measurement and comparison of solar radiation estimation models ...

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4.12. New Developed Equation 3 Third order quadratic correlation of Group-4 has been obtained for monthly- average daily global solar radiation. It was as follows: H = Hₒ [0.371 + 0.297 S S − 0.575 Sₒ Sₒ + 0.932 S Sₒ ] (4.14) 23
CHAPTER 5 ANALYSIS OF DIFFUSE RADIATION MODELS Hourly global radiation on horizontal surfaces is available for many stations, but relatively few stations measure the hourly diffuse radiation. In this section, 8 models have been reviewed and 4 new models were estimated to establish the monthly- average diffuse radiation. They were grouped and examined not like in the past chapter, but according to type of the equation expressed the monthly average daily diffuse solar radiation as a function of measured sunshine duration, measured global solar radiation and extraterrestrial solar radiation. 5.1. 퐇 퐝 as a Function of H and the Clearness Index (Group 1) 5.1.1. Tasdemiroglu and Sever’s Model The model was prepared for Turkey in general. The equation is: H = H 1.6932 − 8.2262 H H + 25.5532 Hₒ Hₒ − 37.807 H Hₒ + 19.8178 H Hₒ 5.1.2. Tiris et al. Model (5.1.1) An analysis of monthly average daily diffuse solar radiation in Gebze, Turkey was presented as follows: H = H 0.583 + 0.9985 H H − 5.24 Hₒ Hₒ + 5.322 H Hₒ (5.1.2) 24
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: The equation was in the Group 2. H
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 and 52: 2000 1800 1600 1400 1200 1000 800 6
Page 53 and 54: The following main results were obt
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

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