Thermodynamic performance study of a new SOFC-CCHP system with diesel reforming by CLHG to produce hydrogen as fuel

In this paper, a combined cooling, heating and power system based on diesel-fueled chemical looping hydrogen generation and solid oxide fuel cell, and with CO2 capture was established. The system can achieve efficient power generation while separating CO2 without energy consumption, and effectively avoid the carbon deposition problem. Aspen software is used to simulate the process of the system, and FORTRAN program is used to calculate, through the thermodynamic analysis model, the unique performance change law of the new system using diesel is obtained, and thermodynamic analysis is performed on the system at last. The results show that the power efficiency of the new system is 54.1%, while the exergy efficiency and fuel energy saving ratio can reach 53%. At the same time, the influence of fuel flow and fuel utilization factor on the system performance does not continue to increase or decrease, and the system performance parameters will have a peak value with the change of pressure. The results not only provide a theoretical basis for the future construction of new diesel-fueled energy supply system, but also provide a new idea for the optimization scheme of energy-saving system and carbon recovery. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

This paper introduces a combined cooling, heating and power system based on diesel-fueled chemical looping hydrogen generation and solid oxide fuel cell, which can achieve efficient power generation and CO2 separation. Through thermodynamic analysis simulation and calculation, the system's fuel energy saving ratio can reach 53%, with system performance parameters having a peak value. This provides a new idea for the construction of future diesel-fueled energy supply systems and the optimization of energy-saving systems.