Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade Heat

被引：11
|
作者：
Kim, Kyoung Hoon [1 ]
机构：
[1] Kumoh Natl Inst Technol, Dept Mech Engn, Gyeongbuk 39177, South Korea
来源：
ENERGIES | 2019年 / 12卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
organic flash cycle; regeneration; two-phase expander; low-grade heat source; efficiency; optimization; PATEL-TEJA EQUATION; RANKINE-CYCLE; COMBINED POWER; OFC; ARCHITECTURES; SELECTIONS; SYSTEMS; ENGINE; ENERGY; FLUID;
D O I：
10.3390/en12030442
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The recently proposed organic flash cycle (OFC) has the potential for the efficient recovery of low-grade heat, mainly due to the reduction of irreversibilities in the heat input unit. In the present study, a modified OFC (OFCM) employing a two-phase expander (TPE) and regeneration is proposed and thermodynamic and optimization analysis on this cycle is conducted compared with the basic OFC (OFCB). Six substances are considered as the working fluids. Influences of flash temperature, source temperature, and working fluid are systemically investigated on the system performance. Results showed that OFCM is superior to OFCB in the aspects of power production, thermal, and second-law efficiencies.
引用
收藏
页数：21
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