Modification in energy and productivity of high-temperature variable pressure humidification–compression

One of the important approaches in thermal desalination processes is consumed energy reduction. To achieve this aim, three arrangements of humidification–compression (HC) processes are designed. Two single-stage processes and one double-stage HC process are designed and their performances are compar...

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Autores principales:	Marzieh Abedi, Younes Ghalavand
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	computer simulation desalination energy saving humidification–compression process modification Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/ceb7519568414a789a5b0188ee62d0fc
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spelling	oai:doaj.org-article:ceb7519568414a789a5b0188ee62d0fc2021-11-23T18:56:06ZModification in energy and productivity of high-temperature variable pressure humidification–compression1606-97491607-079810.2166/ws.2021.120https://doaj.org/article/ceb7519568414a789a5b0188ee62d0fc2021-11-01T00:00:00Zhttp://ws.iwaponline.com/content/21/7/3557https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798One of the important approaches in thermal desalination processes is consumed energy reduction. To achieve this aim, three arrangements of humidification–compression (HC) processes are designed. Two single-stage processes and one double-stage HC process are designed and their performances are compared based on desalinated water production, gained output ratio (GOR) and power consumption. An attempt is made to reduce the power consumption and improve the system performance. All three processes are simulated to examine the effect of operation parameters on HC performance. To validate these simulations, the theoretical results are compared with an experimental rig with a humidifier column of 1.5 m height. The results indicate that the simulation values conform to the experimental data. The effect of minimum approach temperature (ΔTmin) on system performance is investigated for three processes subject to constant operating conditions (feed temperature, water mass flow, air mass flow, and pressure ratio). For this purpose, four values of ΔTmin are considered (7.5, 10, 12.5 and 15 °C) for heat exchanger operations. The results indicate that an increase in ΔTmin in all three cases increases desalinated water volume and GOR. Also, the double-stage HC system has higher water production rate (66.08 kg/h) and higher GOR (17.19) compared with its counterparts. HIGHLIGHTS Single-stage and double-stage HC arrangements are proposed and simulated.; The effect of minimum approach temperature on system performance is evaluated.; The double-stage variable pressure HC outperforms its counterparts.;Marzieh AbediYounes GhalavandIWA Publishingarticlecomputer simulationdesalinationenergy savinghumidification–compressionprocess modificationWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 7, Pp 3557-3569 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	computer simulation desalination energy saving humidification–compression process modification Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	computer simulation desalination energy saving humidification–compression process modification Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Marzieh Abedi Younes Ghalavand Modification in energy and productivity of high-temperature variable pressure humidification–compression
description	One of the important approaches in thermal desalination processes is consumed energy reduction. To achieve this aim, three arrangements of humidification–compression (HC) processes are designed. Two single-stage processes and one double-stage HC process are designed and their performances are compared based on desalinated water production, gained output ratio (GOR) and power consumption. An attempt is made to reduce the power consumption and improve the system performance. All three processes are simulated to examine the effect of operation parameters on HC performance. To validate these simulations, the theoretical results are compared with an experimental rig with a humidifier column of 1.5 m height. The results indicate that the simulation values conform to the experimental data. The effect of minimum approach temperature (ΔTmin) on system performance is investigated for three processes subject to constant operating conditions (feed temperature, water mass flow, air mass flow, and pressure ratio). For this purpose, four values of ΔTmin are considered (7.5, 10, 12.5 and 15 °C) for heat exchanger operations. The results indicate that an increase in ΔTmin in all three cases increases desalinated water volume and GOR. Also, the double-stage HC system has higher water production rate (66.08 kg/h) and higher GOR (17.19) compared with its counterparts. HIGHLIGHTS Single-stage and double-stage HC arrangements are proposed and simulated.; The effect of minimum approach temperature on system performance is evaluated.; The double-stage variable pressure HC outperforms its counterparts.;
format	article
author	Marzieh Abedi Younes Ghalavand
author_facet	Marzieh Abedi Younes Ghalavand
author_sort	Marzieh Abedi
title	Modification in energy and productivity of high-temperature variable pressure humidification–compression
title_short	Modification in energy and productivity of high-temperature variable pressure humidification–compression
title_full	Modification in energy and productivity of high-temperature variable pressure humidification–compression
title_fullStr	Modification in energy and productivity of high-temperature variable pressure humidification–compression
title_full_unstemmed	Modification in energy and productivity of high-temperature variable pressure humidification–compression
title_sort	modification in energy and productivity of high-temperature variable pressure humidification–compression
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ceb7519568414a789a5b0188ee62d0fc
work_keys_str_mv	AT marziehabedi modificationinenergyandproductivityofhightemperaturevariablepressurehumidificationcompression AT younesghalavand modificationinenergyandproductivityofhightemperaturevariablepressurehumidificationcompression
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Modification in energy and productivity of high-temperature variable pressure humidification–compression

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