Thermodynamic Investigation of a Solar Energy Cogeneration Plant Using an Organic Rankine Cycle in Supercritical Conditions

作     者：Larbi Afif Nahla Bouaziz 

作者机构：Research Lab Energetic and EnvironmentNational Engineering School of TunisTunis El Manar UniversityBelvedereTunis1002Tunisia 

出 版 物：《Fluid Dynamics & Materials Processing》 (流体力学与材料加工（英文）)

年 卷 期：2022年第18卷第5期

页      面：1243-1251页

核心收录：

学科分类：082601[工学-武器系统与运用工程] 08[工学] 082501[工学-飞行器设计] 0826[工学-兵器科学与技术] 082602[工学-兵器发射理论与技术] 0825[工学-航空宇航科学与技术] 

基　　金：The authors received no specific funding for this study 

主　　题：ORC energy efficiency solar energy ejector 

摘      要：In the present work,a novel Organic Rankine Cycle(ORC)configuration is used for a low-grade heat source cogeneration *** investigation is conducted accordingly into the simultaneous production of electricity and *** proposed configuration relies on concentrated solar power(as heat source)and ambient air(for cooling).Furthermore,two gas ejectors are added to the system in order to optimize the thermodynamic efficiency of the organic Rankine *** results show that the thermodynamic and geometric parameters related to these ejectors have an important effect on the overall system *** order to account for the related environmental impact,the following working fluids are considered:HCFC-124,HFC-236fa,HFO-1234yf and *** shown by the numerical simulations,the fluid R1234yf presents the minimal heat consumption and therefore provides an optimal thermal efficiency for the ORC cycle(which is around 29%).However,the refrigerant R236fa displays the highest refrigeration performances with a performance coefficient reaching a value as high as 0.38.