Performance Studies and Energy-Saving Analysis of a Solar Water-Heating System
Abstract
:1. Introduction
2. Solar Hot-Water System
3. System Test and Evaluation Index
4. Results and Discussion
4.1. Influence of Ambient Temperature on the Performance of the Collector
4.2. Influence of Irradiance on Collector Performance
4.3. Analysis of Daily Operation Performance of the Hot-Water System
4.4. Annual Performance Analysis of the Hot-Water System
4.5. Analysis of Energy and Emission Reduction of the Hot-Water System
4.6. Performance Analysis of the Solar Hot-Water System
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Date | Ta/°C | H/W·m2 | Q/MJ | Qp/MJ | Qr/MJ | Vf/m3 | VW/m3 | η/% |
---|---|---|---|---|---|---|---|---|
9 January 2015 | 6.30 | 607.00 | 22.88 | 464.4 | 222.62 | 1.56 | 1.95 | 22.03 |
27 January 2015 | 0.10 | 662.60 | 39.91 | 320.04 | 129.60 | 1.15 | 1.10 | 20.66 |
31 January 2015 | 2.50 | 648.70 | 78.38 | 66.52 | 34.75 | 0.29 | 0.43 | 20.76 |
3 February 2015 | 5.70 | 425.00 | 106.10 | 0 | 18.73 | 0 | 0.31 | 24.33 |
5 February 2015 | 5.80 | 634.90 | 160.08 | 0 | 4.59 | 0.56 | 0.044 | 24.69 |
21 March 2015 | 17.20 | 756.90 | 329.78 | 0 | 219.93 | 2.17 | 2.83 | 34.40 |
24 March 2015 | 13.60 | 689.30 | 257.57 | 63.84 | 65.59 | 0.62 | 0.50 | 30.99 |
25 March 2015 | 14.90 | 545.10 | 205.37 | 0 | 139.52 | 1.02 | 1.11 | 33.16 |
7 April 2015 | 12.20 | 776.80 | 386.28 | 0 | 136.41 | 1.18 | 1.10 | 37.15 |
14 April 2015 | 22.70 | 710.70 | 473.56 | 0 | 125.21 | 2.35 | 0.93 | 46.01 |
25 April 2015 | 28.80 | 636.30 | 439.74 | 0 | 58.96 | 1.09 | 0.50 | 49.95 |
20 May 2015 | 29.00 | 688.00 | 425.59 | 0 | 133.62 | 0.84 | 0.87 | 44.95 |
25 May 2015 | 31.30 | 577.30 | 374.36 | 0 | 183.66 | 1.35 | 1.25 | 46.06 |
14 June 2015 | 32.50 | 641.50 | 190.49 | 0 | 0 | 0 | 0 | 56.63 |
15 June 2015 | 29.50 | 384.20 | 261.64 | 0 | 158.94 | 1.31 | 1.14 | 47.53 |
16 June 2015 | 31.50 | 472.60 | 349.43 | 0 | 43.99 | 0.33 | 0.39 | 48.33 |
6 July 2015 | 29.90 | 534.00 | 308.68 | 0 | 97.03 | 0.86 | 0.64 | 49.87 |
13 July 2015 | 38.50 | 618.90 | 271.03 | 0 | 85.53 | 0.57 | 0.51 | 50.83 |
5 August 2015 | 31.50 | 457.20 | 287.92 | 0 | 23.16 | 0.34 | 0.20 | 42.12 |
9 August 2015 | 33.10 | 548.40 | 258.01 | 0 | 0 | 0.11 | 0 | 42.20 |
2 September 2015 | 30.70 | 682.20 | 428.31 | 0 | 54.04 | 3.17 | 0.69 | 46.15 |
8 September 2015 | 26.90 | 433.30 | 227.46 | 0 | 57.25 | 0.64 | 0.49 | 42.56 |
20 September 2015 | 25.10 | 439.10 | 179.18 | 0 | 0 | 0 | 0 | 35.41 |
2 October 2015 | 25.00 | 718.50 | 325.17 | 0 | 9.37 | 0.32 | 0.10 | 35.27 |
18 October 2015 | 18.50 | 413.60 | 125.87 | 79.74 | 22.84 | 0.59 | 0.26 | 30.81 |
4 December 2015 | 5.80 | 584.90 | 75.91 | 375.48 | 299.45 | 2.27 | 2.67 | 23.19 |
11 December 2015 | 5.90 | 515.40 | 68.72 | 255.36 | 212.10 | 1.59 | 1.69 | 26.33 |
28 December 2015 | 1.50 | 473.60 | 29.91 | 434.19 | 179.26 | 0.86 | 1.27 | 23.12 |
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Han, X.; Li, C.; Ma, H. Performance Studies and Energy-Saving Analysis of a Solar Water-Heating System. Processes 2021, 9, 1536. https://doi.org/10.3390/pr9091536
Han X, Li C, Ma H. Performance Studies and Energy-Saving Analysis of a Solar Water-Heating System. Processes. 2021; 9(9):1536. https://doi.org/10.3390/pr9091536
Chicago/Turabian StyleHan, Xilian, Chao Li, and Hongqiang Ma. 2021. "Performance Studies and Energy-Saving Analysis of a Solar Water-Heating System" Processes 9, no. 9: 1536. https://doi.org/10.3390/pr9091536
APA StyleHan, X., Li, C., & Ma, H. (2021). Performance Studies and Energy-Saving Analysis of a Solar Water-Heating System. Processes, 9(9), 1536. https://doi.org/10.3390/pr9091536