Deadline for manuscript submissions: 31 August 2024.
Solar energy technology uses solar radiation/energy to generate electricity or heat. Solar energy is a renewable and sustainable energy source, which has gained significant attention in recent years due to its potential to mitigate climate change and reduce reliance on fossil fuels. Therefore, the exploitation of solar radiation has led to the development of a subsequent (solar energy) technology, which is expressed into two types: photovoltaic (PV) and solar thermal.
The PV technology involves the use of solar cells to directly convert solar energy into electricity. These cells are typically made from semiconductor materials like silicon. PV systems can be installed on rooftops, solar farms, and even integrated into various structures like windows and facades.The literature documents the economic and environmental evaluations of conventional phase change materials (PCMs), such as paraffin wax, used in photovoltaic-thermal (PV-T) systems. Nonetheless, there is limited evidence of bio-based PCM applications within PV-T systems. This study investigates the economic and environmental aspects of employing shea butter as a bio-based PCM in a PV-T setup. The photovoltaic-thermal system integrated with shea butter was designed using the Transient Simulation System (TRNSYS). The shea butter system showed superior economic performance, with a levelized cost of energy (LCOE) of US$0.131/kWh, compared with US$0.146/kWh for the paraffin wax system. Its energy costs were also lower than those of the grid and diesel generation in Nigeria. However, the payback period was longer than that of traditional PV systems. Environmentally, shea butter has a global warming potential (GWP) of 0.615 kg CO2e, significantly lower than that of paraffin wax (3.75 kg CO2e).