An Experimental Study of Gas Borne Suspensions of Thermionic Emitters as M.H.D. Working Fluids
The use of gaseous suspensions of thermionically emitting particles as alternatives to alkali metal seeded gases for use as m.h.d. working fluids is discussed briefly. Theoretical relations proposed by Sodha & Bendor (1964) are used to show that suspensions of barium oxide in argon can have sign...
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| Veröffentlicht in: | Phil. Trans. Roy. Soc. London, Ser. A, 261: 490-5(July 6, 1967) Ser. A, 261: 490-5(July 6, 1967), 1967-07, Vol.261 (1123), p.490-495 |
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| container_end_page | 495 |
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| container_issue | 1123 |
| container_start_page | 490 |
| container_title | Phil. Trans. Roy. Soc. London, Ser. A, 261: 490-5(July 6, 1967) |
| container_volume | 261 |
| creator | Waldie, B. Fells, I. |
| description | The use of gaseous suspensions of thermionically emitting particles as alternatives to alkali metal seeded gases for use as
m.h.d. working fluids is discussed briefly. Theoretical relations proposed by Sodha & Bendor (1964) are used to show that
suspensions of barium oxide in argon can have significantly higher electrical conductivities than thermally ionized caesium-argon
mixtures at temperatures below about 2000 degrees K. This advantage is emphasized at pressures above atmospheric pressure.
Experimental studies to check the theoretically predicted conductivities are described. A technique has been developed for
the preparation of submicron suspensions of barium oxide and other alkali earth oxides in inert gases. A suspension of barium
oxide particles in argon has been shown to have a conductivity of 0$\cdot $1 mho/m at atmospheric pressure and 1600 degrees
K. This value is low, because of the relatively large average particle size, 0$\cdot $3 $\mu $m diameter, but is of the same
order as the theoretical conductivity for the experimental conditions. |
| doi_str_mv | 10.1098/rsta.1967.0017 |
| format | Article |
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m.h.d. working fluids is discussed briefly. Theoretical relations proposed by Sodha & Bendor (1964) are used to show that
suspensions of barium oxide in argon can have significantly higher electrical conductivities than thermally ionized caesium-argon
mixtures at temperatures below about 2000 degrees K. This advantage is emphasized at pressures above atmospheric pressure.
Experimental studies to check the theoretically predicted conductivities are described. A technique has been developed for
the preparation of submicron suspensions of barium oxide and other alkali earth oxides in inert gases. A suspension of barium
oxide particles in argon has been shown to have a conductivity of 0$\cdot $1 mho/m at atmospheric pressure and 1600 degrees
K. This value is low, because of the relatively large average particle size, 0$\cdot $3 $\mu $m diameter, but is of the same
order as the theoretical conductivity for the experimental conditions.</description><identifier>ISSN: 1364-503X</identifier><identifier>ISSN: 0080-4614</identifier><identifier>EISSN: 1471-2962</identifier><identifier>DOI: 10.1098/rsta.1967.0017</identifier><language>eng</language><publisher>United Kingdom: The Royal Society</publisher><subject>Alkali metals ; Argon ; Barium ; Chemical suspensions ; Conductivity ; EMISSION ; FLUIDS ; GASES ; GENERATORS ; M.H.D. Plant, Combustion Techniques and Seeding ; MAGNETOHYDRODYNAMICS ; MHD GENERATORS ; N32400 --Engineering--Energy Conversion ; Oxides ; Oxygen ; SUSPENSIONS ; THERMIONICS ; Work functions ; Working fluids</subject><ispartof>Phil. Trans. Roy. Soc. London, Ser. A, 261: 490-5(July 6, 1967), 1967-07, Vol.261 (1123), p.490-495</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/73515$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/73515$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,828,881,27901,27902,57992,57996,58225,58229</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/4278514$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Waldie, B.</creatorcontrib><creatorcontrib>Fells, I.</creatorcontrib><creatorcontrib>Univ. of Newcastle upon Tyne, Eng</creatorcontrib><title>An Experimental Study of Gas Borne Suspensions of Thermionic Emitters as M.H.D. Working Fluids</title><title>Phil. Trans. Roy. Soc. London, Ser. A, 261: 490-5(July 6, 1967)</title><description>The use of gaseous suspensions of thermionically emitting particles as alternatives to alkali metal seeded gases for use as
m.h.d. working fluids is discussed briefly. Theoretical relations proposed by Sodha & Bendor (1964) are used to show that
suspensions of barium oxide in argon can have significantly higher electrical conductivities than thermally ionized caesium-argon
mixtures at temperatures below about 2000 degrees K. This advantage is emphasized at pressures above atmospheric pressure.
