The Impact of a CPVT Polygeneration System on a Home's Energy Bill and Budget

Document Type : Original Article

Author

Department of Industry and Energy, Science and Research Branch, Islamic Azad University, Tehran, Iran

Abstract

The purpose of this research is to investigate the impact, both financially and in terms of energy consumption, of installing a solar-powered photovoltaic thermal concentration (CPVT) system in a residence in Tehran, Iran, so that the homeowner may have access to hot water and air conditioning. Triple-junction solar cells and linear Fresnel concentrators (also known as LFCs) are used in the CPVT system. A water ammonium absorption chiller with a capacity of 5 kilowatts is used so that sun thermal energy may be used to generate cooling electricity. The EES is used to combine the simulation models for both the absorption chiller and the LFC. In the event that solar energy is not adequate, other heaters are now being investigation. In the case that there is an oversupply of solar electricity, the solution that has been proposed makes use of thermal energy storage (TES) tanks. In this configuration, we investigate the possibility of using both conventional photovoltaic cells and concentrated thermal collectors. Furthermore, we investigate the possibility of employing photovoltaic tandem technology (PVT) with both triple-junction and conventional solar cells. Transient simulations of these kinds of systems may be carried out with the help of TRNSYSY. The system that is being suggested produces 5.58 MWh of power, which is enough to satisfy 48% of the building's requirements for energy consumption. The design that has been presented is the one that will save the most money out of the three possible solar systems. The levelized cost of energy is $0.018 USD per kilowatt-hour (kWh), and the benefit-to-cost ratio is 159%. These numbers may be found in the table below. Even though the initial expenditure for a parallel arrangement of two CPVT is only 42% more, the return on investment (ROI) is just 1% worse than it would be otherwise. The very low cost of energy provided by the system is the primary contributor to the payback period's length of 7.8 years.

Keywords

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  • Receive Date: 06 February 2023
  • Revise Date: 19 February 2023
  • Accept Date: 21 February 2023