CA2188805A1 - Gas supply arrangement for high-temperature components - Google Patents
Gas supply arrangement for high-temperature componentsInfo
- Publication number
- CA2188805A1 CA2188805A1 CA 2188805 CA2188805A CA2188805A1 CA 2188805 A1 CA2188805 A1 CA 2188805A1 CA 2188805 CA2188805 CA 2188805 CA 2188805 A CA2188805 A CA 2188805A CA 2188805 A1 CA2188805 A1 CA 2188805A1
- Authority
- CA
- Canada
- Prior art keywords
- temperature
- temperature component
- components
- elements
- accordance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/04—Constructions of heat-exchange apparatus characterised by the selection of particular materials of ceramic; of concrete; of natural stone
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Gasket Seals (AREA)
Abstract
The invention concerns a high-temperature component (1) made from ceramic material with channels through which gases can flow and with connection elements (2, 2', 3, 3') provided to allow the supply and discharge of gases; the connection elements (2, 2', 3, 3') are forced onto the surfaces of the high-temperature components (1) by mechanical contact pressure. It is proposed that the contact pressure should be applied by means which are substantially not adversely affected by high temperatures in the hightemperature component (1).
Description
1~17~1~96 , 3: 2~ 2~24144040 SPEI~CER ~ FRANK PA~E ~2 ~iLE. rHls ~18~805 TRANSLAriQN
9~/~7~3 ~CT/EP96/~0727 Dock~t AE~ 2710 Tran~ on of Gsr~ tex~
SUD~1~ ~rr~ngement for Hi~h-Temper~ture Co~ponents De~r~ tion The invention relate~ to a ga~ supply ~r~ng~ment for hlgh-temperaturQ ~omponent~ in accordan~e with th~ Pream~le S to ~lai~ 1.
For high-te~peratu~e components æuch as heat exchangers wlth countercurrent flow-thr~ugh, a ga~-tight separaticn of the g~s aha~nber6 ~u~t be en~ur~d~ in particular if one o~ the gas flows c~antain~ comb~s~i~le ga~e~. If these components ar~ ~ade fro~ a cer~ic ~aterial, ~ gluing or sintering-on of the conn~t.l ng elements must ~e ruled out, becau~e the dlff~re~t te~per~r~s in the ~mponents re~ult in ~xp~n~ion~, whi~h lead to ~echani~al ~tresses in the cera~i~
co~pon~nt~ ~lnd, a~ a ~Qult of this, cracks in the component~
cannot ~e nlled o~t. Thus, it i~ i~portant that no ~dditlonal 6~resses are ~enerated through thi~ ~oining of connectln~ element~ to the high-temperature ~o~ponents. T~e sintering-on of large-surface connection ele~ents when ctacklng ~uel ~ells ~"~tacks"), fer examp}e, to ad~itional ZO stre~c4~ in the 6t~ck, which can le~d to crack~ in the stack ORI~IIIAL DO~UMEN~S
Jlg'3L1 13: ~ 2~2~14404~ ~PENCER ~ FRANK P~E 03 21 888~5 113 pcT/~p9 6~o o7 a 7 ox th- CG.u~r Lion area for the gas ~upply line~, partict~l~rly durlng the activation and ~hut-down of the stackEi. This probl~ i~ not solved, eY~n with good m~tchin~ of ~h~ therm~l exp~nsion coef fi~ient wi'çh the ~ oined ~aterials ~e~ause the heat~n~ up and cooling down of lars~e ~urface~ doe~ no~ take placo wit~ en~ugh urll formity .
rt ~ ~ known to press connection elements me~hanically Ag~inat heat ~xchanger component~ with ~he ~id of ~ealing olem~nts ~nd to make the~e c~ntact pres~ure forces largely indep~n~ent of the heat expanEiions o~ the heat exchan~er ~y using aprinq element~. ~owever, such arrange~ents ~re not ~uit~bla ~or components oper~ting with high ~emperature~ o~
up to approximately 1000 C, ~or which the gas ~upply conr~ction element~; al~o ha~e t~3mperatu~e~ t~at prec~ude the d~re~t ~e of metallic ~prings.
~t 1~ the ob~ect of the invention to show an arrangement wbor~ connections on the ~o~ponent~s can be designe~ such that they ~re gas-tight at hlgh teTnpera~ures and for an op~ratlonal per~od of ceve~al year~.
