Thermodynamic Analysis of a Hybrid Trigenerative Compressed Air Energy Storage System with Solar Thermal Energy

Abstract

The comprehensive utilization technology of combined cooling, heating and power (CCHP) systems is the leading edge of renewable and sustainable energy research. In this paper, we propose a novel CCHP system based on a hybrid trigenerative compressed air energy storage system (HT-CAES), which can meet various forms of energy demand. A comprehensive thermodynamic model of the HT-CAES has been carried out, and a thermodynamic performance analysis with energy and exergy methods has been done. Furthermore, a sensitivity analysis and assessment capacity for CHP is investigated by the critical parameters effected on the performance of the HT-CAES. The results indicate that round-trip efficiency, electricity storage efficiency, and exergy efficiency can reach 73%, 53.6%, and 50.6%, respectively. Therefore, the system proposed in this paper has high efficiency and flexibility to jointly supply multiple energy to meet demands, so it has broad prospects in regions with abundant solar energy resource.

Economic Optimization Dispatch Model of a Micro-Network with a Solar-Assisted Compressed Air Energy Storage Hub, with Consideration of Its Operationally Feasible Region

“…To improve the efficiency and economy of the AA-CAES, the design schemes and key parameters for the tri-generation performance of the AA-CAES has been studied in [16]. A novel CCHP system based on a hybrid tri-generative CAES was proposed and an assessment for system cooling-heating and power capacity analyzed in [17]. The authors of [18] proposed the design principles of a smart micro-energy grid which adopts a hybrid CAES to act as a clean energy hub to provide multi-energy for users.…”

“…R g is the gas constant and V as is the volume of the pressured vessel. The formulation of heat storage can be reduced from [17] to:…”

Performance Analysis of a Waste-to-Energy System Integrated with the Steam–Water Cycle and Urea Hydrolysis Process of a Coal-Fired Power Unit

“…Besides the mentioned ways, the efficiency of WTE plants would also be influenced by the mode of production. Many scholars have proved that combined heat and power (CHP) production could enhance power plants' energy efficiency [25,26], while power generation might be the only energy output option under the unavailability of district network heating [27]. In addition, researchers augmented power efficiency by combining the WTE system with other energy systems [20].…”

“…This study develops a deep integration of a 500 t/d WTEU and a 660 MW CFPU based on the steam-water cycle and hydrolysis of urea into ammonia process, according to the existing research on the integration of a waste incineration plant and a coal-fired power plant [31,33]. The performance of this integrated design is evaluated by thermo-dynamic analysis and economic analysis methods, which is described by the previous works [25,34,35]. In the hybrid system, the energy produced by waste incineration is delivered to the CFPU, which dramatically increases the power output of WTE system.…”