Energy assessment based on semi-dynamic modelling of a photovoltaic driven vapour compression chiller using phase change materials for cold energy storage

Solar cooling systems are a promising solution for reducing the electrical consumption of conventional building systems. Among various alternatives, photovoltaic driven vapour compression chillers currently most mature and economically feasible solar technology. This study focuses on semi-dynamic modelling chiller coupled with novel refrigerant-phase change material (PCM)-water heat exchanger (RPW-HEX) which replaces chiller’s evaporator, allowing efficient storage produced energy. A custom-build lumped parameter model was developed in TRNSYS used to assess performance proposed system annual basis. Using as benchmark PV storage, retrofitted hybrid showed improved performance, limiting demand peaks enhancing fraction, especially partial loads. Last, comparison PCM thermal energy batteries carried out, leading enhanced characteristics latter.