This paper proposed a coupled application of phase change materials (PCMs) and distributed photovoltaic (PV) power generation systems for building energy efficiency. An experimental apparatus for buildings with PCMs and PV systems was constructed. The energy consumption and power generation of the experimental buildings was simulated using EnergyPlus and System Advisor Model (SAM) and verified against experimental data, respectively. The energy consumption was reduced by an average of 0.015 kW per hour and the peak load was delayed by an average of 1 h using PCMs. To realize the highest self-sufficiency rate, an additional 2 kWh battery was required for a reduction of 0.269 kWh air conditioning load. The more the PCMs of the buildings used, the larger the capacity of the battery was needed to be equipped.
Keywords distributed photovoltaic power generation, phase change materials, building energy consumption, battery SOC