Cantürk, Zeynep
Outdoor tests of photovoltaic modules are crucial for the market, and technological development. It is vital for manufacturers and researchers to conduct tests not only in the long term but also in different climatic conditions. In this thesis, 12 modules are tested in Middle Anatolia climate conditions for nine years in three different module groups, which are mono-crystalline (Mono-Si-1 & 2 & 3, Bifi-Mono-Si, HIT), polycrystalline (Poly-Si-1 & 2), and thin films (CIS-1 & 2, CIGS-1 & 2, µSi/a-Si). We analyzed the efficiencies of solar PV modules with nine years of data ollected from Middle Anatolia. The most effective module is the Bifi-Mono-Si with 16.47 % as expected and the second effective module is HIT with 14.82 % efficiency. In addition to efficiencies, performance ratios are investigated and Mono-Si-1 has the highest performance ratio on average. Furthermore, we analyzed the weather corrected performance ratio of 5 modules (CIS-1 & 2, µSi/a-Si, HIT, Poly-Si-2) and the HIT module obtains the best corrected performance ratio on average. Finally, we utilized efficiencies and performances ratio values to estimate the egradation rates of solar PV modules. We found the following degradation rates for modules: 0.80 %/year for Mono-Si modules, 1.95%/year for CIS modules, 0.68 %/year for a-Si, 1.42 %/year for Poly-Si, and 1.09 %/year for HIT module. Considering all results, Mono-Si is the best option for long-term usage and development.


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Long term outdoor testing of the PV systems at different climatic conditions or different systems under the same ambient conditions are extremely important in producing policies for the transition to renewables. The present research is the testing of three different PV systems under the same climatic conditions of central Anatolia, after four years of operation. The systems consist of a mono-Si, an a-Si thin film and a CdTe thin film arrays. Different calculation procedures of the input solar irradiation on...
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The estimated solar resources are important for designing renewable energy systems since measured data are not always available. The estimation models have been introduced in several studies. These models are mainly dependent on local meteorological data and need to be assessed for different locations and times. The current study compares the results of Angstrom's model and a neural network (NN) model developed for this study with measured data for four cities in Iran. The time resolution for the estimated ...
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The combination of solar thermal, photovoltaic, and heat pump technologies is a welcome advancement in countries with large solar resources such as Turkey. These systems could have similar efficiencies throughout the year for different locations in Turkey if we adjust the solar storage according to the weather conditions. In this paper, solar heating with a heat pump system for buildings have been designed to achieve different values of the fraction of primary energy saved using Flat Plate Collectors (FPC) ...
Citation Formats
Z. Cantürk, “LONG TERM PERFORMANCE AND DEGRADATION RATES OF PV MODULES IN CENTRAL ANATOLIA,” M.S. - Master of Science, Middle East Technical University, 2021.