ZG ~ls ob~ect is met with the features of the ~h~r~cterizirlg part o~ Claim ~ urther impro~re~nent~ of ~he ln~ention ar~ contalned in the dependen~ claim~.
The inven~ion i~ also suitable for gas-tig~t ¢onne~tion~
be~ween components, which are ~ j ected ~o high ~emperature i~il7/'1~6 1~: 22 20~4144~140 SPENCEF? & FRA~IK PAGE el4 ~0 ~ 7113 PC~P9CJ00727 SuCh component5 can be fl~nges ~or lines or valve~ or even oth~r ~onn~tion elQments for heat ex¢hangers or fuel ~ell~
I~ ~6 e~ential to tbe ln~ention th~t the ~ea~ is made fro~ at least one material that i~ plastic at the operdtiny te~perature and which retains it~ characteristic feature~ at high temp~ratuxe~, even when a~ed upon by the proce~s ga ~h~ iB conducted in the line ~y~tem and mu~t be prevented by tho seal fro~ exiting to the outsi~e area.
Exafflples Of the in~ent~on are expl~ined in ~he following W~t~ the Ald of ~e drAwing.
Shown he~e are:
Pigu~ 1 A ~ro~s se~tion through a high-tempera~re component with connection ele~ents;
Figure 2 A connection e~e~ent with metal casing, F~gure 3 A ~tack of different ce~ponent~ for the high-te~p~rat~e proce~s~ng te~hnique;
Figure 4 The seallnr~ And insul~tion of fuel cell~;
Pigure 5 The arr~ngement of ~onnection elements for two each component~, Figure ~ A ~peclal design for t~e conne~tion elements, with ~e~lcircul~r shape in ~he crocs section.
In accordance with the inv~n~ion, the component~ ee Flgur~ l~ and the connectlon ~l~m~nts 2, 2~, 3 and 3' ~re thermally in6ulated to the point tna~ out~i~e of this thermal l~fl,~l9g~ 13:22 202.1~ 4~ SPENCER ~; FR~IK P~iE 05 ~0 ~6~271~3 PC~ePgC~00727 in~ulation 4, te~p~ratureo occur th~t are not damaging to m~tallic springs 7. Thi~ inner thermal insula~ion 4, for ~x~4ple, rsduces a temper~ture of lO00 C on the ln~lde of t~ componene~ l to 200 C on the outsi~e of the inæulation.
Th~ ~orc~ for pressing the connection elements agai~st the co~p4nents are tranæmitted ~ia thermal in~ulating ele~ent~ 4 and wlth the aid o~ tensioning devices ~.
W~th the aid o~ prestre~ed æpring~ 7, the ten~i~ning devlceæ pre~ the the~al insul~ting ~le~nts 4 on ~he side aga~nBt the conn~ctlon elements 2, 2', 3, 3' for the various g~
In order to i~prove the ~eal between the connection elo~enta ~o~a3 the high-tRmperatur~ component 1, it is preferable to use s~als 5, ma~e of a substance th~t læ
plastic at high temp~rat~es. ~he insulating æ~bstance i~
appl$ed in a particularly a~ant~geouæ ~anner to the level ~eal~ng æurf~ce~ 8 ~nd ~an e~en out changes in the spacing betw~en high-te~perature co~ponent and connection ele~ent~
whlle 1 t ls in the plastic ætate . The thermal insulation can 20 al~o be applled at the corners ~ h the aid of additional ln~ulation element.
In anc~h~r adYantageou~ ~odi~ent of the inven~ion, the contact pressure forces are applied by ~h~s pressure dif~erential ~tween the pr~squre in the Eipdc e outside of ~he 10~17/lg~6 13: 22 ~024144040 SPEN~E~ ~ FRANK PAGE 06 ~0 ~/27113 PCTtBP96/00727 ~nn~r thermal lnsulatlon and the pres~u~e on the in~ide of t~e co~ponent~ ee Figure 2).
In thls ca~e, t~e pre~sure P1, for ~xample, i5 approxim~ely 2 105 P~ and the pre~ur~ P7 ~ 1 ~ 105 Pa.
