Thermodynamic analysis and optimization of an air Brayton cycle for recovering waste heat of blast furnace slag

Study of an Electric Energy Generation System from Exhaust Waste Recovery from an Internal Combustion Engine

“…The Brayton cycles are a mature technology and were considered as the most promising power generation system for near future application of the space station [11]. Much of the required equipment and technology for the Brayton cycle is available and this system has a good potential for multiple starts as well as for achieving required long-time reliability [12]. The Brayton cycle considered as a potential exhaust-gas heatrecovery system has not been fully studied, especially when applied to light-duty automotive engine.…”

Generalized Thermodynamic Optimization for Iron and Steel Production Processes: Theoretical Exploration and Application Cases

“…In 1996, Bejan [35] proposed constructal theory [80][81][82][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97][98] after deeply analyzing the formation of the city street network. He firstly applied constructal theory to the cooling problem of electronic devices [36], and described the constructal law.…”

“…efficiently, a series of thermodynamic optimization researches for utilization of waste heat energy have been carried out based on gas turbine technology. Eighteen kinds of classical thermodynamics and FTT models [80][81][82][83][84][85][86][87], involving simple and complex, closed and open gas turbine power cycles, cogeneration systems and combined cooling heating and power (CCHP) systems, were established. Performance analyses and optimizations of the classical thermodynamic model of simple, gasair, regenerated, regenerative Brayton and inverse Brayton gas turbine power plant, and FTT (endoreversible and irreversible) models of power cycles and cogeneration units (closed gas turbine cycles of regenerated CCHP, intercooled-regenerated combined heat and power (CHP), two-stage intercooled-regenerated-reheated CHP plants, closed simple and regenerated modified Brayton cycle, open gas turbine cycles of simple (see Figure 35) and intercooled, simple CCHP (see Figure 36), regenerated CHP and regenerated CCHP) with constant-and variable-temperature heat reservoirs were implemented by taking the cycle power output, thermal efficiency, power density, total useful energy, useful energy efficiency, exergy output rate, exergy efficiency, profitability and exergoeconomic performance as the optimization objectives, respectively.…”

Optimization and energy integration of heat recovery and power generation system

“…The first strategy focuses on treatment of waste gas carrying out heat recovery as a secondary benefit, such as combustion air preheating, building heating, self-energy saving and power generation [1][2][3][4][5][6]. The second strategy aims to increase the power generation by means of optimized parameters [7][8][9], advanced steam cycle [10][11][12], and efficeint heat recovery equipments [13,14].…”