Solution-side effectiveness for a liquid-to-air membrane energy exchanger used as a dehumidifier/regenerator
•Liquid-to-air membrane energy exchangers are called LAMEEs in this paper.•For the first time, the solution-side (SS) effectiveness are introduced for LAMEEs.•The SS effectiveness is very important when a LAMEE is used as a regenerator.•Both the air-side and solution-side effectiveness of the LAMEE...
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| Veröffentlicht in: | Applied energy 2014-01, Vol.113, p.872-882 |
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| creator | Ghadiri Moghaddam, Davood Besant, Robert W. Simonson, Carey J. |
| description | •Liquid-to-air membrane energy exchangers are called LAMEEs in this paper.•For the first time, the solution-side (SS) effectiveness are introduced for LAMEEs.•The SS effectiveness is very important when a LAMEE is used as a regenerator.•Both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗.•The air-side and solution-side effectiveness values are different in most cases.
A liquid-to-air membrane energy exchanger (LAMEE) is an energy exchange device that transfers heat and moisture between air and salt solution streams through a semi-permeable membrane which is permeable for water vapor but impermeable for liquid water. LAMEEs have been used as a dehumidifier/regenerator in air-conditioning systems. In this paper, the solution-side effectiveness are presented for a small-scale single-panel LAMEE when it is used to regenerate the solution flow. The solution-side effectiveness are very important in regenerators where the main focus is on the salt solution, and the solution properties (i.e. solution outlet concentration) are important. The small-scale LAMEE is tested under air dehumidification and solution regeneration test conditions using a LiCl solution at one NTU (i.e. NTU=5) and three different Cr∗ values (Cr∗=2, 4 and 6). The results show that both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗. The solution-side latent effectiveness is lower for the regenerator in comparison to the dehumidifier (e.g. 43% lower at Cr∗=6). Also, the numerical results for a small-scale LAMEE which were presented in literature are used in this paper to evaluate the solution-side effectiveness of the LAMEE under different test conditions. The numerical results show that the difference between the air-side and solution-side latent effectiveness are negligible. Therefore, the air-side latent effectiveness can be used to evaluate the solution-side latent effectiveness of LAMEEs. |
| doi_str_mv | 10.1016/j.apenergy.2013.08.037 |
| format | Article |
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A liquid-to-air membrane energy exchanger (LAMEE) is an energy exchange device that transfers heat and moisture between air and salt solution streams through a semi-permeable membrane which is permeable for water vapor but impermeable for liquid water. LAMEEs have been used as a dehumidifier/regenerator in air-conditioning systems. In this paper, the solution-side effectiveness are presented for a small-scale single-panel LAMEE when it is used to regenerate the solution flow. The solution-side effectiveness are very important in regenerators where the main focus is on the salt solution, and the solution properties (i.e. solution outlet concentration) are important. The small-scale LAMEE is tested under air dehumidification and solution regeneration test conditions using a LiCl solution at one NTU (i.e. NTU=5) and three different Cr∗ values (Cr∗=2, 4 and 6). The results show that both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗. The solution-side latent effectiveness is lower for the regenerator in comparison to the dehumidifier (e.g. 43% lower at Cr∗=6). Also, the numerical results for a small-scale LAMEE which were presented in literature are used in this paper to evaluate the solution-side effectiveness of the LAMEE under different test conditions. The numerical results show that the difference between the air-side and solution-side latent effectiveness are negligible. Therefore, the air-side latent effectiveness can be used to evaluate the solution-side latent effectiveness of LAMEEs.