Tha high-temperatur~ component, including the ~onnec~ion compon~nt~ and insulating elements, is held in~ide a metal ca~ing 11 by ~upports 14. Thi~ metal c~ing is lined ~gain on th~ ~n~ide with an ou~er thermal in~ulating elemen~. The ~u~b~~ 14 have openlngs, so that the g~ pre~ure P2 ~n act upon all o~de~ o~ the inside arrangement of component~
~nd ~o that a r~l~able seali~g tak~s pla~e.
Components can be ~tacked ~o form column~ ~nd the ~tacks can be compr~ssed in the previou~ly deæ~ri~ed way, as shown ~n Figure 3.
In a~ordance wlth another inventive concept, ~h~
co~ponents for the varied functione are provided with equal and ~atching surfa~eQ, æo that a column of, for example, heat ~ -hAngers, afterburner~, reformer~ and gas di~trlbu~ors i~
formed. As a result o~ this, high-loæ~ pipelines between the ~o~ponent~ and expen~l~e thermal insulation are avoided.
Th~ ~pace out~ide of the inner therxaL in~ula~ion 4, 9, ~h~r~ th~ ten~ioning ele~ntæ, including the ~pring~ 7, are loc~ted i~ ~losed of~ ~o the æurroundlng are~ by a ~e~ond, out~r ther~l insulA~ion. It i8 adviæ~ this outer 1~,'17~1~g~ 2 20~41~404Q SPENCER ~ FRANK PA~E 0~
21 8880~
7113 PCT~SP96/00727 then~l in~ulation i8 bl~nked off to the out~aide ~y ~ metal ac~et, whl~h ab60rb~ tl~e presQure ln the ~pace between ~h~
innsr an~ the outsr tl~er~al ln~ulation. Fresh air c~n be oonducted for the prewarming throllgh the space ~etween the 5 ~ n~ the outer insul~tion.
Wh~n us~nq the inventi~e concept for sta~ks, the ~ealing ele~ents that make dire~t ~onta¢t with the stacks are pro~uc~, ac~ordlng t~ the lnvention, from a materi~l that do~s not ¢on~u¢t ions or electron~ (see ~igure 4). ~ther ~ling u~terial ~hat ie p~stlc at h~gh temperatures ~an then be appliRd t~ t~s~ ~ealing elements. This ~yp~ of seal iB nece~sAry, particularly for hydrogen-containing connection el~ents.
For a column having sever~l co~ponents, i~ ~an, ~ccordlng to the ln~sntion, be useful ~o pro~ide a connection el~nt 14 for ~ore ~han one ~omponent ~ lgure 5~.
The profile3 for th~ connection ele~ents ~an be conflgure~ as deslrQd, that ls to ~ay a reotangular or semi-clrcular de~ign (Flgure ~) .
9~/~7~3 ~CT/EP96/~0727 Dock~t AE~ 2710 Tran~ on of Gsr~ tex~
SUD~1~ ~rr~ngement for Hi~h-Temper~ture Co~ponents De~r~ tion The invention relate~ to a ga~ supply ~r~ng~ment for hlgh-temperaturQ ~omponent~ in accordan~e with th~ Pream~le S to ~lai~ 1.
For high-te~peratu~e components æuch as heat exchangers wlth countercurrent flow-thr~ugh, a ga~-tight separaticn of the g~s aha~nber6 ~u~t be en~ur~d~ in particular if one o~ the gas flows c~antain~ comb~s~i~le ga~e~. If these components ar~ ~ade fro~ a cer~ic ~aterial, ~ gluing or sintering-on of the conn~t.l ng elements must ~e ruled out, becau~e the dlff~re~t te~per~r~s in the ~mponents re~ult in ~xp~n~ion~, whi~h lead to ~echani~al ~tresses in the cera~i~
co~pon~nt~ ~lnd, a~ a ~Qult of this, cracks in the component~
cannot ~e nlled o~t. Thus, it i~ i~portant that no ~dditlonal 6~resses are ~enerated through thi~ ~oining of connectln~ element~ to the high-temperature ~o~ponents. T~e sintering-on of large-surface connection ele~ents when ctacklng ~uel ~ells ~"~tacks"), fer examp}e, to ad~itional ZO stre~c4~ in the 6t~ck, which can le~d to crack~ in the stack ORI~IIIAL DO~UMEN~S
Jlg'3L1 13: ~ 2~2~14404~ ~PENCER ~ FRANK P~E 03 21 888~5 113 pcT/~p9 6~o o7 a 7 ox th- CG.u~r Lion area for the gas ~upply line~, partict~l~rly durlng the activation and ~hut-down of the stackEi. This probl~ i~ not solved, eY~n with good m~tchin~ of ~h~ therm~l exp~nsion coef fi~ient wi'çh the ~ oined ~aterials ~e~ause the heat~n~ up and cooling down of lars~e ~urface~ doe~ no~ take placo wit~ en~ugh urll formity .
