Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface Methodology
In this paper, the effect of melting characteristics of CuO/paraffin wax composite phase change material in a spherical heat storage unit in a constant temperature water bath is investigated. Experiments were conducted in three different water bath temperatures (65 °C, 70 °C, and 75 °C). The inner s...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/15/8595 |
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| author | Liwei Lu Rui Tian Xuan Gong Yuanxing Zhao |
| author_facet | Liwei Lu Rui Tian Xuan Gong Yuanxing Zhao |
| author_sort | Liwei Lu |
| collection | DOAJ |
| description | In this paper, the effect of melting characteristics of CuO/paraffin wax composite phase change material in a spherical heat storage unit in a constant temperature water bath is investigated. Experiments were conducted in three different water bath temperatures (65 °C, 70 °C, and 75 °C). The inner surface of the sphere was fixed with two, four, and six pin-shaped fins 3 mm in diameter. The spheres were filled with different mass fractions of CuO nanoparticles/paraffin phase change materials. Experimental CCD was used to model and optimize the spherical thermal storage unit. Regression models were developed to predict the effects of various operational factors on the melting time of the composite PCM. The factors in the model included the number of pin fins in the spherical heat storage unit, the water bath temperature, and the content of added CuO nanoparticles in the PCM, and ANOVA was used to statistically validate the regression model. The results showed that the interaction between the water bath temperature and the number of pin fins had the most significant effect on the melting time. With the melting time of the phase change material as the optimized objective function, the optimized optimal working condition was six pin fins, a water bath temperature of 75 °C, and the addition of 5 wt% CuO nanoparticles/paraffin phase change material, and the actual melting time under this condition was 78.9 min, which was lower than the predicted value of 79.4 min, with an error of 0.63% between them. |
| first_indexed | 2024-03-11T00:32:50Z |
| format | Article |
| id | doaj.art-f48d4970456c4e5dbdeb90f603e5e25a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T00:32:50Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f48d4970456c4e5dbdeb90f603e5e25a2023-11-18T22:34:57ZengMDPI AGApplied Sciences2076-34172023-07-011315859510.3390/app13158595Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface MethodologyLiwei Lu0Rui Tian1Xuan Gong2Yuanxing Zhao3College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, ChinaCollege of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010051, ChinaCollege of Electrical Engineering, Inner Mongolia University of Technology, Hohhot 010051, ChinaCollege of Energy and Transportation Engineering, Inner Mongolia Agricultural University, Hohhot 010018, ChinaIn this paper, the effect of melting characteristics of CuO/paraffin wax composite phase change material in a spherical heat storage unit in a constant temperature water bath is investigated. Experiments were conducted in three different water bath temperatures (65 °C, 70 °C, and 75 °C). The inner surface of the sphere was fixed with two, four, and six pin-shaped fins 3 mm in diameter. The spheres were filled with different mass fractions of CuO nanoparticles/paraffin phase change materials. Experimental CCD was used to model and optimize the spherical thermal storage unit. Regression models were developed to predict the effects of various operational factors on the melting time of the composite PCM. The factors in the model included the number of pin fins in the spherical heat storage unit, the water bath temperature, and the content of added CuO nanoparticles in the PCM, and ANOVA was used to statistically validate the regression model. The results showed that the interaction between the water bath temperature and the number of pin fins had the most significant effect on the melting time. With the melting time of the phase change material as the optimized objective function, the optimized optimal working condition was six pin fins, a water bath temperature of 75 °C, and the addition of 5 wt% CuO nanoparticles/paraffin phase change material, and the actual melting time under this condition was 78.9 min, which was lower than the predicted value of 79.4 min, with an error of 0.63% between them.https://www.mdpi.com/2076-3417/13/15/8595phase change materialspherical heat storage unitfinresponse surface methodology |
| spellingShingle | Liwei Lu Rui Tian Xuan Gong Yuanxing Zhao Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface Methodology Applied Sciences phase change material spherical heat storage unit fin response surface methodology |
| title | Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface Methodology |
| title_full | Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface Methodology |
| title_fullStr | Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface Methodology |
| title_full_unstemmed | Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface Methodology |
| title_short | Enhanced Heat Transfer Study of Spherical Heat Storage Based on Response Surface Methodology |
| title_sort | enhanced heat transfer study of spherical heat storage based on response surface methodology |
| topic | phase change material spherical heat storage unit fin response surface methodology |
| url | https://www.mdpi.com/2076-3417/13/15/8595 |
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