measurement and comparison of solar radiation estimation models ...

More documents

Recommendations

Info

41 Table 14. The monthly-average daily diffuse solar radiation for models Months Models January February March April May June July August September October November December 5.1.1 1077.52 1416.90 1854.71 2126.50 2349.99 2158.94 2139.66 2001.51 1832.35 1493.27 1155.95 979.66 5.1.2 1009.07 1219.95 1780.64 2546.17 3005.70 3812.44 3625.98 3107.89 2236.07 1537.81 1055.03 835.17 5.1.3 530.03 923.01 882.47 1166.81 1460.83 2763.78 2494.10 1909.60 1040.08 693.35 599.19 684.49 5.2.1 1173.36 1188.45 1507.90 2259.80 2197.68 2188.57 1707.82 1709.89 1347.97 1055.56 951.64 855.58 5.2.2 1008.48 1009.44 1260.21 1899.82 1818.79 1789.32 1373.42 1388.19 1096.61 866.20 800.41 730.74 5.2.3 993.39 907.73 1088.00 1641.09 1640.63 1861.65 2051.02 1643.35 1245.50 853.72 691.95 682.46 5.3.1 975.70 1207.88 1708.21 2252.86 2589.32 2845.80 2759.96 2462.59 1963.50 1440.43 1028.11 829.04 5.3.2 970.59 1311.27 1666.71 1906.33 2106.55 1888.99 1884.43 1780.12 1642.73 1338.24 1045.34 915.36 5.3.3 879.78 1356.25 1472.14 1437.08 1532.40 1184.74 1203.02 1180.78 1225.32 1112.65 977.11 973.77 5.4.1 621.99 756.90 913.02 1178.07 1216.56 1179.46 1021.13 990.24 832.72 672.44 583.42 543.27 5.4.2 1012.48 1293.61 1648.77 2089.19 2249.18 2213.77 1879.86 1856.87 1563.34 1258.83 1033.09 908.14 5.4.3 1056.11 1168.58 1272.35 1697.33 1624.37 1531.48 1356.24 1285.18 1079.44 877.63 842.90 875.24
The following main results were obtained from the evaluation of the values presented in Table 15: Evaluation of Group 1: The best results for MBE = 35.918 W/h, t-stat=0.179 and e=2.929 were obtained from the new model Eq. 5.1.3, while best result for RMSE = 557.806 W/h was calculated from the Eq. 5.1.1. Evaluation of Group 2: The best results for MBE = 27.077 W/h, RMSE = 286.456 W/h, t-stat=0.315 and e=2.208 were obtained from Eq. 5.2.2. The new developed model’s values are also very close to the best results. Evaluation of Group3: The best results for MBE = -15.140 W/h, RMSE = 305.507 W/h, t-stat=0.165 and e=-1.234 were obtained from the new model (Eq. 5.3.3). Evaluation of Group 4: The best results for MBE = -4.156 W/h, RMSE = 289.548 W/h, t-stat=0.048 and e=-0.339 were obtained from the new developed (Eq. 5.4.3). Among the diffuse solar radiation models, for MSE, t-stat and e methods, the author’s model given by Eq. (5.4.3) was found to be the most accurate model. For RMSE, Eq. (5.2.2) gave the best results. They were followed by Eq. (5.3.3) and Eq. (5.2.3) respectively. Table 15. Comparison of statistical methods for diffuse solar radiation Method MBE ( W/m²) RMSE ( W/m²) t-stat Model e% 5.1.1 489.186 557.806 6.053 39.888 5.1.2 921.266 1232.486 3.732 75.120 5.1.3 35.918 665.798 0.179 2.929 5.2.1 285.625 430.587 2.940 23.290 5.2.2 27.077 286.456 0.315 2.208 5.2.3 48.648 378.915 0.429 3.967 5.3.1 612.223 794.646 4.008 49.921 5.3.2 311.663 395.166 4.255 25.413 5.3.3 -15.140 305.507 0.165 -1.234 5.4.1 -350.626 437.246 4.451 -28.590 5.4.2 357.533 458.881 4.122 29.153 5.4.3 -4.156 289.548 0.048 -0.339 42
Page 1 and 2: MEASUREMENT AND COMPARISON OF SOLAR
Page 3 and 4: ACKNOWLEDGEMENTS First of all, the
Page 5 and 6: ÖZET İZMİR/TÜRKİYE İÇİN GÜ
Page 7 and 8: 4.8. Ulgen and Hepbasli’s Model
Page 9 and 10: Table LIST OF TABLES Table 1. Turke
Page 11 and 12: DMI EIEI IYTE MBE RMSE e t-stat MPE
Page 13 and 14: development. Globally, an estimated
Page 15 and 16: eceived directly (direct radiation)
Page 17 and 18: According to these data, Turkey's a
Page 19 and 20: 2.1. Global Solar Radiation CHAPTER
Page 21 and 22: Electrical Works Research Directora
Page 23 and 24: Togrul et al. (2002) developed some
Page 25 and 26: so widely throughout China that the
Page 27 and 28: Figure 2. Approximate construction
Page 29 and 30: Meteorological data including tempe
Page 31 and 32: CHAPTER 4 ANALYSIS OF GLOBAL RADIAT
Page 33 and 34: The equation was in the Group 2. H
Page 35 and 36: CHAPTER 5 ANALYSIS OF DIFFUSE RADIA
Page 37 and 38: 5.3. 퐇 퐝 as a Function of 퐇
Page 39 and 40: CHAPTER 6 RESULTS 6.1. Results for
Page 41 and 42: Table 5. Hₒ values for Izmir Mont
Page 43 and 44: 1000 900 800 700 600 500 400 300 20
Page 45 and 46: According to Table 9 the maximum va
Page 47 and 48: 36 Table 10. Hourly average global
Page 49 and 50: Evaluation of Group 1: There is onl
Page 51: 2000 1800 1600 1400 1200 1000 800 6
Page 55 and 56: CHAPTER 7 CONCLUSION In this thesis
Page 57 and 58: Haydar A.; Balli O.; Hepbasli A. (2
Page 59 and 60: Yildiz, M. and Oz, S. (1994), Evalu
Page 61 and 62: 700 600 500 400 300 200 100 0 900 8
Page 63 and 64: 800 700 600 500 400 300 200 100 0 6

measurement and comparison of solar radiation estimation models ...

Create successful ePaper yourself

Delete template?

Save as template?