Electrothermal Desiccant Regeneration Technique for Air Dehumidification
Adsorption dehumidification and drying equipment is essential general equipment for domestic and industrial use. The most commonly used type in industry is the compressed air adsorption dryer. The analysis results show that the heat loss of the traditional heat air regeneration system of the compres...
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| Veröffentlicht in: | Processes 2021-07, Vol.9 (7), p.1082 |
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| creator | Chen, Chih-Hao Kang, Yu-Hao Lu, Jing-Hung Hung, Ming-Lang Perng, Jyi-Ching Chen, Jiun-Jen |
| description | Adsorption dehumidification and drying equipment is essential general equipment for domestic and industrial use. The most commonly used type in industry is the compressed air adsorption dryer. The analysis results show that the heat loss of the traditional heat air regeneration system of the compressor dryer is 39.4%, and the exhaust waste heat is 32.4%. The actual use of heat energy for desiccant regeneration is only 28.2%. Therefore, this study uses an innovative electrothermal adsorbent unit (ETAU) to regenerate the desiccant. By directly heating the adsorbent, heat loss can be effectively improved. On the other hand, the composite arrangement of zeolite and activated alumina is used. The inlet compressed air is firstly treated by the activated alumina, which has a high adsorption capacity in the high relative humidity condition, then a zeolite is used as a second part to make the dew point reach –40 °C. In the regeneration step, the airflow direction is reversed, whereby the zeolite is regenerated by the ETAU, and the waste heat of the exhaust air is used to regenerate the activated alumina, which reduces the temperature of the exhaust air. Compared with the traditional heat air compressed air system, the two technologies can save about 27% energy in total. |
| doi_str_mv | 10.3390/pr9071082 |
| format | Article |
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The most commonly used type in industry is the compressed air adsorption dryer. The analysis results show that the heat loss of the traditional heat air regeneration system of the compressor dryer is 39.4%, and the exhaust waste heat is 32.4%. The actual use of heat energy for desiccant regeneration is only 28.2%. Therefore, this study uses an innovative electrothermal adsorbent unit (ETAU) to regenerate the desiccant. By directly heating the adsorbent, heat loss can be effectively improved. On the other hand, the composite arrangement of zeolite and activated alumina is used. The inlet compressed air is firstly treated by the activated alumina, which has a high adsorption capacity in the high relative humidity condition, then a zeolite is used as a second part to make the dew point reach –40 °C. In the regeneration step, the airflow direction is reversed, whereby the zeolite is regenerated by the ETAU, and the waste heat of the exhaust air is used to regenerate the activated alumina, which reduces the temperature of the exhaust air. Compared with the traditional heat air compressed air system, the two technologies can save about 27% energy in total.</description><identifier>ISSN: 2227-9717</identifier><identifier>EISSN: 2227-9717</identifier><identifier>DOI: 10.3390/pr9071082</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Adhesives ; Adsorbents ; Adsorption ; Air flow ; Air temperature ; Alumina ; Aluminum oxide ; Compressed air ; Dehumidification ; Desiccants ; Dew point ; Drying ; Energy consumption ; Exhaust systems ; Heat conductivity ; Heat loss ; Heating ; Humidity ; Industrial applications ; Methods ; Regeneration ; Relative humidity ; Washers & dryers ; Waste heat ; Zeolites</subject><ispartof>Processes, 2021-07, Vol.9 (7), p.1082</ispartof><rights>2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c292t-63186e9c969e64cd20f3bddd5922d8430f9b18be21d5bacbc9c34eee18ec395b3</citedby><cites>FETCH-LOGICAL-c292t-63186e9c969e64cd20f3bddd5922d8430f9b18be21d5bacbc9c34eee18ec395b3</cites><orcidid>0000-0003-4227-7705 ; 0000-0002-4737-0207</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Chen, Chih-Hao</creatorcontrib><creatorcontrib>Kang, Yu-Hao</creatorcontrib><creatorcontrib>Lu, Jing-Hung</creatorcontrib><creatorcontrib>Hung, Ming-Lang</creatorcontrib><creatorcontrib>Perng, Jyi-Ching</creatorcontrib><creatorcontrib>Chen, Jiun-Jen</creatorcontrib><title>Electrothermal Desiccant Regeneration Technique for Air Dehumidification</title><title>Processes</title><description>Adsorption dehumidification and drying equipment is essential general equipment for domestic and industrial use. The most commonly used type in industry is the compressed air adsorption dryer. The analysis results show that the heat loss of the traditional heat air regeneration system of the compressor dryer is 39.4%, and the exhaust waste heat is 32.4%. The actual use of heat energy for desiccant regeneration is only 28.2%. Therefore, this study uses an innovative electrothermal adsorbent unit (ETAU) to regenerate the desiccant. By directly heating the adsorbent, heat loss can be effectively improved. On the other hand, the composite arrangement of zeolite and activated alumina is used. The inlet compressed air is firstly treated by the activated alumina, which has a high adsorption capacity in the high relative humidity condition, then a zeolite is used as a second part to make the dew point reach –40 °C. In the regeneration step, the airflow direction is reversed, whereby the zeolite is regenerated by the ETAU, and the waste heat of the exhaust air is used to regenerate the activated alumina, which reduces the temperature of the exhaust air. Compared with the traditional heat air compressed air system, the two technologies can save about 27% energy in total.