Thermodynamic analysis of simple and regenerative Brayton cycles for the concentrated solar power applications

The statistical regression analysis is used in the third step to develop correlations for the cycle efficiency and net specific work of the same form as theoretical expressions developed in Step 1. The last step in the process involves construction of performance maps, where performance parameters, such as thermal efficiency and net specific work output are presented as functions of the cycle operating conditions. The performance map for thermal efficiency shows that, depending on the operating conditions, either N2 or CO2 are the best choices of the working fluids. However, considering the net specific work output, He is the best working fluid over the entire analyzed range of the cycle operating conditions.