A review of advancements in solar PV-powered refrigeration: Enhancing efficiency, sustainability, and operational optimization
Gourab Saha, AKM Abdul Malek Azad
Abstract
The combination of refrigeration systems and solar photovoltaic (PV) technology has become a viable alternative to tackle the difficulties caused by electricity limitations, especially in areas with restricted grid connectivity. This review article compiles many studies that aim to improve the efficiency, coefficient of performance (COP), and decrease the power consumption of solar PV-powered refrigeration systems. A thorough investigation is conducted to examine several factors, such as the choice of appropriate refrigerants, compressor architecture, and the incorporation of phase change materials (PCMs). By analyzing vapor compression refrigeration systems (VCRS), the review highlights how different compressor types (e.g., reciprocating, rotary, and linear compressors) affect the COP and energy consumption. The properties and performance of various refrigerants are compared to identify the most efficient and environmentally friendly options. The application of PCM is explored, detailing its impact on maintaining optimal PV panel temperatures and improving overall system efficiency. In addition, several control strategies and suitable optimizers are covered to guarantee the best possible performance of the system. The results highlight the usage of solar PV technology to fulfill cooling requirements, thus providing a sustainable and financially feasible alternative in off-grid and remote areas. Moreover, the knowledge obtained from this study is expected to direct future research efforts toward creating PV-based solar refrigeration systems that are more effective, environmentally friendly, and operationally optimized.