Thermodynamic Investigation of Combined Cycles And Polygeneration Systems With An Emphasis On Supercritical Carbon Dioxide Power Cycles

Abstract

Because of the tremendous growth in global population and economic activity, as well as growing environmental concerns, efficient energy use will be critical in creating the future energy landscape. Reduced waste heat generation is an important step toward future waste heat usage success. The purpose was to investigate numerous thermodynamic systems and model a new one that uses sCO2 cycles, as well as other possible combinations, to successfully and efficiently recover waste heat for electricity production, cooling effect or heating. An integrated CCHP (cooling, heating, and power) strategy is developed recognizing the energy cascade efficiency for low/medium-grade heat waste, which merges multiple cycles, a sCO2 cycle and an Organic Rankine cycle (ORC) and an Absorption refrigeration cycle (ARC), and the topping cycle of a gas turbine cycle. Under working conditions, the energy utilization factor increases by 4.5 percent, according to the data. Using parametric analysis, the impact of design elements on the main performance parameters of the suggested system is studied. The consequences of the system's main parameters were graphically depicted. The goal is to research several systems and construct a modern one that uses sCO2 cycles, as well as other conceivable combinations, to effectively and reliably recover waste heat.