Integration of solar latent heat storage towards optimal small-scale combined heat and power generation by Organic Rankine Cycle

摘要: Abstract Thermal energy and distributed electricity demand are continuously increased in areas poorly served by a centralized power grid. In many cases, the deployment of grid is not economically feasible. Small-scale Organic Rankine Cycle (ORC) appears as promising technology that can be operated solar energy, providing combined heat (CHP) generation. Additionally, thermal storage ensure stable continuous operation case scarce availability. This paper evaluates potential application latent to enhance ORC performance at operating temperatures between 80 °C 140 °C, aiming improving efficiency capacity for low-cost non-concentrating solar-thermal collectors. Three scenarios considered. Scenario 1 2 consist reference cases based on system integrated with conventional hot water tank pressurised tank. 3 implements unit phase change material. The simulation was carried out through models developed TRNSYS balance ASPEN performance. results show provide 54% useful collector gains higher narrower temperature range evaporator, increasing annual 19%, reducing losses 66% decreasing investment cost 50% comparison It also allows cycle approximately 18% (from 8.9% 10.5%) net generated than integration, scaled up from 498 W 1628 W. These highlight benefits integration provides improve powering supply.