</description><subject>Adhesives</subject><subject>Adsorbents</subject><subject>Adsorption</subject><subject>Air flow</subject><subject>Air temperature</subject><subject>Alumina</subject><subject>Aluminum oxide</subject><subject>Compressed air</subject><subject>Dehumidification</subject><subject>Desiccants</subject><subject>Dew point</subject><subject>Drying</subject><subject>Energy consumption</subject><subject>Exhaust systems</subject><subject>Heat conductivity</subject><subject>Heat loss</subject><subject>Heating</subject><subject>Humidity</subject><subject>Industrial applications</subject><subject>Methods</subject><subject>Regeneration</subject><subject>Relative humidity</subject><subject>Washers & dryers</subject><subject>Waste heat</subject><subject>Zeolites</subject><issn>2227-9717</issn><issn>2227-9717</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpNkEtPwzAQhC0EElXpgX8QiROHgB9xYh-rUihSJSRUzla83hBXeWEnB_49gSLEXmYPn2Z3hpBrRu-E0PR-CJoWjCp-Rhac8yLVBSvO_-2XZBXjkc6jmVAyX5DdtkEYQz_WGNqySR4weoCyG5NXfMcOQzn6vksOCHXnPyZMqj4kax9msJ5a73zl4Qe5IhdV2URc_eqSvD1uD5tdun95et6s9ylwzcc0F0zlqEHnGvMMHKeVsM45qTl3KhO00pYpi5w5aUuwoEFkiMgUgtDSiiW5OfkOoZ__iaM59lPo5pOGS5nN8RkrZur2REHoYwxYmSH4tgyfhlHz3ZX560p8AYaHXFI</recordid><startdate>20210701</startdate><enddate>20210701</enddate><creator>Chen, Chih-Hao</creator><creator>Kang, Yu-Hao</creator><creator>Lu, Jing-Hung</creator><creator>Hung, Ming-Lang</creator><creator>Perng, Jyi-Ching</creator><creator>Chen, Jiun-Jen</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>LK8</scope><scope>M7P</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><orcidid>https://orcid.org/0000-0003-4227-7705</orcidid><orcidid>https://orcid.org/0000-0002-4737-0207</orcidid></search><sort><creationdate>20210701</creationdate><title>Electrothermal Desiccant Regeneration Technique for Air Dehumidification</title><author>Chen, Chih-Hao ; Kang, Yu-Hao ; Lu, Jing-Hung ; Hung, Ming-Lang ; Perng, Jyi-Ching ; Chen, Jiun-Jen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c292t-63186e9c969e64cd20f3bddd5922d8430f9b18be21d5bacbc9c34eee18ec395b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Adhesives</topic><topic>Adsorbents</topic><topic>Adsorption</topic><topic>Air flow</topic><topic>Air temperature</topic><topic>Alumina</topic><topic>Aluminum oxide</topic><topic>Compressed air</topic><topic>Dehumidification</topic><topic>Desiccants</topic><topic>Dew point</topic><topic>Drying</topic><topic>Energy consumption</topic><topic>Exhaust systems</topic><topic>Heat conductivity</topic><topic>Heat loss</topic><topic>Heating</topic><topic>Humidity</topic><topic>Industrial applications</topic><topic>Methods</topic><topic>Regeneration</topic><topic>Relative humidity</topic><topic>Washers & dryers</topic><topic>Waste heat</topic><topic>Zeolites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Chih-Hao</creatorcontrib><creatorcontrib>Kang, Yu-Hao</creatorcontrib><creatorcontrib>Lu, Jing-Hung</creatorcontrib><creatorcontrib>Hung, Ming-Lang</creatorcontrib><creatorcontrib>Perng, Jyi-Ching</creatorcontrib><creatorcontrib>Chen, Jiun-Jen</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>Materials Research Database</collection><collection>Materials Science Database</collection><collection>ProQuest Biological Science Collection</collection><collection>Biological Science Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><jtitle>Processes</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Chih-Hao</au><au>Kang, Yu-Hao</au><au>Lu, Jing-Hung</au><au>Hung, Ming-Lang</au><au>Perng, Jyi-Ching</au><au>Chen, Jiun-Jen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Electrothermal Desiccant Regeneration Technique for Air Dehumidification</atitle><jtitle>Processes</jtitle><date>2021-07-01</date><risdate>2021</risdate><volume>9</volume><issue>7</issue><spage>1082</spage><pages>1082-</pages><issn>2227-9717</issn><eissn>2227-9717</eissn><abstract>Adsorption dehumidification and drying equipment is essential general equipment for domestic and industrial use. 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In the regeneration step, the airflow direction is reversed, whereby the zeolite is regenerated by the ETAU, and the waste heat of the exhaust air is used to regenerate the activated alumina, which reduces the temperature of the exhaust air. Compared with the traditional heat air compressed air system, the two technologies can save about 27% energy in total.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/pr9071082</doi><orcidid>https://orcid.org/0000-0003-4227-7705</orcidid><orcidid>https://orcid.org/0000-0002-4737-0207</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Adhesives Adsorbents Adsorption Air flow Air temperature Alumina Aluminum oxide Compressed air Dehumidification Desiccants Dew point Drying Energy consumption Exhaust systems Heat conductivity Heat loss Heating Humidity Industrial applications Methods Regeneration Relative humidity Washers & dryers Waste heat Zeolites |
| title | Electrothermal Desiccant Regeneration Technique for Air Dehumidification |
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