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Abstract
In this paper, hourly terrestrial radiation: direct beam, diffuse and global solar radiation are modelled and calculated based on daily measured data for a horizontal surface. In addition, the same parameters were modelled for inclined surfaces. Most of the parameters modelled in this work represent a part of the input data required by building thermal simulation and solar energy systems software. Important trends of the solar radiation on tilted surfaces as a function of time and direction are being presented and discussed. The comparison of some of the results with measured data from other sources shows good agreement. The effect of tilt angle and orientation on the incident solar radiation fluxes arepresented along with optimum surface tilt angles and directions for maximum solar radiation collection in Muscat area. The results presented in this paper are quite useful for quick estimation of solar radiation for calculations of cooling load and solar collector performance. Also, the models and the computer code developed in this work form the backbone of any computer-aided building thermal design and solar systems design calculations.
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References
- Al-Hinai AH, Al-Alawi SM (1995), Typical solar radiation data for Oman. Applied Energy 52:153- 163
- ASHRAE handbook (1999), HVAC applications, Atlanta (GA): ASHRAE.
- Collares-Pereira M, Rabl A (1979), The average distribution of solar radiation - correlations between diffuse and hemispherical and between daily and hourly insolation values. Solar Energy 22:155- 164.
- Duffie JA, Beckman WA (1980), Solar engineering of thermal processes. John Wiley, New York.
- Gueymard C (1993), Critical analysis and performance assessment of clear-sky solar irradiance models using Theoretical and Measured Data. Solar Energy 51(2):121-138.
- Iqbal M (1978), Estimation of the monthly average of the diffuse component of total insolation on a horizontal surface. Solar Energy 20(1):101-105.
- Kasten A (1966), A new table and approximate formula for relative optical air mass. Arch. Meteorol Geophys. Bioklimatol Ser. B 14:206-223.
- Lam JC, Li DHW (1996), Correlation between global solar radiation and its direct and diffuse components. Building and Environment 31(6):527-535.
- Liu BYH, Jordan RC (1962), Daily insolation on surfaces tilted towards the equator. Trans ASHRAE 67:526-541.
- Mellit A, Eleuch H, Benghanem M, Elaoun C, Massi Pavan A (2010), An adaptive model for predicting of global, direct and diffuse hourly solar irradiance. Energy Conversion and Management 51:771-782.
- Nijmeh S, Mamlook R (2000), Testing of two models for computing global solar radiation on tilted surfaces. Renewable Energy 20(1):75-81.
- Noorian AM, Moradi M, Kamali GA (2008), Evaluation of 12 models to estimate hourly diffuse irradiation on inclined surfaces. Renewable energy 33(6):1406-1412.
- Notton G, Muselli M, Louche A (1996), Two estimation methods for monthly mean hourly total irradiation on tilted surfaces from monthly mean daily horizontal irradiation from solar radiation data of ajaccio, corsica. Solar Energy 57(2):141-153.
- Padovan A, Del Col D (2010), Measurement and modeling of solar irradiance components on horizontal and tilted planes. Solar Energy 84:2068- 2084.
- Perez R, Ineichen P, Seals R, Michalsky J, Stewart R (1990), Modelling daylight availability and irradiance components from direct and global irradiance. Solar Energy 44:271-289.
- Tymvios FS, Jacovides CP, Michaelides SC, Scouteli C (2005), Comparative study of angstrom's and artificial neural networks methodologies in estimating global solar radiation. Solar Energy 78:752-762.
- Ulgen K, Hepbasli A (2009), Diffuse solar radiation estimation models for turkey's big cities. Energy Conversion and Management 50:149-156.
- Zervas PL, Sarimveis H, Palyvos JA, Markatos NCG (2008), Prediction of daily global solar irradiance on horizontal surfaces based on neural-network techniques. Renewable Energy 33:1796-1803.
- Zurigat YH, Sawaqed N, Al-Hinai H, Jubran B (2003), Development of typical meteorological years for different climatic regions in Oman, Final Report, Petroleum Development Oman.
References
Al-Hinai AH, Al-Alawi SM (1995), Typical solar radiation data for Oman. Applied Energy 52:153- 163
ASHRAE handbook (1999), HVAC applications, Atlanta (GA): ASHRAE.
Collares-Pereira M, Rabl A (1979), The average distribution of solar radiation - correlations between diffuse and hemispherical and between daily and hourly insolation values. Solar Energy 22:155- 164.
Duffie JA, Beckman WA (1980), Solar engineering of thermal processes. John Wiley, New York.
Gueymard C (1993), Critical analysis and performance assessment of clear-sky solar irradiance models using Theoretical and Measured Data. Solar Energy 51(2):121-138.
Iqbal M (1978), Estimation of the monthly average of the diffuse component of total insolation on a horizontal surface. Solar Energy 20(1):101-105.
Kasten A (1966), A new table and approximate formula for relative optical air mass. Arch. Meteorol Geophys. Bioklimatol Ser. B 14:206-223.
Lam JC, Li DHW (1996), Correlation between global solar radiation and its direct and diffuse components. Building and Environment 31(6):527-535.
Liu BYH, Jordan RC (1962), Daily insolation on surfaces tilted towards the equator. Trans ASHRAE 67:526-541.
Mellit A, Eleuch H, Benghanem M, Elaoun C, Massi Pavan A (2010), An adaptive model for predicting of global, direct and diffuse hourly solar irradiance. Energy Conversion and Management 51:771-782.
Nijmeh S, Mamlook R (2000), Testing of two models for computing global solar radiation on tilted surfaces. Renewable Energy 20(1):75-81.
Noorian AM, Moradi M, Kamali GA (2008), Evaluation of 12 models to estimate hourly diffuse irradiation on inclined surfaces. Renewable energy 33(6):1406-1412.
Notton G, Muselli M, Louche A (1996), Two estimation methods for monthly mean hourly total irradiation on tilted surfaces from monthly mean daily horizontal irradiation from solar radiation data of ajaccio, corsica. Solar Energy 57(2):141-153.
Padovan A, Del Col D (2010), Measurement and modeling of solar irradiance components on horizontal and tilted planes. Solar Energy 84:2068- 2084.
Perez R, Ineichen P, Seals R, Michalsky J, Stewart R (1990), Modelling daylight availability and irradiance components from direct and global irradiance. Solar Energy 44:271-289.
Tymvios FS, Jacovides CP, Michaelides SC, Scouteli C (2005), Comparative study of angstrom's and artificial neural networks methodologies in estimating global solar radiation. Solar Energy 78:752-762.
Ulgen K, Hepbasli A (2009), Diffuse solar radiation estimation models for turkey's big cities. Energy Conversion and Management 50:149-156.
Zervas PL, Sarimveis H, Palyvos JA, Markatos NCG (2008), Prediction of daily global solar irradiance on horizontal surfaces based on neural-network techniques. Renewable Energy 33:1796-1803.
Zurigat YH, Sawaqed N, Al-Hinai H, Jubran B (2003), Development of typical meteorological years for different climatic regions in Oman, Final Report, Petroleum Development Oman.