Organic Rankine Cycle recovering stage heat from MSF desalination distillate water

被引：25

作者：

Al-Weshahi, Mohammed A. ^{[1
]}

Anderson, Alexander ^{[1
]}

Tian, Guohong ^{[1
,2
]}

机构：

[1] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Newcastle Univ, Sir Joseph Swan Ctr Energy Res, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

APPLIED ENERGY | 2014年 / 130卷

关键词：

ORC; MSF desalination; Energy; Exergy; Parametric study; POWER-GENERATION; DESIGN; ENHANCEMENT; SELECTION; SEAWATER;

D O I：

10.1016/j.apenergy.2014.02.038

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：

This investigation addresses the potential for heat recovery from Multi Stage Flash (MSF) desalination plant hot distillate water to power an Organic Rankine Cycle (ORC), comparing R134a and R245fa refrigerants as the working fluid. Using design characteristics of an existing ORC unit, the model was first validated against its measured output. The distillate hot water from MSF stages is utilised to provide heat to the ORC and performance is investigated for both working fluids and for the number of MSF stages for heat recovery. For the specific MSF plant investigated, the net produced ORC power is found the highest with extraction up to MSF powering stage 8, generating 359 kW when R245fa is used and 307 kW when R134a is used. Both refrigerants exhibit an increase of power output and decrease of energy efficiency as heat is recovered from more MSF stages. The influence of variation of the evaporator and cooling temperature on ORC performance is demonstrated to be significant for both refrigerants, with R245fa performing better in this specific application. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：738 / 747

页数：10

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