Efficiency of solar tree based on golden ratio

Abstract

The efficiency of a solar tree based on golden ratio was investigated and analyzed. The lengths and angles of the trunks, main branches and sub-branches are designed using the golden ratio principle. A trunk is divided into five ranges based on the Fibonacci sequence, consisting of four main branches and four sub-branches. The angle between the trunk and main branches, main branches and the next main branches, main branches and sub-branches, subbranches and the next sub-branches is equal to 137.5° (golden angle). The solar cells are installed at the ends of all branches along the direction of each branch. The power efficiency of the proposed structure and the land-based fixed angle are compared. The measurement system consists of (a) solar cell electricity measurements (voltage and current) and (b) environment measurements (temperature, humidity, and light intensity). The data are recorded through DAQ cards (PCI 628, Elvis board and USB 6008) which are connected to the LabVIEW program for analyzes and monitors. The experimental results show that the power efficiency of the solar tree based on the golden ratio was more than the land-based fixed angle by 1.295 percent and solar cells positioned at the end of branches (T1) of the trunk can generate most power.

Design and Development of a Biomimetic Solar Tree for Sustainable Cogeneration: An Energy and Exergy Assessment

“…Exergy analysis aids in the identification of thermodynamic losses and guides potential measures to mitigate these losses. [24] investigated two approaches, namely the parametric method and the photonic method, for calculating the energy and exergy efficiency of PV systems. The exergy efficiency of a pair of photovoltaic (PV) modules linked in series was assessed for a representative day, yielding a range of values from a minimum of 7.8% to a maximum of 13.8%.…”

“…As mentioned above, the losses decrease electrical output, thereby reducing revenue generated by the power plant. The exergy destruction (CoEx) cost can be calculated using Equation (24). CoEx = electricity cost per unit * exergy destruction (24) The PV module predominantly converts solar energy into electrical and thermal energy.…”

“…The exergy destruction (CoEx) cost can be calculated using Equation (24). CoEx = electricity cost per unit * exergy destruction (24) The PV module predominantly converts solar energy into electrical and thermal energy. Additionally, it should be noted that the efficiency of the photovoltaic (PV) module has an inverse relationship with the ambient temperature.…”

Solar photovoltaic tree multi aspects analysis − a review

“…The researchers from [30] built a solar tree using an angle of 137.5°(golden angle) between branches and between trunk and branches. The authors did not specify in detail the n t /n l pattern to determine this angular distance.…”

“…In the studies from [22][23][24][25][26][27][28][29][30][31][32], solar tracking systems were used to position the photovoltaic panels and ensure that they were exposed to maximum solar radiation.…”