Extraterrestrial Solar Irradiation

Iqbal, M.

doi:10.1016/b978-0-12-373750-2.50009-4

Cited by 185 publications

(192 citation statements)

References 2 publications

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“…Based on the month and day of the year, the number of days n elapsed until the day and time of measurement made by the pyranometer was determined, using the formulas provided in Table 2. First, the given declination in degrees equation ( 1) was calculated (Duffie & Beckman, 1991;Iqbal, 1983) Here the number of days n for each type of month day of the year was determined from Table 2.…”

Section: Clear Index Determination Proceduresmentioning

confidence: 99%

“…Knowing the solar constant G sc and the latitude ϕ for the location of each station, the hour angle ω s was determined by the equation ( 2) (Belúcio, et al, 2014;Duffie & Beckman, 1991;Iqbal, 1983;Kumar, 2016) For Vianello and Alves, 1991, considering the chronological time variable H, which varies from 0 to 24 hours (in degrees), the hour angle w s , in the morning and ws<0; at noon w s =0 and in the afternoon ws>0, such that, after calculating the hour angle, taking into account the time (local time converted to solar). Having first, treating the measurement hour with a time interval of 1 (one) and 10 (ten) minutes, that is, minute by minute, then transforming the hour angle into degrees, a worse result was obtained equation ( 3).…”

Section: Clear Index Determination Proceduresmentioning

confidence: 99%

“…( 3) The difference in minutes between solar time and standard time is (Duffie & Beckman, 1991;Iqbal, 1983;Mucomole et al, 2021).…”

Section: Clear Index Determination Proceduresmentioning

confidence: 99%

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Temporal Variability of Solar Energy Availability in the Conditions of the Southern Region of Mozambique

Mucomole

Silva

Magaia

2023

Am. J. Energy Nat. Resour.

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The use of photovoltaic solar energy is affected by variations in the availability of solar radiation, which creates stability in solar panels. In our case, the need arose to study the temporal variability of solar energy in the southern region of Mozambique. This was followed by a descriptive sequence, applying the analytical method for the classification of days and the analysis of the day’s variability of clear, cloudy and intermediate skies in the data from three regional stations. The results show that it was mostly on clear sky days (44.64%), enhancing the use of solar energy. Statistical analysis of the frequency density variability shows that days with intermediate skies have a similar behavior, however they present a smooth decrease, because for variation of clear sky index ∆Kt* in the interval [-2,2] it is higher. The values of Kt* vary between 0.3342–1.2764, the minimum is observed in the month of July and the maximum in December and the variations during the daily course of the Kt* determined according to its standard deviation show such suitability to the model adopted for the calculation of global irradiation under the clear sky, as an appropriate choice of time interval and amplitude for the study of variations.

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Section: Clear Index Determination Proceduresmentioning

confidence: 99%

Section: Clear Index Determination Proceduresmentioning

confidence: 99%

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Temporal Variability of Solar Energy Availability in the Conditions of the Southern Region of Mozambique

Mucomole

Silva

Magaia

2023

Am. J. Energy Nat. Resour.

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“…where Eb = direct radiation intensity (measured perpendicular to the sun) Ed = diffuse radiation intensity value (measured on a horizontal surface) E0 = Extraterrestrial Orthogonal Intensity [6] m = air mass [7] , b d τ τ = Beam and diffuse optical depths, which depend on the terrain of the area and vary during the year and an average can be obtained from ASHRAE RP-1453 [8].…”

Section: Clear-sky Solar Radiationmentioning

confidence: 99%

A Novel Method Using Two-stage Anaerobic Digestion Integrated with Greenhouse Solar Dryer for Increased Biogas Production

Sudsuansee

Khanthirat

Lawong

et al. 2023

Curr. Appl. Sci. Technol.

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Solar energy is infinite and environmental-friendly energy that is widely used in many fields such as solar cells, solar roofs, solar dryers and so on. However, solar energy has never been used in anaerobic digestion processes for biogas production. The use of solar energy may accelerate the biogas reaction to achieve higher gas production rates. Hence, the purpose of this research was to study a two-stage anaerobic digestion system in combination with a greenhouse solar dryer to increase the rate of biogas production. The study consisted of two parts: the first was to study the temperature variations in greenhouse solar dryers using computational fluid dynamic techniques, and the second was to conduct two-stage anaerobic digestion integrated with the greenhouse solar dryer system for biogas production. The results showed that the average temperature and biogas production rate in the integrated two-stage anaerobic digestion system compared to a conventional system increased by 16.2% and 19.69 %, respectively

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“…When the measurement of solar radiation is unavailable, the theoretical radiations can be assumed according to the location and configurations of the bridge following the clear-sky model presented by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE, 2021) or similar variants (Chow et al, 2005;Iqbal, 2012;Sousa Tomé et al, 2018).…”

mentioning

confidence: 99%

Thermal behaviors of bridges — A literature review

Chen

Zhou

et al. 2023

Advances in Structural Engineering

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This work provides a comprehensive review of previous studies concerning the static thermal behaviors of various types of bridges, including beam bridges, arch bridges, cable-stayed, and suspension bridges. Given that thermal behaviors are closely associated with the temperature distribution of bridges, the basis of the heat transfer analysis is briefly introduced first. The studies of the temperature distribution and the temperature actions of each type of bridge are then reviewed from the perspective of theoretical analysis, numerical simulation, experimental tests, and field monitoring. Finally, some existing problems are discussed, and future research topics are recommended.

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Extraterrestrial Solar Irradiation

Cited by 185 publications

References 2 publications

Temporal Variability of Solar Energy Availability in the Conditions of the Southern Region of Mozambique

Temporal Variability of Solar Energy Availability in the Conditions of the Southern Region of Mozambique

A Novel Method Using Two-stage Anaerobic Digestion Integrated with Greenhouse Solar Dryer for Increased Biogas Production

Thermal behaviors of bridges — A literature review

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