Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network
An optimal prediction model for flow boiling heat transfer of refrigerant mixture R245fa inside horizontal smooth tubes is proposed based on the GRNN neural network. The main factors strongly affecting flow boiling such as mass flux rate (G), heat flux (q), quality of vapor-liquid mixture (x), evapo...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2018/9318048 |
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| _version_ | 1832559390424563712 |
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| author | Meiling Liang Xiaohui Zhang Rong Zhao Xulin Wen Shan Qing Aimin Zhang |
| author_facet | Meiling Liang Xiaohui Zhang Rong Zhao Xulin Wen Shan Qing Aimin Zhang |
| author_sort | Meiling Liang |
| collection | DOAJ |
| description | An optimal prediction model for flow boiling heat transfer of refrigerant mixture R245fa inside horizontal smooth tubes is proposed based on the GRNN neural network. The main factors strongly affecting flow boiling such as mass flux rate (G), heat flux (q), quality of vapor-liquid mixture (x), evaporation temperature (Tev), and tube inner diameter (D) are used as the inputs of the model and the flow boiling heat transfer coefficient (h) as the output. Neural network model is used to optimize the prediction of flow boiling heat transfer coefficient of R245fa in horizontal light pipe through training and learning. The prediction results are in good agreement with the experimental results. For the network model of heat transfer, the average deviation is 7.59%, the absolute average deviation is 4.89%, and the root mean square deviation is 10.51%. The optimized prediction accuracy of flow boiling heat transfer coefficient is significantly improved compared with four frequently used conventional correlations. The simulation results reveal that the modeling method based on R245fa neural network is feasible to calculate the flow boiling heat transfer coefficient, and it may provide some guidelines for the optimization design of tube evaporators for R245fa. |
| format | Article |
| id | doaj-art-fa8e08b7725449d0a090b70a46ccf493 |
| institution | Kabale University |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-fa8e08b7725449d0a090b70a46ccf4932025-02-03T01:30:14ZengWileyComplexity1076-27871099-05262018-01-01201810.1155/2018/93180489318048Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural NetworkMeiling Liang0Xiaohui Zhang1Rong Zhao2Xulin Wen3Shan Qing4Aimin Zhang5Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, ChinaFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan, ChinaKunming Sino-Platinum Metals Catalyst Co. Ltd., Kunming, Yunnan, ChinaAn optimal prediction model for flow boiling heat transfer of refrigerant mixture R245fa inside horizontal smooth tubes is proposed based on the GRNN neural network. The main factors strongly affecting flow boiling such as mass flux rate (G), heat flux (q), quality of vapor-liquid mixture (x), evaporation temperature (Tev), and tube inner diameter (D) are used as the inputs of the model and the flow boiling heat transfer coefficient (h) as the output. Neural network model is used to optimize the prediction of flow boiling heat transfer coefficient of R245fa in horizontal light pipe through training and learning. The prediction results are in good agreement with the experimental results. For the network model of heat transfer, the average deviation is 7.59%, the absolute average deviation is 4.89%, and the root mean square deviation is 10.51%. The optimized prediction accuracy of flow boiling heat transfer coefficient is significantly improved compared with four frequently used conventional correlations. The simulation results reveal that the modeling method based on R245fa neural network is feasible to calculate the flow boiling heat transfer coefficient, and it may provide some guidelines for the optimization design of tube evaporators for R245fa.http://dx.doi.org/10.1155/2018/9318048 |
| spellingShingle | Meiling Liang Xiaohui Zhang Rong Zhao Xulin Wen Shan Qing Aimin Zhang Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network Complexity |
| title | Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network |
| title_full | Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network |
| title_fullStr | Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network |
| title_full_unstemmed | Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network |
| title_short | Optimization of R245fa Flow Boiling Heat Transfer Prediction inside Horizontal Smooth Tubes Based on the GRNN Neural Network |
| title_sort | optimization of r245fa flow boiling heat transfer prediction inside horizontal smooth tubes based on the grnn neural network |
| url | http://dx.doi.org/10.1155/2018/9318048 |
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