Thermoeconomic analysis for hybrid solar Brayton cycles operating with different working fluids

被引：0
|
作者：
Moreno-Gamboa F. [1 ]
Nieto-Londoño C. [2 ]
Sanin-Villa D. [3 ]
机构：
[1] Engineering School, Fluid and Thermal Team, Francisco de Paula Santander University, Cucuta
[2] Escuela de Ingenierías, Universidad Pontificia Bolivariana, Medellin
[3] Engineering School, Automation, Electronics, and Information Technology, Instituto Tecnológico Metropolitano, Medellin
来源：
International Journal of Thermofluids | 2024年 / 22卷
关键词：
Energy; Exergy; Hybrid Brayton cycle; Power plant; Solar power plant;
D O I：
10.1016/j.ijft.2024.100693
中图分类号：
学科分类号：
摘要：
A Brayton cycle analysis with regeneration fed by heat input from a central concentration solar energy tower and a combustion chamber that uses natural gas is presented. The thermodynamic model includes the irreversibility of the different components of a conventional Brayton cycle system and a solar concentration system through energy and exergy considerations. The environmental conditions of Barranquilla are used for the plant analysis using different working fluids throughout the day, where the carbon dioxide cycle presents an overall efficiency of 28.8 %, the cycle with air efficiency is 26.6 %, and the Helium cycle is 20.2 %. The model considers the energy flows within the plant and the exergy destruction. In this sense, the solar concentration system contributes an energy fraction of 0.209 when operating with air, while the exergy destruction fraction is 0.189 when operating with carbon dioxide when solar radiation is maximum. Finally, an estimation of the Levelized Cost of Energy is presented. © 2024
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