Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy

In this article, exergoeconomic analysis of a hybrid desalination system driven by renewable geothermal energy source is investigated. Freshwater and electrical power are the products of this system. Humidification – dehumidification (HDH) unit works in parallel with reverse osmosis (RO) unit to pro...

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Autores principales:	Mohammad Hadi Mohammadi, Hamid Reza Abbasi, Maryam Ghodrat
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Humidification-dehumidification Desalination Geothermal energy Exergoeconomic analysis Reverse osmosis Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/5cbd2e20d3a0450286d781d345e34a14
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spelling	oai:doaj.org-article:5cbd2e20d3a0450286d781d345e34a142021-11-04T04:39:19ZOptimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy2590-174510.1016/j.ecmx.2021.100124https://doaj.org/article/5cbd2e20d3a0450286d781d345e34a142021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590174521000490https://doaj.org/toc/2590-1745In this article, exergoeconomic analysis of a hybrid desalination system driven by renewable geothermal energy source is investigated. Freshwater and electrical power are the products of this system. Humidification – dehumidification (HDH) unit works in parallel with reverse osmosis (RO) unit to produce freshwater and Kalina cycle is the power generator unit. Thermoelectric generator (TEG) is responsible for providing the energy required by RO unit. As both HDH and TEG can operate with low-grade energy, two different modes are suggested for the proposed system. In the first mode, the geothermal low grade energy stream is passed to TEG unit, while in the second, it goes through the HDH unit. The effect of different parameters on four main objective functions is examined in parametric study. Moreover, with the aid of selection maps, the objectives of modes can be compared in different operating conditions. The maximum attainable exergy efficiency is calculated to be 28.86% for mode 2. Single objective optimization studies revealed that the first mode produces the largest amount of freshwater at a rate of 22,072 (m3/day), while the minimum achievable freshwater cost and total product cost rate can be obtained in the second mode, which is calculated to be 21.94 (¢/m3) and 37.19 ($/GJ). Besides, Sankey diagrams for exergy flow and mass flow of saline water are presented to unravel the impact of each sub-system on exergy and salinity.Mohammad Hadi MohammadiHamid Reza AbbasiMaryam GhodratElsevierarticleHumidification-dehumidificationDesalinationGeothermal energyExergoeconomic analysisReverse osmosisEngineering (General). Civil engineering (General)TA1-2040ENEnergy Conversion and Management: X, Vol 12, Iss , Pp 100124- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Humidification-dehumidification Desalination Geothermal energy Exergoeconomic analysis Reverse osmosis Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Humidification-dehumidification Desalination Geothermal energy Exergoeconomic analysis Reverse osmosis Engineering (General). Civil engineering (General) TA1-2040 Mohammad Hadi Mohammadi Hamid Reza Abbasi Maryam Ghodrat Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy
description	In this article, exergoeconomic analysis of a hybrid desalination system driven by renewable geothermal energy source is investigated. Freshwater and electrical power are the products of this system. Humidification – dehumidification (HDH) unit works in parallel with reverse osmosis (RO) unit to produce freshwater and Kalina cycle is the power generator unit. Thermoelectric generator (TEG) is responsible for providing the energy required by RO unit. As both HDH and TEG can operate with low-grade energy, two different modes are suggested for the proposed system. In the first mode, the geothermal low grade energy stream is passed to TEG unit, while in the second, it goes through the HDH unit. The effect of different parameters on four main objective functions is examined in parametric study. Moreover, with the aid of selection maps, the objectives of modes can be compared in different operating conditions. The maximum attainable exergy efficiency is calculated to be 28.86% for mode 2. Single objective optimization studies revealed that the first mode produces the largest amount of freshwater at a rate of 22,072 (m3/day), while the minimum achievable freshwater cost and total product cost rate can be obtained in the second mode, which is calculated to be 21.94 (¢/m3) and 37.19 ($/GJ). Besides, Sankey diagrams for exergy flow and mass flow of saline water are presented to unravel the impact of each sub-system on exergy and salinity.
format	article
author	Mohammad Hadi Mohammadi Hamid Reza Abbasi Maryam Ghodrat
author_facet	Mohammad Hadi Mohammadi Hamid Reza Abbasi Maryam Ghodrat
author_sort	Mohammad Hadi Mohammadi
title	Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy
title_short	Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy
title_full	Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy
title_fullStr	Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy
title_full_unstemmed	Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy
title_sort	optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/5cbd2e20d3a0450286d781d345e34a14
work_keys_str_mv	AT mohammadhadimohammadi optimaldesignofahybridthermalandmembranebaseddesalinationunitbasedonrenewablegeothermalenergy AT hamidrezaabbasi optimaldesignofahybridthermalandmembranebaseddesalinationunitbasedonrenewablegeothermalenergy AT maryamghodrat optimaldesignofahybridthermalandmembranebaseddesalinationunitbasedonrenewablegeothermalenergy
_version_	1718445213220864000

Optimal design of a hybrid thermal- and membrane-based desalination unit based on renewable geothermal energy

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