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

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

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 t...

Full description

Bibliographic Details
Main Author: Kyoung Hoon Kim
Format: Article
Language:English
Published: MDPI AG 2019-01-01
Series:Energies
Subjects:
organic flash cycle
regeneration
two-phase expander
low-grade heat source
efficiency
optimization
Online Access:https://www.mdpi.com/1996-1073/12/3/442
id doaj-3288728326174f5a8a0f4e0d70023e6d
record_format Article
spelling doaj-3288728326174f5a8a0f4e0d70023e6d2020-11-25T01:13:39ZengMDPI AGEnergies1996-10732019-01-0112344210.3390/en12030442en12030442Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade HeatKyoung Hoon Kim0Department of Mechanical Engineering, Kumoh National Institute of Technology, Gyeongbuk 39177, KoreaThe 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.https://www.mdpi.com/1996-1073/12/3/442organic flash cycleregenerationtwo-phase expanderlow-grade heat sourceefficiencyoptimization
collection DOAJ
language English
format Article
sources DOAJ
author Kyoung Hoon Kim
spellingShingle Kyoung Hoon Kim
Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade Heat
Energies
organic flash cycle
regeneration
two-phase expander
low-grade heat source
efficiency
optimization
author_facet Kyoung Hoon Kim
author_sort Kyoung Hoon Kim
title Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade Heat
title_short Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade Heat
title_full Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade Heat
title_fullStr Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade Heat
title_full_unstemmed Thermodynamic Performance and Optimization Analysis of a Modified Organic Flash Cycle for the Recovery of Low-Grade Heat
title_sort thermodynamic performance and optimization analysis of a modified organic flash cycle for the recovery of low-grade heat
publisher MDPI AG
series Energies
issn 1996-1073
publishDate 2019-01-01
description 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.
topic organic flash cycle
regeneration
two-phase expander
low-grade heat source
efficiency
optimization
url https://www.mdpi.com/1996-1073/12/3/442
work_keys_str_mv AT kyounghoonkim thermodynamicperformanceandoptimizationanalysisofamodifiedorganicflashcyclefortherecoveryoflowgradeheat
_version_ 1725160846739374080

Similar Items