Experimental studies to check the theoretically predicted conductivities are described. A technique has been developed for
the preparation of submicron suspensions of barium oxide and other alkali earth oxides in inert gases. A suspension of barium
oxide particles in argon has been shown to have a conductivity of 0$\cdot $1 mho/m at atmospheric pressure and 1600 degrees
K. This value is low, because of the relatively large average particle size, 0$\cdot $3 $\mu $m diameter, but is of the same
order as the theoretical conductivity for the experimental conditions.</description><subject>Alkali metals</subject><subject>Argon</subject><subject>Barium</subject><subject>Chemical suspensions</subject><subject>Conductivity</subject><subject>EMISSION</subject><subject>FLUIDS</subject><subject>GASES</subject><subject>GENERATORS</subject><subject>M.H.D. Plant, Combustion Techniques and Seeding</subject><subject>MAGNETOHYDRODYNAMICS</subject><subject>MHD GENERATORS</subject><subject>N32400 --Engineering--Energy Conversion</subject><subject>Oxides</subject><subject>Oxygen</subject><subject>SUSPENSIONS</subject><subject>THERMIONICS</subject><subject>Work functions</subject><subject>Working fluids</subject><issn>1364-503X</issn><issn>0080-4614</issn><issn>1471-2962</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1967</creationdate><recordtype>article</recordtype><recordid>eNp9UU1LxDAQLaKgrl49eAreWzNp0m5P4sd-CIqHXdGTIXYnNtptSpKi---NrBcvwsDM8N4b3swkyQnQDGg1Pnc-qAyqoswohXInOQBeQsqqgu3GOi94Kmj-vJ8cev8eGVAIdpC8XHZk8tWjM2vsgmrJIgyrDbGazJQnV9Z1SBaD77Hzxnb-B1g26NaxMTWZrE0I6DyJ3Ptsnt1k5Mm6D9O9kWk7mJU_Sva0aj0e_-ZR8jidLK_n6d3D7Pb68i5tGBuHtAJNGb7mWgOlGG2WKobAqtSclQVQ4JwjqFeoaCVQjVUuuCiR8gKw1nU-Ss62c60PRvraBKyb2nYd1kHGEWMBPJJOt6R3H6yTfdxZuY0scwEignQLNuat-TQOpbObaNnWBsPmp-mDkqwACcByySsaJRf_SuI_ZPQQ4mH_CKUe2lb2K51_A_e9hbs</recordid><startdate>19670706</startdate><enddate>19670706</enddate><creator>Waldie, B.</creator><creator>Fells, I.</creator><general>The Royal Society</general><scope>OTOTI</scope></search><sort><creationdate>19670706</creationdate><title>An Experimental Study of Gas Borne Suspensions of Thermionic Emitters as M.H.D. Working Fluids</title><author>Waldie, B. ; Fells, I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-h228t-91f02eb3ff100e5037a37a5e97f4276101444e1ab19095ea8a35457e0461ecfc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1967</creationdate><topic>Alkali metals</topic><topic>Argon</topic><topic>Barium</topic><topic>Chemical suspensions</topic><topic>Conductivity</topic><topic>EMISSION</topic><topic>FLUIDS</topic><topic>GASES</topic><topic>GENERATORS</topic><topic>M.H.D. Plant, Combustion Techniques and Seeding</topic><topic>MAGNETOHYDRODYNAMICS</topic><topic>MHD GENERATORS</topic><topic>N32400 --Engineering--Energy Conversion</topic><topic>Oxides</topic><topic>Oxygen</topic><topic>SUSPENSIONS</topic><topic>THERMIONICS</topic><topic>Work functions</topic><topic>Working fluids</topic><toplevel>online_resources</toplevel><creatorcontrib>Waldie, B.</creatorcontrib><creatorcontrib>Fells, I.</creatorcontrib><creatorcontrib>Univ. of Newcastle upon Tyne, Eng</creatorcontrib><collection>OSTI.GOV</collection><jtitle>Phil. Trans. Roy. Soc. London, Ser. A, 261: 490-5(July 6, 1967)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Waldie, B.</au><au>Fells, I.</au><aucorp>Univ. of Newcastle upon Tyne, Eng</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An Experimental Study of Gas Borne Suspensions of Thermionic Emitters as M.H.D. Working Fluids</atitle><jtitle>Phil. Trans. Roy. Soc. London, Ser. A, 261: 490-5(July 6, 1967)</jtitle><date>1967-07-06</date><risdate>1967</risdate><volume>261</volume><issue>1123</issue><spage>490</spage><epage>495</epage><pages>490-495</pages><issn>1364-503X</issn><issn>0080-4614</issn><eissn>1471-2962</eissn><abstract>The use of gaseous suspensions of thermionically emitting particles as alternatives to alkali metal seeded gases for use as
m.h.d. working fluids is discussed briefly. Theoretical relations proposed by Sodha & Bendor (1964) are used to show that
suspensions of barium oxide in argon can have significantly higher electrical conductivities than thermally ionized caesium-argon
mixtures at temperatures below about 2000 degrees K. This advantage is emphasized at pressures above atmospheric pressure.
Experimental studies to check the theoretically predicted conductivities are described. A technique has been developed for
the preparation of submicron suspensions of barium oxide and other alkali earth oxides in inert gases. A suspension of barium
oxide particles in argon has been shown to have a conductivity of 0$\cdot $1 mho/m at atmospheric pressure and 1600 degrees
K. This value is low, because of the relatively large average particle size, 0$\cdot $3 $\mu $m diameter, but is of the same
order as the theoretical conductivity for the experimental conditions.</abstract><cop>United Kingdom</cop><pub>The Royal Society</pub><doi>10.1098/rsta.1967.0017</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1364-503X |
| ispartof | Phil. Trans. Roy. Soc. London, Ser. A, 261: 490-5(July 6, 1967), 1967-07, Vol.261 (1123), p.490-495 |
| issn | 1364-503X 0080-4614 1471-2962 |
| language | eng |
| recordid | cdi_highwire_royalsociety_roypta_261_1123_490 |
| source | Jstor Complete Legacy; JSTOR Mathematics & Statistics |
| subjects | Alkali metals Argon Barium Chemical suspensions Conductivity EMISSION FLUIDS GASES GENERATORS M.H.D. Plant, Combustion Techniques and Seeding MAGNETOHYDRODYNAMICS MHD GENERATORS N32400 --Engineering--Energy Conversion Oxides Oxygen SUSPENSIONS THERMIONICS Work functions Working fluids |
| title | An Experimental Study of Gas Borne Suspensions of Thermionic Emitters as M.H.D. Working Fluids |
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