Thermodynamic and Economic Assessment on the Supercritical Compressed Carbon Dioxide Energy Storage System coupled with Solar Thermal Storage

Performance study of a supercritical CO2 Brayton cycle coupled with a compressed CO2 energy storage system for waste heat recovery of ship gas turbines under variable load conditions

“…26 (6) The time and work medium mass ow rate of the energy storage and energy release processes are the same. 23 (7) The process is isenthalpic before and aer throttling. 33…”

“…Table 1 Heat transfer coefficient correlation equation for the heat exchanger 23,47 Heat transfer correlation Reynolds number region…”

“…where C p,oil indicates the specic heat capacity of thermal oil, and the value is 2100 J (kg −1 K −1 ). Since the entropy value of thermal oil is not easily obtained, the logarithmic average of the hot and cold uid temperatures of the heat exchanger is used to calculate the exergy destruction of HRHE2 and HE, 23 dened as follows:…”

“…Basic thermodynamic design parameters of the CC-CCES system23,42,55 Fuels cycle, and the mass ow rate of supercritical CO 2 that needs to be cooled increases greatly. Sub-cycle T-CO 2 obtains more thermal energy from the evaporator, which leads to the increase of _ m T-CO 2 with the same heat transfer temperature difference.…”

Carbon dots conjugated nanocomposite for the enhanced electrochemical performance of supercapacitor electrodes

“…Global climate change caused by the excessive burning of fossil fuels has worsened and become an urgent problem. 1–3 Consequently, researchers seek new forms of renewable energy to reduce carbon dioxide emissions and enable the transition to clean and eco-friendly energy sources. 4,5 Such technologies also help to control and reduce the cost of electricity, improve the consistency and flexibility of electrical systems, replace aging power infrastructure, and provide consistent power to remote areas.…”