Comparison of spacer-less and spacer-filled reverse electrodialysis
Reverse electrodialysis (RED) is a renewable energy technology used to recover dissipated chemical energy in river estuaries globally. This technology has recently attracted significant attention owing to its great reliability and scalability. In this study, we propose the use of a spacer-less RED (...
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Veröffentlicht in: | Journal of renewable and sustainable energy 2017-07, Vol.9 (4) |
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description | Reverse electrodialysis (RED) is a renewable energy technology used to recover dissipated chemical energy in river estuaries globally. This technology has recently attracted significant attention owing to its great reliability and scalability. In this study, we propose the use of a spacer-less RED (i.e., a system in which a woven mesh is excluded from the flow channel). The performance of spacer-less RED, including its gross power density, internal resistance, and hydraulic loss, is compared with that of the spacer-filled RED, in relation to the variation in the inlet flow rate. The mixing enhancement is more important than the spacer shadow effect when considering power generation. The spacer-filled RED has uniform internal resistance over the whole range of flow rates, while the spacer-less RED shows a dramatic decrease in resistance with the increasing flow rate. The hydraulic loss is much lower in the spacer-less RED. The maximal net power, accordingly, is generated at the flow rate of 3 ml/min (for spacer-filled RED) and 12.5 ml/min (for spacer-less RED). In the end, a maximal net power density of 0.62 W/m2 was obtained in both structures. |
doi_str_mv | 10.1063/1.4996579 |
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This technology has recently attracted significant attention owing to its great reliability and scalability. In this study, we propose the use of a spacer-less RED (i.e., a system in which a woven mesh is excluded from the flow channel). The performance of spacer-less RED, including its gross power density, internal resistance, and hydraulic loss, is compared with that of the spacer-filled RED, in relation to the variation in the inlet flow rate. The mixing enhancement is more important than the spacer shadow effect when considering power generation. The spacer-filled RED has uniform internal resistance over the whole range of flow rates, while the spacer-less RED shows a dramatic decrease in resistance with the increasing flow rate. The hydraulic loss is much lower in the spacer-less RED. The maximal net power, accordingly, is generated at the flow rate of 3 ml/min (for spacer-filled RED) and 12.5 ml/min (for spacer-less RED). In the end, a maximal net power density of 0.62 W/m2 was obtained in both structures.</description><identifier>ISSN: 1941-7012</identifier><identifier>EISSN: 1941-7012</identifier><identifier>DOI: 10.1063/1.4996579</identifier><identifier>CODEN: JRSEBH</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Chemical energy ; Electric power generation ; Electrodialysis ; Energy technology ; Estuaries ; Flow resistance ; Flow velocity ; Inlet flow ; Organic chemistry</subject><ispartof>Journal of renewable and sustainable energy, 2017-07, Vol.9 (4)</ispartof><rights>Author(s)</rights><rights>2017 Author(s). Published by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c327t-8890525c1965ec34b275f2c49835a2230830d9336a3e62c16c6c35a85530beaa3</citedby><cites>FETCH-LOGICAL-c327t-8890525c1965ec34b275f2c49835a2230830d9336a3e62c16c6c35a85530beaa3</cites><orcidid>0000-0002-6290-318X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jrse/article-lookup/doi/10.1063/1.4996579$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27901,27902,76127</link.rule.ids></links><search><creatorcontrib>Kwon, Kilsung</creatorcontrib><creatorcontrib>Park, Byung-Ho</creatorcontrib><creatorcontrib>Kim, Deok Han</creatorcontrib><creatorcontrib>Kim, Daejoong</creatorcontrib><title>Comparison of spacer-less and spacer-filled reverse electrodialysis</title><title>Journal of renewable and sustainable energy</title><description>Reverse electrodialysis (RED) is a renewable energy technology used to recover dissipated chemical energy in river estuaries globally. This technology has recently attracted significant attention owing to its great reliability and scalability. In this study, we propose the use of a spacer-less RED (i.e., a system in which a woven mesh is excluded from the flow channel). The performance of spacer-less RED, including its gross power density, internal resistance, and hydraulic loss, is compared with that of the spacer-filled RED, in relation to the variation in the inlet flow rate. The mixing enhancement is more important than the spacer shadow effect when considering power generation. The spacer-filled RED has uniform internal resistance over the whole range of flow rates, while the spacer-less RED shows a dramatic decrease in resistance with the increasing flow rate. The hydraulic loss is much lower in the spacer-less RED. The maximal net power, accordingly, is generated at the flow rate of 3 ml/min (for spacer-filled RED) and 12.5 ml/min (for spacer-less RED). In the end, a maximal net power density of 0.62 W/m2 was obtained in both structures.