Heat exchangers made of polymer-bonded La(Fe,Si)13
We report on magnetocaloric properties of polymer-bonded La(Fe,Si)13 heat exchangers with respect to the grain size of the powder used and the pressure applied for compaction of plates. Quite remarkably, it was found that the values of the adiabatic temperature change of polymer-bonded plates are 10...
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| Veröffentlicht in: | Journal of applied physics 2014-05, Vol.115 (17) |
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| container_title | Journal of applied physics |
| container_volume | 115 |
| creator | Skokov, K. P. Karpenkov, D. Yu Kuz'min, M. D. Radulov, I. A. Gottschall, T. Kaeswurm, B. Fries, M. Gutfleisch, O. |
| description | We report on magnetocaloric properties of polymer-bonded La(Fe,Si)13 heat exchangers with respect to the grain size of the powder used and the pressure applied for compaction of plates. Quite remarkably, it was found that the values of the adiabatic temperature change of polymer-bonded plates are 10% higher than in the initial bulk material. A critical value of the pressure applied during the compaction was found. Exceeding this value leads to a drastic reduction of the magnetocaloric effect due to cracking and comminution of the initial 50–100 μm grains down to 1–10 μm fragments. Compacting the LaFe11.6Si1.4 powder with 5 wt. % of silver epoxy under an optimal pressure of 0.1 GPa resulted in the production of 0.6 mm-thick plates. These plates were subsequently stacked and glued together into a simple porous heat exchanger with straight 0.6 mm-width channels. |
| doi_str_mv | 10.1063/1.4868707 |
| format | Article |
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P. ; Karpenkov, D. Yu ; Kuz'min, M. D. ; Radulov, I. A. ; Gottschall, T. ; Kaeswurm, B. ; Fries, M. ; Gutfleisch, O.</creator><creatorcontrib>Skokov, K. P. ; Karpenkov, D. Yu ; Kuz'min, M. D. ; Radulov, I. A. ; Gottschall, T. ; Kaeswurm, B. ; Fries, M. ; Gutfleisch, O.</creatorcontrib><description>We report on magnetocaloric properties of polymer-bonded La(Fe,Si)13 heat exchangers with respect to the grain size of the powder used and the pressure applied for compaction of plates. Quite remarkably, it was found that the values of the adiabatic temperature change of polymer-bonded plates are 10% higher than in the initial bulk material. A critical value of the pressure applied during the compaction was found. Exceeding this value leads to a drastic reduction of the magnetocaloric effect due to cracking and comminution of the initial 50–100 μm grains down to 1–10 μm fragments. Compacting the LaFe11.6Si1.4 powder with 5 wt. % of silver epoxy under an optimal pressure of 0.1 GPa resulted in the production of 0.6 mm-thick plates. 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Exceeding this value leads to a drastic reduction of the magnetocaloric effect due to cracking and comminution of the initial 50–100 μm grains down to 1–10 μm fragments. Compacting the LaFe11.6Si1.4 powder with 5 wt. % of silver epoxy under an optimal pressure of 0.1 GPa resulted in the production of 0.6 mm-thick plates. These plates were subsequently stacked and glued together into a simple porous heat exchanger with straight 0.6 mm-width channels.</description><subject>Bonding</subject><subject>Comminution</subject><subject>Compacting</subject><subject>Heat exchangers</subject><subject>Magnetic properties</subject><subject>Polymers</subject><subject>Thick plates</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNotkEtLAzEURoMoOFYX_oMBNxacem8yk8dSSmuFARfqOsTkjrZ0HiZTsP_eSrv6NofvwGHsFmGGIMUjzkottQJ1xjIEbQpVVXDOMgCOhTbKXLKrlDYAiFqYjPEVuTGnX__tui-KKW9doLxv8qHf7luKxWffBQp57e6X9PC2nqK4ZheN2ya6Oe2EfSwX7_NVUb8-v8yf6sJzocdCmQZDxYUBaYT0rgTnS1OCJkSvBWnQwbkQyJVOGvCCk_RomiARqyCVmLC74-8Q-58dpdFu-l3sDkrLkSupK23EgZoeKR_7lCI1dojr1sW9RbD_SSzaUxLxB1mFT8w</recordid><startdate>20140507</startdate><enddate>20140507</enddate><creator>Skokov, K. P.</creator><creator>Karpenkov, D. 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A.</creatorcontrib><creatorcontrib>Gottschall, T.</creatorcontrib><creatorcontrib>Kaeswurm, B.</creatorcontrib><creatorcontrib>Fries, M.</creatorcontrib><creatorcontrib>Gutfleisch, O.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Skokov, K. P.</au><au>Karpenkov, D. Yu</au><au>Kuz'min, M. D.</au><au>Radulov, I. 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Compacting the LaFe11.6Si1.4 powder with 5 wt. % of silver epoxy under an optimal pressure of 0.1 GPa resulted in the production of 0.6 mm-thick plates. These plates were subsequently stacked and glued together into a simple porous heat exchanger with straight 0.6 mm-width channels.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4868707</doi></addata></record> |
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| ispartof | Journal of applied physics, 2014-05, Vol.115 (17) |
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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Bonding Comminution Compacting Heat exchangers Magnetic properties Polymers Thick plates |
| title | Heat exchangers made of polymer-bonded La(Fe,Si)13 |
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