Molten chloride technology pathway to meet the U.S. DOE sunshot initiative with Gen3 CSP
Third-generation (Gen3) concentrating solar power (CSP) technologies require a thermally stable and inexpensive fluid to be used for heat transfer and thermal energy storage. For Gen3 CSP plants, a molten salt composed of MgCl2 – KCl – NaCl is a new candidate, but it is familiar enough to plants wit...
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| creator | Vidal, Judith C. Klammer, Noah |
| description | Third-generation (Gen3) concentrating solar power (CSP) technologies require a thermally stable and inexpensive fluid to be used for heat transfer and thermal energy storage. For Gen3 CSP plants, a molten salt composed of MgCl2 – KCl – NaCl is a new candidate, but it is familiar enough to plants with existing molten-salt systems. To determine the best composition for the heat-transfer fluid, we mixed nine different ratios of the salts, dry/purified them following strict protocols, and tested them with a differential scanning calorimeter and a thermogravimetric analyzer. Our results showed that the lowest melting and solidification temperature of 385°C ± 1°C was determined for the eutectic composition 44.7 MgCl2 – 25.8 KCl – 29.4 NaCl (mol.%). We determined that improper handling and preparation of the salt mixture highly affects its thermal properties because of moisture absorption. Preparation standards—particularly the dehydration of hydrous MgCl2—merit further development. |
| doi_str_mv | 10.1063/1.5117601 |
| format | Conference Proceeding |
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(NREL), Golden, CO (United States) ; Richter, Christoph</creatorcontrib><description>Third-generation (Gen3) concentrating solar power (CSP) technologies require a thermally stable and inexpensive fluid to be used for heat transfer and thermal energy storage. For Gen3 CSP plants, a molten salt composed of MgCl2 – KCl – NaCl is a new candidate, but it is familiar enough to plants with existing molten-salt systems. To determine the best composition for the heat-transfer fluid, we mixed nine different ratios of the salts, dry/purified them following strict protocols, and tested them with a differential scanning calorimeter and a thermogravimetric analyzer. Our results showed that the lowest melting and solidification temperature of 385°C ± 1°C was determined for the eutectic composition 44.7 MgCl2 – 25.8 KCl – 29.4 NaCl (mol.%). We determined that improper handling and preparation of the salt mixture highly affects its thermal properties because of moisture absorption. 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(NREL), Golden, CO (United States)</creatorcontrib><title>Molten chloride technology pathway to meet the U.S. DOE sunshot initiative with Gen3 CSP</title><title>AIP Conference Proceedings</title><description>Third-generation (Gen3) concentrating solar power (CSP) technologies require a thermally stable and inexpensive fluid to be used for heat transfer and thermal energy storage. For Gen3 CSP plants, a molten salt composed of MgCl2 – KCl – NaCl is a new candidate, but it is familiar enough to plants with existing molten-salt systems. To determine the best composition for the heat-transfer fluid, we mixed nine different ratios of the salts, dry/purified them following strict protocols, and tested them with a differential scanning calorimeter and a thermogravimetric analyzer. Our results showed that the lowest melting and solidification temperature of 385°C ± 1°C was determined for the eutectic composition 44.7 MgCl2 – 25.8 KCl – 29.4 NaCl (mol.%). We determined that improper handling and preparation of the salt mixture highly affects its thermal properties because of moisture absorption. Preparation standards—particularly the dehydration of hydrous MgCl2—merit further development.</description><subject>associated liquids</subject><subject>concentrated solar power</subject><subject>Dehydration</subject><subject>Differential scanning calorimetry</subject><subject>Energy storage</subject><subject>Eutectic composition</subject><subject>Magnesium chloride</subject><subject>materials properties</subject><subject>Moisture absorption</subject><subject>Molten salts</subject><subject>OTHER INSTRUMENTATION</subject><subject>Potassium chloride</subject><subject>SOLAR ENERGY</subject><subject>Solidification</subject><subject>Thermal energy</subject><subject>thermal instruments</subject><subject>Thermal stability</subject><subject>Thermodynamic properties</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2019</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNp9kU1LAzEQhoMoWKsH_0HQm7BrJh_7cZRaq6BUqIXeQprNuinbZN1NW_rv3dKCN09zeeZlnncQugUSA0nYI8QCIE0InKEBCAFRmkByjgaE5DyinC0u0VXXrQiheZpmA7T48HUwDuuq9q0tDA5GV87X_nuPGxWqndrj4PHamIBDZfA8nsX4eTrG3cZ1lQ_YOhusCnZr8M6GCk-MY3g0-7xGF6WqO3NzmkM0fxl_jV6j9-nkbfT0HmkmRIgElDzLIGOKCpYvTVropUgEUM1Acaq4ykue5EtNSFmUCTCVF6kSRV7kWWaYYkN0d8z1XbCy0_YgoL1zRgfZN9Br8h66P0JN6382pgty5Tet6--SlCacc5pS6KmHI3VI6ZW8k01r16rdy61vJchTtbIpyv9gIPLwi78F9guYoXky</recordid><startdate>20190725</startdate><enddate>20190725</enddate><creator>Vidal, Judith C.