Clear Sky Solar Insolation Data for Islamabad

Akhter, P.; Baig, A.; Mufti, A.

doi:10.1080/01425919108941459

Cited by 6 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average solar irradiance was 16.3%, 19.65%, and 10.2% higher for May, June, and July, respectively, compared to January [14]. Table 2 shows a good comparison of clear day horizontal solar irradiance measured in this study and already published data [13] of Islamabad for summer months.…”

Section: Resultssupporting

confidence: 72%

“…Jiang et al [12] performed experiments on three solar cells in a laboratory with sun simulator and test chamber and concluded that output efficiency decreased up to 26% when dust deposition density increased up to 22 g/m 2 . Akhter et al [13] measured the solar radiation data for Islamabad over a year. According to their study, the month of May, June, and July have average 79%, 87%, 60% clear sky days and 12.3, 11.6, and 12.7 sunshine hours per day, respectively, in Islamabad.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Outdoor testing of photovoltaic modules during summer in Taxila, Pakistan

et al. 2016

View full text Add to dashboard Cite

An experimental study has been carried out to measure the performance of commercially available photovoltaic modules during summer months in the climate of Taxila, near the capital of Pakistan. The modules used in the study are monocrystalline silicon, polycrystalline silicon, and single junction amorphous silicon. The analysis has been focused on the measurement of module efficiency, performance ratio and temperature of each module at actual operating conditions using outdoor monitoring facility. The measured results are compared with the already published data of peak winter month at the same site. Overall, the monocrystalline module showed high average module efficiency while amorphous silicon module was better in term of average performance ratio. Furthermore, the module efficiency and performance ratio has shown decreasing trend with increase of module temperature. It was found that modules have much higher temperature in summer months (about 20°C higher) and showed low efficiency and performance ratio than peak winter month. The average ambient temperature varied from 18.1--38.6°C from winter to summer.

show abstract

Section: Resultssupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Outdoor testing of photovoltaic modules during summer in Taxila, Pakistan

et al. 2016

View full text Add to dashboard Cite

show abstract

“…This is also clear from Figure 6, where a-Si shows better normalized output power efficiency at low solar irradiance which becomes less than crystalline silicon modules at high solar irradiance. Table 2 shows a good comparison of average horizontal GSR of clear sky days measured in this study and already published data [28] of Islamabad for the months of January, February, and March.…”

Section: Resultssupporting

confidence: 52%

Comparison of Performance Measurements of Photovoltaic Modules during Winter Months in Taxila, Pakistan

Bashir

Ali

Khalil

et al. 2014

International Journal of Photoenergy

View full text Add to dashboard Cite

This paper presents the comparative performance evaluation of three commercially available photovoltaic modules (monocrystalline, polycrystalline, and single junction amorphous silicon) in Taxila, Pakistan. The experimentation was carried out at outdoor conditions for winter months. Power output, module efficiency, and performance ratio were calculated for each module and the effect of module temperature and solar irradiance on these parameters was investigated. Module parameters showed strong dependence on the solar irradiance and module temperature. Monocrystalline and polycrystalline modules showed better performance in high irradiance condition whereas it decreased suddenly with decrease in irradiance. Amorphous solar module also showed good performance in low irradiance due to its better light absorbing characteristics and thus showed higher average performance ratio. Monocrystalline photovoltaic module showed higher monthly average module efficiency and was found to be more efficient at this site. Module efficiency and performance ratio showed a decreasing trend with increase of irradiance and photovoltaic module back surface temperature.

show abstract