In this paper, an in-depth analysis of energy matrices namely, capacity utilization factor (CUF), performance ratio (PR), energy payback time (EPBT), electricity production factor (EPF), and life cycle conversion efficiency (LCCE) for rooftop grid-connected solar PV photovoltaic (PV) system is presented within the context of the composite climate of New Delhi, India. The study involves the meticulous calculation of (1) energy consumption in the production of various PV module components and (2) the annual energy generated by the PV modules. To facilitate these calculations, a set of mathematical relations has been reformulated to compute the energy metrics. This comprehensive approach allows for the determination of the embodied energy associated with the PV modules. The embodied energy, coupled with annual energy outputs, forms the basis for evaluating the energy metrics. Notably, the study reveals that for PV modules, CUF attains a commendable value of 0.885, indicating a robust operational performance and average PR is an impressive 0.79. Examining the EPBT for the PV system reveals a figure of 5.68 years. The electricity production factor (EPF) over a 30-year lifespan demonstrates a notable efficiency with a value of 5.27 years, highlighting the sustained performance of the system. Furthermore, the life cycle efficiency (LCCE) over a 30 year lifespan is calculated at an appreciable 0.211. As the LCCE approaches one, it indicates superior energy efficiency, positioning the technology as optimal from an energy perspective.

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Energy Matrices of Rooftop Grid-Connected 40 kWp PV System

  • Anil K. Rai

摘要

In this paper, an in-depth analysis of energy matrices namely, capacity utilization factor (CUF), performance ratio (PR), energy payback time (EPBT), electricity production factor (EPF), and life cycle conversion efficiency (LCCE) for rooftop grid-connected solar PV photovoltaic (PV) system is presented within the context of the composite climate of New Delhi, India. The study involves the meticulous calculation of (1) energy consumption in the production of various PV module components and (2) the annual energy generated by the PV modules. To facilitate these calculations, a set of mathematical relations has been reformulated to compute the energy metrics. This comprehensive approach allows for the determination of the embodied energy associated with the PV modules. The embodied energy, coupled with annual energy outputs, forms the basis for evaluating the energy metrics. Notably, the study reveals that for PV modules, CUF attains a commendable value of 0.885, indicating a robust operational performance and average PR is an impressive 0.79. Examining the EPBT for the PV system reveals a figure of 5.68 years. The electricity production factor (EPF) over a 30-year lifespan demonstrates a notable efficiency with a value of 5.27 years, highlighting the sustained performance of the system. Furthermore, the life cycle efficiency (LCCE) over a 30 year lifespan is calculated at an appreciable 0.211. As the LCCE approaches one, it indicates superior energy efficiency, positioning the technology as optimal from an energy perspective.