</creator><creator>Klammer, Noah</creator><general>American Institute of Physics</general><general>Melville, NY: AIP Publishing</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000000205913250</orcidid><orcidid>https://orcid.org/0000000181813182</orcidid></search><sort><creationdate>20190725</creationdate><title>Molten chloride technology pathway to meet the U.S. DOE sunshot initiative with Gen3 CSP</title><author>Vidal, Judith C. ; Klammer, Noah</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c355t-51f488183a2539be7dcb56512c31a42a4a9f469bc00fdf613a9d7a5d9d988e3a3</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2019</creationdate><topic>associated liquids</topic><topic>concentrated solar power</topic><topic>Dehydration</topic><topic>Differential scanning calorimetry</topic><topic>Energy storage</topic><topic>Eutectic composition</topic><topic>Magnesium chloride</topic><topic>materials properties</topic><topic>Moisture absorption</topic><topic>Molten salts</topic><topic>OTHER INSTRUMENTATION</topic><topic>Potassium chloride</topic><topic>SOLAR ENERGY</topic><topic>Solidification</topic><topic>Thermal energy</topic><topic>thermal instruments</topic><topic>Thermal stability</topic><topic>Thermodynamic properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vidal, Judith C.</creatorcontrib><creatorcontrib>Klammer, Noah</creatorcontrib><creatorcontrib>National Renewable Energy Lab. (NREL), Golden, CO (United States)</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vidal, Judith C.</au><au>Klammer, Noah</au><au>Richter, Christoph</au><aucorp>National Renewable Energy Lab. (NREL), Golden, CO (United States)</aucorp><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Molten chloride technology pathway to meet the U.S. DOE sunshot initiative with Gen3 CSP</atitle><btitle>AIP Conference Proceedings</btitle><date>2019-07-25</date><risdate>2019</risdate><volume>2126</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><coden>APCPCS</coden><abstract>Third-generation (Gen3) concentrating solar power (CSP) technologies require a thermally stable and inexpensive fluid to be used for heat transfer and thermal energy storage. For Gen3 CSP plants, a molten salt composed of MgCl2 – KCl – NaCl is a new candidate, but it is familiar enough to plants with existing molten-salt systems. To determine the best composition for the heat-transfer fluid, we mixed nine different ratios of the salts, dry/purified them following strict protocols, and tested them with a differential scanning calorimeter and a thermogravimetric analyzer. Our results showed that the lowest melting and solidification temperature of 385°C ± 1°C was determined for the eutectic composition 44.7 MgCl2 – 25.8 KCl – 29.4 NaCl (mol.%). We determined that improper handling and preparation of the salt mixture highly affects its thermal properties because of moisture absorption. Preparation standards—particularly the dehydration of hydrous MgCl2—merit further development.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.5117601</doi><tpages>9</tpages><orcidid>https://orcid.org/0000000205913250</orcidid><orcidid>https://orcid.org/0000000181813182</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP Conference Proceedings, 2019, Vol.2126 (1) |
| issn | 0094-243X 1551-7616 |
| language | eng |
| recordid | cdi_scitation_primary_10_1063_1_5117601 |
| source | AIP Journals Complete |
| subjects | associated liquids concentrated solar power Dehydration Differential scanning calorimetry Energy storage Eutectic composition Magnesium chloride materials properties Moisture absorption Molten salts OTHER INSTRUMENTATION Potassium chloride SOLAR ENERGY Solidification Thermal energy thermal instruments Thermal stability Thermodynamic properties |
| title | Molten chloride technology pathway to meet the U.S. DOE sunshot initiative with Gen3 CSP |
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