Volume 66

Performance Analysis of a PV–Solar Collector Hybrid System with Integrated Thermal and Electrical Energy Storage Xin Jin, Natasa Nord

Abstract

This study presents the development and experimental evaluation of a hybrid heating system with integrated electrical and thermal energy storage for domestic hot water production. In this study, the experimental system combined a solar heat collector to generate thermal energy and a photovoltaic (PV) panel to produce electricity. During periods of solar availability, the thermal energy was stored in a water tank, while the electricity was stored in a battery. A heat pump, powered primarily by the PV-charged battery, was used to heat the water to the desired set point after the initial solar heating phase. Experimental results demonstrated that the integrated system significantly reduced grid electricity use and achieved a high system efficiency of around 2.86. Furthermore, the incorporation of the PV-battery subsystem reduced grid power by approximately 23.9%, and the hybrid solar heating system achieved 66.4% electricity savings compared to a conventional electrical heater. This work confirmed the technical feasibility of hybrid solar heating systems in enhancing energy efficiency and promoting renewable energy utilization for residential hot water requirements.

Keywords renewable energy, thermal energy storage, battery, energy performance, technical feasibility