Chitsulo chachitsulo cha uchi ndi chinthu chopangidwa ndi machubu a uchi chopangidwa ndi chipolopolo chachitsulo chosapanga dzimbiri ndi zojambulazo za FeCrAl zomwe zimapangidwa ndi njira yowotcherera machubu. Chimagwiritsidwa ntchito makamaka pothandizira zokutira zothandizira (Pt, Pd, Rh) kapena ngati zinthu zosinthira kutentha, zomwe zimagwiritsidwa ntchito kwambiri poyeretsa utsi wa magalimoto, kukonza mpweya wotayira m'mafakitale, kuteteza kutentha kwa ndege ndi zina.
Yopangidwa kuchokera ku zojambulazo za FeCrAl alloy, gawo lachitsulo la uchi limadzitamandira ndi kapangidwe kolimba, kofanana ndi uchi wokhala ndi njira zazing'ono zofanana—kogwira ntchito ngati "choyatsira mpweya" choyeretsera mpweya wotuluka. Ili ndi zokutira zoyatsira mpweya ndi zitsulo zabwino (Pt, Pd, Rh) ndipo imakhala ndi kukana kutentha kwambiri, zomwe zimathandiza kuti ntchito ikhale yokhazikika kutentha kwambiri. Mpweya wotuluka mpweya wotuluka kutentha kwambiri ukadutsa m'njira zazing'onozi, zoyatsira zitsulo zabwino zimayambitsa machitidwe a mankhwala omwe amasintha zinthu zowononga kukhala zinthu zopanda vuto, ndi machitidwe ofunikira motere:
1. Kusungunuka kwa mpweya wa carbon monoxide:2CO + O₂ = 2CO₂
2. Kusungunuka kwa mpweya wa hydrocarbon:2CxHy + (2x+y/2)O₂ = 2xCO₂ + yH₂O
3. Kuchepetsa nayitrogeni oxide:2NOx = N₂+ xO₂
Ndi kutentha kofulumira, kuthamanga kwa msana kochepa komanso kukana kugwedezeka kwamphamvu, imagwiritsidwa ntchito kwambiri poyeretsa utsi wa magalimoto komanso pochiza mpweya wotayira zinyalala m'mafakitale.
| Chinthu | Chitsulo cha Uchi cha Chitsulo | Choyikapo cha Ceramic |
| Zinthu Zofunika | Foyilo ya aloyi ya FeCrAl | Chomera chopangidwa ndi alumina |
| Mitundu ya Kutentha kwa Ntchito | -40℃ ~ 1200℃ (chiwerengero chapamwamba cha 1300℃) | -20℃ ~ 1000℃ |
| Kutentha kwa Matenthedwe (W/(m·K)) | 11 ~ 15, kutentha mwachangu | 18 ~ 35, kutentha pang'onopang'ono |
| Kupanikizika kwa Msana | ≤ 5kPa, yotsika | ≥ 12kPa, yokwera |
| Kulimba | Yolimba, yoletsa kugwedezeka, komanso yoletsa kusweka | Yofewa, yosavuta kusweka |
| Kulemera | Wopepuka (wopepuka 30-50%) | Zolemera |
| Moyo wa Utumiki | ≥ 5000h (≥150000km) | ≥ 3000h (≥100000km) |
1. Kakang'ono (m'mimba mwake 30-50mm, kutalika 50-100mm, 200-300 cpsi):
Ma UAV, majenereta onyamulika, mainjini ang'onoang'ono a m'madzi, makina ang'onoang'ono a zaulimi, ma ATV ndi zida zamagetsi zogwiritsidwa ntchito m'manja (kukhazikitsa pang'ono, kuipitsa mpweya pang'ono).
2. Kukula kwapakati (m'mimba mwake 80-150mm, kutalika 100-200mm, 100-400 cpsi):
Magalimoto onyamula anthu, magalimoto ang'onoang'ono amalonda (ma catalytic cores a njira zitatu), ma EV range extenders, ma hybrid exhaust ndi ma jenereta ang'onoang'ono adzidzidzi (kuthamanga kwa msana kochepa, kutentha mwachangu).
3. Yaikulu (m'mimba mwake 180-300mm, kutalika 200-400mm, 100-200 cpsi):
Magalimoto akuluakulu, magalimoto a uinjiniya, mpweya wotayira zinyalala m'mafakitale, utsi wotuluka m'madzi, boiler ndi kuyeretsa mpweya wotentha (kuchuluka kwa utsi wotuluka).
4. Zopangidwa mwamakonda (zosasinthasintha, >300mm m'mimba mwake/>400mm kutalika, 60-600 cpsi):
Ma APU a Aerospace, mankhwala a petrochemical, nsanja za mankhwala, ma turbine a gasi ndi ng'anjo zotentha kwambiri (mikhalidwe yovuta).
Inde ndithu. Tikhoza kusintha zinthu zambiri monga momwe zilili pansipa:
1. Kukula ndi Mawonekedwe: M'mimba mwake wosinthika (30mm ~ 500mm +), kutalika (50mm ~ 400mm +), ndi mawonekedwe (ozungulira wamba, mawonekedwe apadera osasinthasintha) kuti agwirizane ndi malo osiyanasiyana oyika zida.
2. Kuchuluka kwa Maselo: Kusinthika kuchokera pa 60 cpsi mpaka 600 cpsi, kufananiza kuyeretsa kosiyanasiyana ndi zofunikira zoyendetsera zinthu zosiyanasiyana (zida zazing'ono zamagetsi, kukonza mpweya woipa wa mafakitale, ndege).
3. Mafotokozedwe a Zinthu: Kukhuthala kwa pepala la aloyi la FeCrAl (0.03 ~ 0.08mm) kungasinthidwe, ndipo chiŵerengero cha kapangidwe ka aloyi (Cr: 18-22%, Al: 4-6%) chingasinthidwe kutengera momwe ntchito ikuyendera.
4. Kukweza kwa Catalyst: Kuchuluka kwa katundu komwe kungasinthidwe (5 ~ 20 g/L) ndi chiŵerengero cha Pt/Pd/Rh chachitsulo chodziwika bwino, chogwirizana ndi miyezo yosiyanasiyana yoyeretsera utsi ndi zosowa za catalytic efficiency.
Nthawi yotumizira: Epulo-22-2026