</description><identifier>ISSN: 0306-2619</identifier><identifier>EISSN: 1872-9118</identifier><identifier>DOI: 10.1016/j.apenergy.2013.08.037</identifier><identifier>CODEN: APENDX</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Air conditioning. Ventilation ; Air treatment ; Applied sciences ; Dehumidifier ; Devices using thermal energy ; Effectiveness ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; Heat exchangers (included heat transformers, condensers, cooling towers) ; Heating, air conditioning and ventilation ; LAMEE ; Regenerator ; Salt solution</subject><ispartof>Applied energy, 2014-01, Vol.113, p.872-882</ispartof><rights>2013 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c375t-19efec0d74018f3fe2fa5091ee29fe3df981373c389f3465f80d98d546327873</citedby><cites>FETCH-LOGICAL-c375t-19efec0d74018f3fe2fa5091ee29fe3df981373c389f3465f80d98d546327873</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.apenergy.2013.08.037$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,4024,27923,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27927994$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Ghadiri Moghaddam, Davood</creatorcontrib><creatorcontrib>Besant, Robert W.</creatorcontrib><creatorcontrib>Simonson, Carey J.</creatorcontrib><title>Solution-side effectiveness for a liquid-to-air membrane energy exchanger used as a dehumidifier/regenerator</title><title>Applied energy</title><description>•Liquid-to-air membrane energy exchangers are called LAMEEs in this paper.•For the first time, the solution-side (SS) effectiveness are introduced for LAMEEs.•The SS effectiveness is very important when a LAMEE is used as a regenerator.•Both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗.•The air-side and solution-side effectiveness values are different in most cases.
A liquid-to-air membrane energy exchanger (LAMEE) is an energy exchange device that transfers heat and moisture between air and salt solution streams through a semi-permeable membrane which is permeable for water vapor but impermeable for liquid water. LAMEEs have been used as a dehumidifier/regenerator in air-conditioning systems. In this paper, the solution-side effectiveness are presented for a small-scale single-panel LAMEE when it is used to regenerate the solution flow. The solution-side effectiveness are very important in regenerators where the main focus is on the salt solution, and the solution properties (i.e. solution outlet concentration) are important. The small-scale LAMEE is tested under air dehumidification and solution regeneration test conditions using a LiCl solution at one NTU (i.e. NTU=5) and three different Cr∗ values (Cr∗=2, 4 and 6). The results show that both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗. The solution-side latent effectiveness is lower for the regenerator in comparison to the dehumidifier (e.g. 43% lower at Cr∗=6). Also, the numerical results for a small-scale LAMEE which were presented in literature are used in this paper to evaluate the solution-side effectiveness of the LAMEE under different test conditions. The numerical results show that the difference between the air-side and solution-side latent effectiveness are negligible. Therefore, the air-side latent effectiveness can be used to evaluate the solution-side latent effectiveness of LAMEEs.</description><subject>Air conditioning. Ventilation</subject><subject>Air treatment</subject><subject>Applied sciences</subject><subject>Dehumidifier</subject><subject>Devices using thermal energy</subject><subject>Effectiveness</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Heat exchangers (included heat transformers, condensers, cooling towers)</subject><subject>Heating, air conditioning and ventilation</subject><subject>LAMEE</subject><subject>Regenerator</subject><subject>Salt solution</subject><issn>0306-2619</issn><issn>1872-9118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkE9LxDAQxYMouK5-BelF8NI6SbZtclPEfyB40HuIyWTN0jZr0i767c266lWYYS7vzZv5EXJKoaJAm4tVpdc4YFx-Vgwor0BUwNs9MqOiZaWkVOyTGXBoStZQeUiOUloBAKMMZqR7Dt00-jCUyVss0Dk0o9_kfSkVLsRCF51_n7wtx1BqH4se-9eohyz9jizww7zpYYmxmBLaQqfssPg29d565zFeRFxupXoM8ZgcON0lPPmZc_Jye_NyfV8-Pt09XF89loa39VhSifkKsO0CqHDcIXO6BkkRmXTIrZOC8pYbLqTji6Z2AqwUtl40nLWi5XNyvlu7juF9wjSq3ieDXZfPDlNStIaaL3iTe06andTEkFJEp9bR9zp-KgpqS1et1C9dtaWrQKhMNxvPfjJ0MrpzGYnx6c_NWplLbgMudzrM_24yD5WMx8Gg9TGTVjb4_6K-AN5FlV0</recordid><startdate>201401</startdate><enddate>201401</enddate><creator>Ghadiri Moghaddam, Davood</creator><creator>Besant, Robert W.