Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy

A new combined cogeneration system for producing electrical power and pure water is proposed and analyzed from the viewpoints of thermodynamics and economics. The system uses geothermal energy as a heat source and consists of a Kalina cycle, a LiBr/H2O heat transformer and a water purification syste...

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Main Authors:	Mehri Akbari, Seyed M. S. Mahmoudi, Mortaza Yari, Marc A. Rosen
Format:	Article
Language:	English
Published:	MDPI AG 2014-04-01
Series:	Sustainability
Subjects:	Geothermal energy Kalina cycle LiBr/H2O heat transformer Thermodynamic analysis Thermoeconomic analysis
Online Access:	http://www.mdpi.com/2071-1050/6/4/1796

id	doaj-9e4b95eabcd0424ab9d29d5a07974179
record_format	Article
spelling	doaj-9e4b95eabcd0424ab9d29d5a079741792020-11-24T22:33:51ZengMDPI AGSustainability2071-10502014-04-01641796182010.3390/su6041796su6041796Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal EnergyMehri Akbari0Seyed M. S. Mahmoudi1Mortaza Yari2Marc A. Rosen3Faculty of Mechanical Engineering, University of Tabriz, Daneshgah Street, Tabriz 5166616471, IranFaculty of Mechanical Engineering, University of Tabriz, Daneshgah Street, Tabriz 5166616471, IranFaculty of Mechanical Engineering, University of Tabriz, Daneshgah Street, Tabriz 5166616471, IranFaculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1H 7K4, CanadaA new combined cogeneration system for producing electrical power and pure water is proposed and analyzed from the viewpoints of thermodynamics and economics. The system uses geothermal energy as a heat source and consists of a Kalina cycle, a LiBr/H2O heat transformer and a water purification system. A parametric study is carried out in order to investigate the effects on system performance of the turbine inlet pressure and the evaporator exit temperature. For the proposed system, the first and second law efficiencies are found to be in the ranges of 16%–18.2% and 61.9%–69.1%, respectively. For a geothermal water stream with a mass flow rate of 89 kg/s and a temperature of 124 °C, the maximum production rate for pure water is found to be 0.367 kg/s.http://www.mdpi.com/2071-1050/6/4/1796Geothermal energyKalina cycleLiBr/H2O heat transformerThermodynamic analysisThermoeconomic analysis
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Mehri Akbari Seyed M. S. Mahmoudi Mortaza Yari Marc A. Rosen
spellingShingle	Mehri Akbari Seyed M. S. Mahmoudi Mortaza Yari Marc A. Rosen Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy Sustainability Geothermal energy Kalina cycle LiBr/H2O heat transformer Thermodynamic analysis Thermoeconomic analysis
author_facet	Mehri Akbari Seyed M. S. Mahmoudi Mortaza Yari Marc A. Rosen
author_sort	Mehri Akbari
title	Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy
title_short	Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy
title_full	Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy
title_fullStr	Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy
title_full_unstemmed	Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy
title_sort	energy and exergy analyses of a new combined cycle for producing electricity and desalinated water using geothermal energy
publisher	MDPI AG
series	Sustainability
issn	2071-1050
publishDate	2014-04-01
description	A new combined cogeneration system for producing electrical power and pure water is proposed and analyzed from the viewpoints of thermodynamics and economics. The system uses geothermal energy as a heat source and consists of a Kalina cycle, a LiBr/H2O heat transformer and a water purification system. A parametric study is carried out in order to investigate the effects on system performance of the turbine inlet pressure and the evaporator exit temperature. For the proposed system, the first and second law efficiencies are found to be in the ranges of 16%–18.2% and 61.9%–69.1%, respectively. For a geothermal water stream with a mass flow rate of 89 kg/s and a temperature of 124 °C, the maximum production rate for pure water is found to be 0.367 kg/s.
topic	Geothermal energy Kalina cycle LiBr/H2O heat transformer Thermodynamic analysis Thermoeconomic analysis
url	http://www.mdpi.com/2071-1050/6/4/1796
work_keys_str_mv	AT mehriakbari energyandexergyanalysesofanewcombinedcycleforproducingelectricityanddesalinatedwaterusinggeothermalenergy AT seyedmsmahmoudi energyandexergyanalysesofanewcombinedcycleforproducingelectricityanddesalinatedwaterusinggeothermalenergy AT mortazayari energyandexergyanalysesofanewcombinedcycleforproducingelectricityanddesalinatedwaterusinggeothermalenergy AT marcarosen energyandexergyanalysesofanewcombinedcycleforproducingelectricityanddesalinatedwaterusinggeothermalenergy
_version_	1725729026818965504

Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy

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