of the oldest circuit breakers in the electrical network, improving the insulating oil properties develops its performance to overcome some of its troubles. In this paper, 66 kV MOCB is modeled by COMSOL Multiphysics software. The internal temperature and the internally generated heat energy inside the MOCB during the making process of its contacts are simulated at different positions of the movable contact. This simulation is introduced for different modified insulating oils (mineral oil and synthetic ester oil) with different types of nanoparticles at different concentrations (0.0, 0.0025, 0.005, and 0.01 wt%). From the obtained results, it is noticed that the thermal stress on the MOCB can be reduced by the use of high thermal conductivity insulating oils. Nano/insulating oils decrease internal temperature and generate heat energy inside the MOCB by about 17.5%. The corresponding physical mechanisms are clarified considering the thermophoresis effect.https://www.mdpi.com/2079-4991/13/13/1951insulating oilnanofluidsminimum oil circuit breakerthermal properties |
| spellingShingle | Hesham S. Karaman Adel Z. El Dein Diaa-Eldin A. Mansour Matti Lehtonen Mohamed M. F. Darwish Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making Process Nanomaterials insulating oil nanofluids minimum oil circuit breaker thermal properties |
| title | Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making Process |
| title_full | Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making Process |
| title_fullStr | Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making Process |
| title_full_unstemmed | Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making Process |
| title_short | Influence of Mineral Oil-Based Nanofluids on the Temperature Distribution and Generated Heat Energy Inside Minimum Oil Circuit Breaker in Making Process |
| title_sort | influence of mineral oil based nanofluids on the temperature distribution and generated heat energy inside minimum oil circuit breaker in making process |
| topic | insulating oil nanofluids minimum oil circuit breaker thermal properties |
| url | https://www.mdpi.com/2079-4991/13/13/1951 |
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