Kusankha ma module oziziritsira a thermoelectric a magawo ambiri (chipangizo cha ma peltier a magawo ambiri) n'kovuta kwambiri kuposa kusankha ma module wamba a thermoelectric a gawo limodzi, choziziritsira cha ma peltier chifukwa chimakhala ndi kapangidwe ka "cascade" ndipo chili ndi zofunikira zapamwamba pakuwongolera kutentha ndi kufananiza magawo amagetsi.
Gawo 1: Fotokozani zofunikira zazikulu (zofunikira pakulowetsa)
Musanayang'ane mitundu inayake, "zizindikiro zolimba" zitatu zotsatirazi ziyenera kudziwika pamene zikupanga maziko a chisankhocho:
Kutentha kofunikira (Tc) ndi kutentha kotentha (Th):
Kodi kutentha kwa kuzizira kuyenera kufika pati? (Mwachitsanzo: -40°C)
Kodi mphamvu yayikulu yotulutsa kutentha ya gawo lotentha ndi iti? (Nthawi zambiri imapangidwa ngati 25°C kapena 50°C).
Werengani kusiyana kwa kutentha (ΔT): ΔT = Th – Tc. Ma chips okhala ndi magawo ambiri nthawi zambiri amagwiritsidwa ntchito pazochitika zomwe ΔT > 70°C.
Kulemera kwa kutentha (Qc):
Kodi chinthu chozizira chimatulutsa mphamvu yochuluka bwanji (W)?
Ngati simukudziwa, ndikofunikira kuwerengera kutentha konse komwe kwapangidwa ndi chinthucho, kuphatikizapo kutentha kwamkati, kutentha kwa conduction, ndi kutentha kwa radiation.
Malo ndi magetsi omwe alipo:
Zoletsa kukula kwa malo oyika (kutalika ndi m'lifupi)?
Kodi magetsi ndi magetsi okhazikika (monga 12V, 24V) kapena magetsi okhazikika? Kodi malire a magetsi okhazikika ndi otani?
Gawo 2: Kumvetsetsa magawo ofunikira (zizindikiro zazikulu)
Magawo a ma module a ma peltier a magawo ambiri, zida za ma multi-stage pletier zili ndi mgwirizano wamphamvu. Yang'anani pazinthu zinayi izi:
Chiwerengero cha magawo (Magawo):
Ichi ndi chizindikiro chodziwika bwino cha ma module a thermoelectric okhala ndi magawo ambiri, zinthu za peltier. Kawirikawiri, pali magawo awiri, magawo atatu, kapena magawo asanu ndi limodzi a module yoziziritsira ya thermoelectric.
Lamulo lachindunji: Magawo ambiri, kusiyana kwa kutentha komwe kungatheke kumapezeka, koma mphamvu yozizira (Qc) idzakhala yocheperako ndipo mtengo udzakhala wokwera. Kawirikawiri, kusiyana kwakukulu kwa kutentha kwa gawo limodzi ndi pafupifupi 60-70°C. Ngati kutentha kwa -80°C kapena kutsika kukufunika, gawo la peltier la magawo ambiri liyenera kusankhidwa.
Mphamvu yozizira kwambiri (Qmax):
Amatanthauza mphamvu yayikulu yoyamwitsa kutentha pamene kusiyana kwa kutentha kuli 0.
Malangizo osankha: Mphamvu yeniyeni yoziziritsira (Qc) panthawi yogwira ntchito ndi yaying'ono kwambiri kuposa Qmax. Nthawi zambiri amalangizidwa kuti Qmax ikhale yowirikiza kawiri mphamvu yanu yeniyeni yotenthetsera, zomwe zimasiya malire kuti zitsimikizire kuti ikugwira ntchito bwino komanso kuti ikhale ndi moyo wautali.
Kusiyana kwakukulu kwa kutentha (ΔTmax):
Zimatanthauza kusiyana kwakukulu kwa kutentha komwe gawo loziziritsira la thermoelectric, chinthu cha peltier chingathe kukwaniritsa (pamene mphamvu yozizira ndi 0).
Malangizo osankha: ΔTmax yosankhidwa iyenera kukhala yokwera ndi 10-20% kuposa kusiyana kwenikweni kwa kutentha komwe mukufuna.
Voltage ndi mphamvu yamagetsi (Vmax / Imax):
Kukana kwamkati kwa gawo lozizira la thermoelectric la magawo ambiri, gawo la TEC nthawi zambiri limakhala lalikulu, ndipo magetsi amatha kukhala okwera (monga 24V, 48V, kapena kupitirira apo), pomwe mphamvu yamagetsi ndi yaying'ono. Onetsetsani kuti magetsi anu amatha kuyendetsa.
Gawo 3: Gwiritsani ntchito njira yolumikizirana (yofanana bwino)
Iyi ndi sitepe yofunika kwambiri. Musangodalira pa mfundo zazikulu zomwe zafotokozedwa mu pepala lofotokozera!
Kagwiridwe ka ntchito ka module yoziziritsa ya thermoelectric yokhala ndi magawo ambiri si kolunjika.
Dziwani malo ogwirira ntchito: Pa kusiyana kwa kutentha komwe mukufuna (ΔT) ndi mphamvu yoziziritsira yomwe mukufuna (Qc), onani graph yokhotakhota.
Pezani mphamvu yamagetsi yoyenera (Iop): Pezani mtengo wamagetsi wofanana.
Werengerani chiŵerengero cha mphamvu yogwiritsira ntchito bwino (COP): Yesetsani kupanga gawo la thermoelectric kugwira ntchito m'dera lomwe lili ndi COP yapamwamba (nthawi zambiri pafupifupi 30%-50% ya mphamvu yayikulu), m'malo mogwira ntchito mokwanira. Kugwira ntchito mokwanira kungapereke kuziziritsa mwachangu, koma kumabweretsa kutentha kwambiri ndipo kumakhala ndi mphamvu yochepa kwambiri.
Gawo 4: Kapangidwe ndi Kukhazikitsa
Ma module oziziritsira a thermoelectric a magawo ambiri (module ya TEC ya magawo ambiri) ndi ofooka kwambiri kuposa ma module oziziritsira a thermoelectric a gawo limodzi (ma module a peltier a gawo limodzi). Posankha mtundu, kapangidwe kake kayenera kuganiziridwa:
Zoletsa Kukula:
Ma modules oziziritsira a peltier okhala ndi masitepe ambiri nthawi zambiri salimbikitsidwa kuti akhale aakulu kwambiri (monga okulirapo kuposa 62x62mm), chifukwa malo akuluakulu kwambiri angapangitse kuti mbale za ceramic zipindike kapena kusweka mosavuta. Pa kuziziritsa kwakukulu, tikulimbikitsidwa kugwiritsa ntchito ma mdoules ang'onoang'ono a peltier olumikizidwa motsatizana kapena motsatizana.
Njira yolumikizira:
Kulumikizana kwa mndandanda: Koyenera. Mphamvu yamagetsi ndi yokhazikika, yosavuta kuyilamulira. Ngati chidutswa chimodzi chawonongeka, chingathe kudziwika mosavuta (ndi kusweka kwa dera).
Kulumikizana kofanana: Sikuvomerezeka. Ngati kukana kwamkati kwa chidutswa chimodzi kwasintha, kugawa kwamagetsi kudzakhala kofanana, zomwe zimapangitsa kuti pakhale "mpikisano wamagetsi", zomwe zimapangitsa kuti kuwonongeka kuchepe.
Nthawi yotumizira: Meyi-19-2026
