The efficiency of different orientations of photovoltaic systems

Abstract

This paper compares the efficiency of different orientations of photovoltaic systems under outdoor conditions over the five-year period in Slovenia. The four different photovoltaic systems were analysed with the same mono-crystalline silicon solar modules. The impact of orientation and inclination on efficiency are evaluated. The analysis of the data obtained shows that the efficiency of the photovoltaic systems depends on the solar irradiation and temperature of solar modules. Based on the analysis and measurements for different photovoltaic systems, the optimal orientation and inclination are presented. Streszczenie. W artykule porównano wydajność systemów fotowoltaicznych o różnej orientacji w warunkach pracy zewnętrznej podczas pięcioletniej ich aktywności na terenie Słowenii. Badano cztery różne systemy fotowoltaiczne z tym samym monokrystalicznym modułem krzemowym. Wpływ orientacji i odchylenia na wydajność tych systemów zostały poddane ewaluacji. Analiza otrzymanych danych pokazuje, że wydajność systemów fotowoltaicznych zależy od promieniowania słonecznego i temperatury modułów. Bazując na analizie i pomiarach czterech systemów fotowoltaicznych wyznaczono optymalną orientację i odchylenie. (Wydajność systemów fotowoltaicznych w różnych ukierunkowaniach

Optimizing Solar Power Generation in Urban Industrial Blocks: The Impact of Block Typology and PV Material Performance

“…Usually, manufacturers of PV devices stated the value of the power temperature coefficient for PV modules on the labels of PV products, which usually ranged from 0.3 to 0.5%/ • C. This meant that for every 10 • C increase in temperature, the PV module temperature would be reduced to 0.5%/ • C, which was the same as that of the PV module. That meant that for every 10 • C increase in temperature, the efficiency of PV modules decreased by 3 to 5% [44]. Moreover, the variability in materials among different PV panels leads to their varying responses to environmental factors [45,46].…”

Performance and Empirical Analysis of Photovoltaic Modules Made of Different Technologies Using Capacity Evaluation Method

“…These papers conducted an analysis of the PV performance based on one-year or longer measurements. In [4]- [11], performance analysis of different PV technologies based on one-year measurements is done, while in [12][13][14][15][16][17][18][19][20][21][22] analysis is conducted based on over one year of measurements. All these papers use long-term energy evaluation method for analysis described either in withdrawn IEC 61724:1998 standard or new IEC TS 61724-3:2016 standard, depending on the year of publication.…”