</creator><creator>Simonson, Carey J.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>201401</creationdate><title>Solution-side effectiveness for a liquid-to-air membrane energy exchanger used as a dehumidifier/regenerator</title><author>Ghadiri Moghaddam, Davood ; Besant, Robert W. ; Simonson, Carey J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c375t-19efec0d74018f3fe2fa5091ee29fe3df981373c389f3465f80d98d546327873</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Air conditioning. Ventilation</topic><topic>Air treatment</topic><topic>Applied sciences</topic><topic>Dehumidifier</topic><topic>Devices using thermal energy</topic><topic>Effectiveness</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Heat exchangers (included heat transformers, condensers, cooling towers)</topic><topic>Heating, air conditioning and ventilation</topic><topic>LAMEE</topic><topic>Regenerator</topic><topic>Salt solution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ghadiri Moghaddam, Davood</creatorcontrib><creatorcontrib>Besant, Robert W.</creatorcontrib><creatorcontrib>Simonson, Carey J.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>Applied energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ghadiri Moghaddam, Davood</au><au>Besant, Robert W.</au><au>Simonson, Carey J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Solution-side effectiveness for a liquid-to-air membrane energy exchanger used as a dehumidifier/regenerator</atitle><jtitle>Applied energy</jtitle><date>2014-01</date><risdate>2014</risdate><volume>113</volume><spage>872</spage><epage>882</epage><pages>872-882</pages><issn>0306-2619</issn><eissn>1872-9118</eissn><coden>APENDX</coden><abstract>•Liquid-to-air membrane energy exchangers are called LAMEEs in this paper.•For the first time, the solution-side (SS) effectiveness are introduced for LAMEEs.•The SS effectiveness is very important when a LAMEE is used as a regenerator.•Both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗.•The air-side and solution-side effectiveness values are different in most cases.
A liquid-to-air membrane energy exchanger (LAMEE) is an energy exchange device that transfers heat and moisture between air and salt solution streams through a semi-permeable membrane which is permeable for water vapor but impermeable for liquid water. LAMEEs have been used as a dehumidifier/regenerator in air-conditioning systems. In this paper, the solution-side effectiveness are presented for a small-scale single-panel LAMEE when it is used to regenerate the solution flow. The solution-side effectiveness are very important in regenerators where the main focus is on the salt solution, and the solution properties (i.e. solution outlet concentration) are important. The small-scale LAMEE is tested under air dehumidification and solution regeneration test conditions using a LiCl solution at one NTU (i.e. NTU=5) and three different Cr∗ values (Cr∗=2, 4 and 6). The results show that both the air-side and solution-side effectiveness of the LAMEE increase with Cr∗. The solution-side latent effectiveness is lower for the regenerator in comparison to the dehumidifier (e.g. 43% lower at Cr∗=6). Also, the numerical results for a small-scale LAMEE which were presented in literature are used in this paper to evaluate the solution-side effectiveness of the LAMEE under different test conditions. The numerical results show that the difference between the air-side and solution-side latent effectiveness are negligible. Therefore, the air-side latent effectiveness can be used to evaluate the solution-side latent effectiveness of LAMEEs.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.apenergy.2013.08.037</doi><tpages>11</tpages></addata></record> |
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| subjects | Air conditioning. Ventilation Air treatment Applied sciences Dehumidifier Devices using thermal energy Effectiveness Energy Energy. Thermal use of fuels Exact sciences and technology Heat exchangers (included heat transformers, condensers, cooling towers) Heating, air conditioning and ventilation LAMEE Regenerator Salt solution |
| title | Solution-side effectiveness for a liquid-to-air membrane energy exchanger used as a dehumidifier/regenerator |
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