Exergetical Analysis of Organic Flash Cycle with Two-Phase Expander for Recovery of Finite Thermal Reservoirs

作     者：Chul Ho Han Kyoung Hoon Kim 

作者机构：Department of Intelligent Mechanical EngineeringKumoh National Institute of TechnologyDaehakro 61GumiGyeongbuk 730-701Korea Department of Mechanical EngineeringKumoh National Institute of TechnologyDaehakro 61GumiGyeongbuk 730-701Korea 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2014年第23卷第6期

页      面：572-579页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：supported by Research Fund Kumoh National Institute of Technology 

主　　题：organic flash cycle(OFC) low grade heat source exergy anecgy 

摘      要：In this work exergetical performance analysis is carried out based on the second law of thermodynamics for organic flash cycle(OFC) using a two-phase expander instead of throttle expansion in order to recover efficiently finite thermal *** exergy destructions(anergies) at various components of the system are theoretically investigated as well as the exergy *** show that the anergy of heat exchanger or two-phase expander decreases while the anergy of throttle valve increases with increasing flash temperature,and the exergy efficiency has an optimum value with respect to the flash *** the optimal conditions with respect to the flash temperature,exergy efficiency increases with the heating temperature and the component having the largest exergy destruction varies with the flash temperature or heating temperature.