rt ~ ~ known to press connection elements me~hanically Ag~inat heat ~xchanger component~ with ~he ~id of ~ealing olem~nts ~nd to make the~e c~ntact pres~ure forces largely indep~n~ent of the heat expanEiions o~ the heat exchan~er ~y using aprinq element~. ~owever, such arrange~ents ~re not ~uit~bla ~or components oper~ting with high ~emperature~ o~
up to approximately 1000 C, ~or which the gas ~upply conr~ction element~; al~o ha~e t~3mperatu~e~ t~at prec~ude the d~re~t ~e of metallic ~prings.
~t 1~ the ob~ect of the invention to show an arrangement wbor~ connections on the ~o~ponent~s can be designe~ such that they ~re gas-tight at hlgh teTnpera~ures and for an op~ratlonal per~od of ceve~al year~.
ZG ~ls ob~ect is met with the features of the ~h~r~cterizirlg part o~ Claim ~ urther impro~re~nent~ of ~he ln~ention ar~ contalned in the dependen~ claim~.
The inven~ion i~ also suitable for gas-tig~t ¢onne~tion~
be~ween components, which are ~ j ected ~o high ~emperature i~il7/'1~6 1~: 22 20~4144~140 SPENCEF? & FRA~IK PAGE el4 ~0 ~ 7113 PC~P9CJ00727 SuCh component5 can be fl~nges ~or lines or valve~ or even oth~r ~onn~tion elQments for heat ex¢hangers or fuel ~ell~
I~ ~6 e~ential to tbe ln~ention th~t the ~ea~ is made fro~ at least one material that i~ plastic at the operdtiny te~perature and which retains it~ characteristic feature~ at high temp~ratuxe~, even when a~ed upon by the proce~s ga ~h~ iB conducted in the line ~y~tem and mu~t be prevented by tho seal fro~ exiting to the outsi~e area.
Exafflples Of the in~ent~on are expl~ined in ~he following W~t~ the Ald of ~e drAwing.
Shown he~e are:
Pigu~ 1 A ~ro~s se~tion through a high-tempera~re component with connection ele~ents;
Figure 2 A connection e~e~ent with metal casing, F~gure 3 A ~tack of different ce~ponent~ for the high-te~p~rat~e proce~s~ng te~hnique;
Figure 4 The seallnr~ And insul~tion of fuel cell~;
Pigure 5 The arr~ngement of ~onnection elements for two each component~, Figure ~ A ~peclal design for t~e conne~tion elements, with ~e~lcircul~r shape in ~he crocs section.
In accordance with the inv~n~ion, the component~ ee Flgur~ l~ and the connectlon ~l~m~nts 2, 2~, 3 and 3' ~re thermally in6ulated to the point tna~ out~i~e of this thermal l~fl,~l9g~ 13:22 202.1~ 4~ SPENCER ~; FR~IK P~iE 05 ~0 ~6~271~3 PC~ePgC~00727 in~ulation 4, te~p~ratureo occur th~t are not damaging to m~tallic springs 7. Thi~ inner thermal insula~ion 4, for ~x~4ple, rsduces a temper~ture of lO00 C on the ln~lde of t~ componene~ l to 200 C on the outsi~e of the inæulation.
Th~ ~orc~ for pressing the connection elements agai~st the co~p4nents are tranæmitted ~ia thermal in~ulating ele~ent~ 4 and wlth the aid o~ tensioning devices ~.
