Titre : Energy and Exergy analysis of Carbon Dioxide Transcritical Booster System 

Auteurs : Yosra Ben Salem
, Ahmed Bellagi,  

Revue : Entropy: Thermodynamics – Energy – Environment – Economy  

Numéro : Special issue IEES 

Volume : 5 

Date : 2024/01/26 

DOI : 10.21494/ISTE.OP.2024.1071 

ISSN : 2634-1476 

Résumé : In this paper, energy and exergy analysis of CO2–booster two-stage chiller combining transcritical cycle in cascade with a subcritical are carried out. The examined system produce refrigeration at two temperatures levels and hot water at 73°C.The necessary thermodynamic parameters for analysis are calculated using the software Engineering Equation Solver. A parametric study is conducted to investigate the effect of MT-evaporating and heat rejection temperatures on the coefficient of performance, the total lost work and the exergy lost in different components in the CO2 cycle. The largest lost was recorded in the MT compressor; followed by the high-pressure expansion valve, the Gas cooler, the intermediate pressure valve, LTV and MTV expansion valves, the compressor LT and IP Receiver. 

Éditeur : ISTE OpenScience