</description><subject>Chemical energy</subject><subject>Electric power generation</subject><subject>Electrodialysis</subject><subject>Energy technology</subject><subject>Estuaries</subject><subject>Flow resistance</subject><subject>Flow velocity</subject><subject>Inlet flow</subject><subject>Organic chemistry</subject><issn>1941-7012</issn><issn>1941-7012</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqdkM1LAzEQxYMoWKsH_4MFTwpb87HJJkdZ_IKCFz2HNDuBlO1mzWwL_e9daUXPnmaG-fHe4xFyzeiCUSXu2aIyRsnanJAZMxUra8r46Z_9nFwgrilVnEo-I02TNoPLEVNfpFDg4DzksgPEwvXtzx1i10FbZNhBRiigAz_m1EbX7THiJTkLrkO4Os45-Xh6fG9eyuXb82vzsCy94PVYam0mS-nZlA-8qFa8loH7ymghHeeCakFbI4RyAhT3THnlp4-WUtAVOCfm5OagO-T0uQUc7Tptcz9ZWs6YolrX0kzU7YHyOSFmCHbIcePy3jJqvzuyzB47mti7A4s-jm6Mqf8fvEv5F7RDG8QXxk5zrw</recordid><startdate>201707</startdate><enddate>201707</enddate><creator>Kwon, Kilsung</creator><creator>Park, Byung-Ho</creator><creator>Kim, Deok Han</creator><creator>Kim, Daejoong</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-6290-318X</orcidid></search><sort><creationdate>201707</creationdate><title>Comparison of spacer-less and spacer-filled reverse electrodialysis</title><author>Kwon, Kilsung ; Park, Byung-Ho ; Kim, Deok Han ; Kim, Daejoong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c327t-8890525c1965ec34b275f2c49835a2230830d9336a3e62c16c6c35a85530beaa3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Chemical energy</topic><topic>Electric power generation</topic><topic>Electrodialysis</topic><topic>Energy technology</topic><topic>Estuaries</topic><topic>Flow resistance</topic><topic>Flow velocity</topic><topic>Inlet flow</topic><topic>Organic chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kwon, Kilsung</creatorcontrib><creatorcontrib>Park, Byung-Ho</creatorcontrib><creatorcontrib>Kim, Deok Han</creatorcontrib><creatorcontrib>Kim, Daejoong</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of renewable and sustainable energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kwon, Kilsung</au><au>Park, Byung-Ho</au><au>Kim, Deok Han</au><au>Kim, Daejoong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comparison of spacer-less and spacer-filled reverse electrodialysis</atitle><jtitle>Journal of renewable and sustainable energy</jtitle><date>2017-07</date><risdate>2017</risdate><volume>9</volume><issue>4</issue><issn>1941-7012</issn><eissn>1941-7012</eissn><coden>JRSEBH</coden><abstract>Reverse electrodialysis (RED) is a renewable energy technology used to recover dissipated chemical energy in river estuaries globally. This technology has recently attracted significant attention owing to its great reliability and scalability. In this study, we propose the use of a spacer-less RED (i.e., a system in which a woven mesh is excluded from the flow channel). The performance of spacer-less RED, including its gross power density, internal resistance, and hydraulic loss, is compared with that of the spacer-filled RED, in relation to the variation in the inlet flow rate. The mixing enhancement is more important than the spacer shadow effect when considering power generation. The spacer-filled RED has uniform internal resistance over the whole range of flow rates, while the spacer-less RED shows a dramatic decrease in resistance with the increasing flow rate. The hydraulic loss is much lower in the spacer-less RED. The maximal net power, accordingly, is generated at the flow rate of 3 ml/min (for spacer-filled RED) and 12.5 ml/min (for spacer-less RED). In the end, a maximal net power density of 0.62 W/m2 was obtained in both structures.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4996579</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-6290-318X</orcidid></addata></record> |
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subjects | Chemical energy Electric power generation Electrodialysis Energy technology Estuaries Flow resistance Flow velocity Inlet flow Organic chemistry |
title | Comparison of spacer-less and spacer-filled reverse electrodialysis |
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