W~th the aid o~ prestre~ed æpring~ 7, the ten~i~ning devlceæ pre~ the the~al insul~ting ~le~nts 4 on ~he side aga~nBt the conn~ctlon elements 2, 2', 3, 3' for the various g~
In order to i~prove the ~eal between the connection elo~enta ~o~a3 the high-tRmperatur~ component 1, it is preferable to use s~als 5, ma~e of a substance th~t læ
plastic at high temp~rat~es. ~he insulating æ~bstance i~
appl$ed in a particularly a~ant~geouæ ~anner to the level ~eal~ng æurf~ce~ 8 ~nd ~an e~en out changes in the spacing betw~en high-te~perature co~ponent and connection ele~ent~
whlle 1 t ls in the plastic ætate . The thermal insulation can 20 al~o be applled at the corners ~ h the aid of additional ln~ulation element.
In anc~h~r adYantageou~ ~odi~ent of the inven~ion, the contact pressure forces are applied by ~h~s pressure dif~erential ~tween the pr~squre in the Eipdc e outside of ~he 10~17/lg~6 13: 22 ~024144040 SPEN~E~ ~ FRANK PAGE 06 ~0 ~/27113 PCTtBP96/00727 ~nn~r thermal lnsulatlon and the pres~u~e on the in~ide of t~e co~ponent~ ee Figure 2).
In thls ca~e, t~e pre~sure P1, for ~xample, i5 approxim~ely 2 105 P~ and the pre~ur~ P7 ~ 1 ~ 105 Pa.
Tha high-temperatur~ component, including the ~onnec~ion compon~nt~ and insulating elements, is held in~ide a metal ca~ing 11 by ~upports 14. Thi~ metal c~ing is lined ~gain on th~ ~n~ide with an ou~er thermal in~ulating elemen~. The ~u~b~~ 14 have openlngs, so that the g~ pre~ure P2 ~n act upon all o~de~ o~ the inside arrangement of component~
~nd ~o that a r~l~able seali~g tak~s pla~e.
Components can be ~tacked ~o form column~ ~nd the ~tacks can be compr~ssed in the previou~ly deæ~ri~ed way, as shown ~n Figure 3.
In a~ordance wlth another inventive concept, ~h~
co~ponents for the varied functione are provided with equal and ~atching surfa~eQ, æo that a column of, for example, heat ~ -hAngers, afterburner~, reformer~ and gas di~trlbu~ors i~
formed. As a result o~ this, high-loæ~ pipelines between the ~o~ponent~ and expen~l~e thermal insulation are avoided.
Th~ ~pace out~ide of the inner therxaL in~ula~ion 4, 9, ~h~r~ th~ ten~ioning ele~ntæ, including the ~pring~ 7, are loc~ted i~ ~losed of~ ~o the æurroundlng are~ by a ~e~ond, out~r ther~l insulA~ion. It i8 adviæ~ this outer 1~,'17~1~g~ 2 20~41~404Q SPENCER ~ FRANK PA~E 0~
21 8880~
7113 PCT~SP96/00727 then~l in~ulation i8 bl~nked off to the out~aide ~y ~ metal ac~et, whl~h ab60rb~ tl~e presQure ln the ~pace between ~h~
innsr an~ the outsr tl~er~al ln~ulation. Fresh air c~n be oonducted for the prewarming throllgh the space ~etween the 5 ~ n~ the outer insul~tion.
Wh~n us~nq the inventi~e concept for sta~ks, the ~ealing ele~ents that make dire~t ~onta¢t with the stacks are pro~uc~, ac~ordlng t~ the lnvention, from a materi~l that do~s not ¢on~u¢t ions or electron~ (see ~igure 4). ~ther ~ling u~terial ~hat ie p~stlc at h~gh temperatures ~an then be appliRd t~ t~s~ ~ealing elements. This ~yp~ of seal iB nece~sAry, particularly for hydrogen-containing connection el~ents.
For a column having sever~l co~ponents, i~ ~an, ~ccordlng to the ln~sntion, be useful ~o pro~ide a connection el~nt 14 for ~ore ~han one ~omponent ~ lgure 5~.
The profile3 for th~ connection ele~ents ~an be conflgure~ as deslrQd, that ls to ~ay a reotangular or semi-clrcular de~ign (Flgure ~) .
Claims (9)
1. High-temperature component (1) of ceramic material with channels for the flow-through of gases and with connection elements (2, 2', 3, 3'), which are provided for the supply or discharge of the gases, with connection elements (2, 2', 3, 3') that are pressed onto the surface of the high-temperature components (1) by means of mechanically effective contact pressure forces, characterized in that the contact pressure forces are exerted by elastic elements via thermal insulation elements.
