Tsis muaj dab tsi txwv kev tsim khoom sai dua li cov tshuab khov kho hauv cov xwm txheej hauv Arctic. Cov kws ua haujlwm ua haujlwm hauv cov chaw khaws cia txias, chav kuaj aerospace, thiab kev teeb tsa roj sab nraum zoov tas li ntsib qhov mob taub hau: yuav ua li cas tswj qhov kub thiab txias thaum ib puag ncig poob rau -40 degree. Cov kev daws teeb meem cua sov feem ntau ua tsis tiav ntawm cov kev kub ntxhov no, txawm tias siv lub zog ntau dhau los yog tsis kam pib thaum txias. Qhov no yog qhov tshwj xeeb cartridge tso cua sov nkag mus rau hauv kev ua tsis tau zoo ntawm kev tswj xyuas thermal.
Lub physics qab no compact powerhouses pib nrog hluav taws xob tsis kam. Ib tug raug mob npib tsib xee-chromium alloy hlau zaum ntawm qhov chaw, ib puag ncig los ntawm siab- purity magnesium oxide rwb thaiv tsev uas hloov cov cua sov kom zoo thaum tiv thaiv hluav taws xob luv. Tag nrho lub rooj sib txoos zaum hauv cov hlau tsis muaj seamless- feem ntau yog 304 lossis 316 stainless hlau rau cov qauv siv, lossis Incoloy 800/840 thaum corrosion kuj tseem ceeb dua. What makes cold-weather versions special isn't just the materials, but how manufacturers optimize the watt density and cold-zone configuration to prevent thermal shock during startup.
Hais txog kev pib ua haujlwm, qhov ntawd yog qhov chaw cua sov feem ntau ntsib lawv qhov kev puas tsuaj. Thaum lub tshuab cua sov hloov ntawm -40 degree, cov ntawv cog lus hlau, tsim micro- qhov sib txawv ntawm cov khoom. Cov tsev ua haujlwm tsis zoo tsim cov chaw kub kub uas hlawv tawm hauv lub lis piam. Cov tshuab cua sov zoo tsim los rau sub- xoom ua haujlwm siv swaged kev tsim kho-txhim kho cov hmoov magnesium oxide kom tshem tawm cov hnab ris huab cua thiab xyuas kom muaj kev sib raug zoo ntawm cov hlau tsis kam thiab cov ntaub qhwv. Cov txheej txheem tsim khoom no tso cai rau cov cua sov hloov mus sai, txo cov thermal gradient uas ua rau cov khoom qaug zog.
Kev xaiv hluav taws xob ua qhov tseem ceeb hauv cov cheeb tsam no. Thaum 220V thiab 240V tseem yog tus qauv rau cov ntawv thov kev lag luam, ntau qhov chaw taws teeb nyiam 24V lossis 48V tshuab rau kev nyab xeeb thiab ua tau zoo nrog cov roj teeb thaub qab. Kev lag luam tawm - tawm suav nrog kev kos tam sim no- qhov hluav taws xob qis dua txhais tau tias muaj zog dua rau tib lub wattage, yuav tsum muaj cov hlau lead ntau dua thiab cov khoom siv hluav taws xob muaj zog dua. Fiberglass-insulated leads nrog silicone oversleeves tuav 480℃F (250 degree) qhov kub thiab txias ntawm qhov chaw sib txuas thaum tseem hloov tau txaus kom muaj sia nyob kev co thiab thermal cycling.
Rau pab pawg saib xyuas, qhov kev sim tiag tiag tuaj thaum lub sijhawm kuaj xyuas. Cartridge rhaub nyob rau hauv ib puag ncig txias yuav tsum muaj kev tiv thaiv rwb thaiv tsev siab tshaj 500 MΩ thaum kuaj txias, nrog rau tam sim no nyob rau hauv 0.5 mA. Ib qho kev degradation hauv cov txiaj ntsig no qhia txog cov dej noo nkag los yog kev puas tsuaj ntawm rwb thaiv tsev- cov teeb meem tshwm sim thaum qhov kub thiab txias ua rau muaj qhov sib xyaw ua ke hauv cov thawv sib txuas. Kev sim megohm tsis tu ncua tiv thaiv kev puas tsuaj loj uas tuaj yeem kaw tag nrho cov kab ntau lawm.
Xaiv txoj kab uas hla yog qhov tseem ceeb tshaj qhov feem ntau paub. Feem ntau qhov ntau thiab tsawg ntawm 3 hli rau cov khoom siv kho mob precision mus txog 25 hli rau cov pwm pwm hnyav. Qhov haum haum yog qhov tseem ceeb heev - xoob heev, thiab hloov tshav kub raug kev txom nyem; nruj heev, thiab kev tshem tawm yuav ua tsis tau tom qab thermal expansion cycles. Cov kws tshaj lij tsim qauv qhia txog txoj kab uas hla nrog -0.02mm tolerances kom ntseeg tau tias cov cua sov kom zoo yam tsis muaj kev khi.
Thaum qhia txog lub tshuab cua sov rau qhov txias txias, xav txog cov duab thermal ua tiav. Lub tshuab cua sov yuav tsum kov yeej tsis yog qhov chaw nyob ib puag ncig -40 degree, tab sis kuj muaj cov cua sov poob los ntawm cua, conduction los ntawm cov qauv hlau, lossis evaporation los ntawm cov txheej txheem cryogenic. Watt density xam pib nrog cov qauv yooj yim-watts xav tau sib npaug lub sijhawm huab hwm coj tshwj xeeb lub sijhawm kub kub nce siab faib los ntawm lub sijhawm-tab sis cov kws paub txog kev paub ntxiv ntxiv 30-40% kev nyab xeeb margins rau arctic tej yam kev mob. Nto loads txog 63W / cm² yog ua tiav nrog high-density designs, txawm hais tias feem ntau cov kev siv huab cua txias ua tau zoo dua ntawm kev txuag 20-30W / cm² los xyuas kom meej lub neej ntev kev pab cuam.
Qhov kev txiav txim siab zaum kawg suav nrog kev tswj hwm. Yooj yim ntawm -Tshem cov ntsuas kub kom txuag hluav taws xob thiab tsim qhov kub hloov pauv uas cov ntaub ntawv ntxhov siab. PID controllers nrog cov khoom ruaj khov-lub xeev relays muab kev ua haujlwm zoo dua, thaum cov thermocouples sib xyaw ua ke (Hom J lossis K) muab qhov tseeb - lub sijhawm tawm tswv yim rau kev tswj xyuas qhov kub thiab txias. Rau cov ntawv thov tseem ceeb, qhia txog lub tshuab cua sov nrog ua-nyob rau hauv cov thermocouples ntawm lub ntsis lossis nruab nrab ua rau kaw- lub voj voog tswj uas them nyiaj rau kev hloov pauv ib puag ncig tau txais.
