Kev Taw Qhia rau Thermoelectric txias module
Thermoelectric thev naus laus zis yog cov txheej txheem thermal tswj kev ua haujlwm raws li cov nyhuv Peltier. Nws tau tshawb pom los ntawm JCA Peltier hauv xyoo 1834, qhov tshwm sim no suav nrog cov cua sov lossis cua txias ntawm qhov sib txuas ntawm ob qho khoom siv hluav taws xob (bismuth thiab telluride) los ntawm kev hla tam sim no los ntawm kev sib tshuam. Thaum lub sijhawm ua haujlwm, cov dej ntws ncaj qha los ntawm TEC module ua rau cov cua sov hloov ntawm ib sab mus rau lwm qhov. Tsim ib sab txias thiab kub. Yog tias qhov kev taw qhia ntawm qhov tam sim no thim rov qab, qhov txias thiab kub sab yog hloov. Nws lub zog txias kuj tuaj yeem hloov kho los ntawm kev hloov nws txoj haujlwm tam sim no. Ib tug raug ib theem txias txias (Daim duab. 1) muaj ob daim hlau ceramic nrog p thiab n-hom semiconductor khoom (bismuth, telluride) ntawm cov phaj ceramic. Cov khoom ntawm cov khoom siv semiconductor txuas nrog hluav taws xob hauv series thiab thermally nyob rau hauv parallel.
Thermoelectric cooling module, Peltier ntaus ntawv, TEC modules tuaj yeem suav hais tias yog hom khoom siv hluav taws xob thermal lub zog twj tso kua mis, thiab vim nws qhov hnyav, qhov loj thiab tus nqi ntawm cov tshuaj tiv thaiv, nws yog qhov tsim nyog siv los ua ib feem ntawm lub tshuab cua txias inbuilt (vim qhov txwv ntawm qhov chaw). Nrog rau qhov zoo xws li kev ua haujlwm ntsiag to, tawg pov thawj, kev poob siab, kev siv lub neej ntev thiab kev saib xyuas yooj yim, niaj hnub thermoelectric txias module, peltier ntaus ntawv, TEC modules muaj ntau daim ntawv thov hauv kev ua tub rog, aviation, aerospace, kev kho mob, kev tiv thaiv kab mob, kev sim, cov khoom siv (dej txias, tsheb txias, tsev so txias, wine txias, thiab lwm yam).
Niaj hnub no, vim nws qhov hnyav, me me lossis muaj peev xwm thiab tus nqi qis, cov cua kub cua txias tau siv dav hauv kev kho mob, tshuaj, khoom siv dav hlau, dav hlau, tub rog, spectrocopy systems, thiab cov khoom lag luam (xws li kub & dej txias dispenser, portable tub yees, carcooler thiab lwm yam)
| Tsis muaj | |
| I | Kev khiav hauj lwm tam sim no rau TEC module (hauv Amps) |
| Imax | Kev khiav hauj lwm tam sim no uas ua rau qhov kub siab tshaj qhov sib txawv △Tmax(hauv Amps) |
| Qc | Cov cua sov uas tuaj yeem nqus tau ntawm lub ntsej muag txias ntawm TEC (hauv Watts) |
| Qmax | Qhov siab tshaj plaws ntawm cov cua sov uas tuaj yeem nqus tau ntawm sab txias. Qhov no tshwm sim ntawm kuv = Imaxthiab thaum Delta T = 0. (hauv Watts) |
| Tkub | Qhov kub ntawm lub ntsej muag kub thaum TEC module ua haujlwm (hauv ° C) |
| Ttxias | Qhov kub ntawm lub ntsej muag txias thaum TEC module ua haujlwm (hauv ° C) |
| △T | Qhov sib txawv ntawm qhov kub thiab txias ntawm sab kub (Th) thiab sab txias (Tc). Delta T = Th-Tc(hauv ° C) |
| △Tmax | Qhov siab tshaj qhov sib txawv ntawm qhov kub thiab txias ntawm TEC module tuaj yeem ua tiav ntawm sab kub (Th) thiab sab txias (Tc). Qhov no tshwm sim (Maximum txias peev) ntawm kuv = Imaxthiab Qc= 0. (°C) |
| Umax | Voltage mov ntawm I = Imax(hauv Volts) |
| ε | TEC module txias efficiency (%) |
| α | Seebeck coefficient ntawm cov khoom siv thermoelectric (V / ° C) |
| σ | Hluav taws xob coefficient ntawm cov khoom siv thermoelectric (1 / cm·ohm) |
| κ | Thermo conductivity ntawm cov khoom siv thermoelectric (W / CM ° C) |
| N | Tus naj npawb ntawm cov khoom siv thermoelectric |
| Iεmax | Tam sim no txuas thaum qhov kub thiab txias sab ntawm TEC module yog tus nqi teev thiab nws yuav tsum tau txais qhov ua tau zoo tshaj plaws (hauv Amps) |
Taw qhia ntawm daim ntawv thov Formulas rau TEC module
Qc= 2N[α(Tc+273) - ib²/2σS-κs/Lx(Th- Tc)]
△T = [Iα(Tc+273) LI/²2σS] / (κS/L + I α]
U = 2 N [IL / σS + α(Th- Tc)]
ε = Qc/UI
Qh= Qc + IU
△ Tmax= Th+ 273 + κ/σα² x [ 1-√2σα²/κx (Th+273) + 1.
Imax =κS/ Lαx [√2σα²/κx (Th+273) + 1-1] ib.
Iεmax =ασS (Th- Tc) / L (√1+0.5σα²(546+ Th- Tc)/ k-1)
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Cov khoom muag zoo tshaj plaws
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