2. High-temperature component according to Claim 1 characterized in that the mechanical forces can be transmitted via springs (7) and via insulation elements (4) that are installed between the springs (7) and the connection element (2, 2', 3, 3').
3. High-temperature component in accordance with Claim 1 or 2, characterized in that the mechanical contact pressure forces are primarily achieved with a pressure that is higher for the space surrounding the outside of the connection elements (2, 2', 3, 3') than for the inside space.
4. High-temperature component according to one of the Claims 1 to 3, characterized in that the connection elements (2, 2', 3, 3') are sealed against the sealing surfaces of the high-temperature components (1) with a sealing material (5) that is plastic at high temperatures.
5, High-temperature component in accordance with one of the Claims 1 to 4, characterized in that sealing elements are provided that do not conduct ion or electrons at high temperatures.
6. High-temperature component according to one of the Claims 1 to 5, characterized in that the thermal insulation elements (4) reduce the high processing temperatures in or on the high-temperature components to a temperature of approximately 200 °C that is tolerable for steel springs (7).
7. High-temperature component in accordance with one of the Claims 1 to 6, characterized in that connection surfaces are provided, which permit a stacking of the same kind of components.
8. High-temperature component in accordance with one of the Claims 1 to 7, characterized in that the components with matching surfaces are provided for different purposes, for example for heat exchangers, afterburners, reformers and gas distributors.
9. High-temperature component in accordance with claims 7 and 8, characterized in that the components with matching connecting surfaces can be compressed by a force that is effective from the outside in the direction of the stack axis, and are kept gas-tight.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19506690.1 | 1995-02-25 | ||
| DE1995106690 DE19506690A1 (en) | 1995-02-25 | 1995-02-25 | Arrangement for gas supply for high temperature components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2188805A1 true CA2188805A1 (en) | 1996-09-06 |
Family
ID=7755081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2188805 Abandoned CA2188805A1 (en) | 1995-02-25 | 1996-02-22 | Gas supply arrangement for high-temperature components |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0757777A1 (en) |
| CA (1) | CA2188805A1 (en) |
| DE (1) | DE19506690A1 (en) |
| WO (1) | WO1996027113A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10308382B3 (en) * | 2003-02-27 | 2004-11-11 | Forschungszentrum Jülich GmbH | Bracing a high temperature fuel cell stack |
| DE102004037678A1 (en) * | 2004-08-02 | 2006-03-16 | Webasto Ag | fuel cell stack |
| JP4598510B2 (en) * | 2004-12-22 | 2010-12-15 | 本田技研工業株式会社 | Fuel cell system |
| DE102006060810B4 (en) * | 2006-12-21 | 2015-01-15 | Staxera Gmbh | Housing for receiving and clamping at least one fuel cell stack and fuel cell system |
| DE102007011793A1 (en) | 2007-03-12 | 2008-09-18 | Mtu Cfc Solutions Gmbh | Sealing device for a fuel cell assembly |
| US8968956B2 (en) | 2010-09-20 | 2015-03-03 | Nextech Materials, Ltd | Fuel cell repeat unit and fuel cell stack |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1477703A (en) * | 1974-07-11 | 1977-06-22 | Advanced Materials Eng | Heat exchanger |
| US4262740A (en) * | 1979-02-07 | 1981-04-21 | Heinz Brune | Casings for heat exchangers and burner/recuperator assemblies incorporating such casings |
| US4776387A (en) * | 1983-09-19 | 1988-10-11 | Gte Products Corporation | Heat recuperator with cross-flow ceramic core |
-
1995
- 1995-02-25 DE DE1995106690 patent/DE19506690A1/en not_active Ceased
-
1996
- 1996-02-22 WO PCT/EP1996/000727 patent/WO1996027113A1/en not_active Application Discontinuation
- 1996-02-22 EP EP96904842A patent/EP0757777A1/en not_active Withdrawn
- 1996-02-22 CA CA 2188805 patent/CA2188805A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE19506690A1 (en) | 1996-08-29 |
| WO1996027113A1 (en) | 1996-09-06 |
| EP0757777A1 (en) | 1997-02-12 |
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