Effect of cooling system design on the performance of the recompression CO2 cycle for concentrated solar power application

Investigating the effect of dry cooling system design on the performance of supercritical CO2 cycle in concentrated solar power application

“…Table 2-12, outlines the key findings of the studies with dry-cooled sCO2 power cycles from the existing literature. Only a few studies (Singh et al [178,179], Dunham and Iverson [124], Zeyghami and Khalili [131], Milani et al [133], Duniam et al [148], and Ehsan et al [147,180,181]) are identified with a focus on the cooling performance of the sCO2 power cycles and are discussed in the following subsections. These studies are important to evaluate the feasibility of dry cooling in sCO2 power cycles for CSP application.…”

“…al. also [181,218] investigated the impact of climate variation on the NDDCT equipped sCO2 power cycle for CSP application.…”

“…The mass flow rate of air through the ACHE depends on the air temperature difference and the tower elevation. The choice of various geometric parameters for the cooling system is elaborately discussed in our previous work [181]. The system simulation is performed with IPSEpro [223].…”

“…The validation of our proposed cooling tower model with a nodal approach applied in the heat exchanger performed in our earlier studies [147,180]. The evaluation of the local heat transfer characteristics, the draft force and air mass flow rate with a detailed flow chart are comprehensively discussed in our previous work [181]. The analysis in section 8.4 is performed with a simple cooler so as to rectify an optimal working condition in terms of MCIT and cycle fluid inlet temperature in the tower and reveals the required size of the NDDCT for both cases.…”

“…An efficient cooling system is essential to deliver the required cooling tower exit temperature for maximum cycle efficiency [181]. The high-fluid density, higher isobaric heat capacity and lower specific volume of sCO2 can considerably reduce the total compression work of the cycle [121].…”