Ungazikhetha njani iimodyuli zokupholisa ze-thermoelectric (iimodyuli ze-thermoelectric)?

I-Beijing Huimao Cooling Equipment Co., Ltd. iqalise uthotho lweemodyuli zokupholisa ze-thermoelectric, iimodyuli ze-thermoelectric, izinto ze-peltier, izixhobo ze-peltier, kuquka iimodyuli zokupholisa ze-thermoelectric eziqhelekileyo ze-batch, iimodyuli ze-TEC kunye neemodyuli ze-thermoelectric ezikhethekileyo ezenziwe ngokwezifiso, iimodyuli ze-peltier, izinto ze-peltier ngokweemfuno zabathengi. Kukho iimodyuli ze-thermoelectric zesigaba esinye, izixhobo ze-peltier, iimodyuli ze-TEC kunye neemodyuli zokupholisa ze-thermoelectric zesigaba esininzi, iimodyuli ze-thermoelectric, ii-cooler ze-peltier ezifana nezigaba ezimbini, ezintathu ukuya kwezintandathu. Iimodyuli zokupholisa ze-thermoelectric (iimodyuli ze-thermoelectric, izinto ze-peltier) zisebenzisa isiphumo se-thermoelectric see-semiconductors. Xa umbane othe ngqo udlula kwi-thermocouple eyenziwe ngokudibanisa izixhobo ezimbini ezahlukeneyo ze-semiconductor ngokulandelelana, isiphelo esibandayo kunye nesiphelo esishushu ngokulandelelana zifunxa kwaye zikhuphe ubushushu, zizenze zibe lukhetho olufanelekileyo lokusetyenziswa kokujikeleza kobushushu. Ayifuni friji, inokusebenza ngokuqhubekayo, ayinamthombo wongcoliseko kwaye ayinazo iindawo ezijikelezayo, kwaye ayiyi kuvelisa isiphumo esijikelezayo. Ukongeza, ayinazo iindawo ezityibilikayo, isebenza ngaphandle kokungcangcazela okanye ingxolo, inobomi obude benkonzo kwaye kulula ukuyifaka. Iimodyuli zokupholisa ze-thermoelectric, iimodyuli ze-TEC, iimodyuli ze-peltier, iimodyuli ze-thermoelectric zisetyenziswa kakhulu kwicandelo lezonyango, lezomkhosi nelebhu apho kufuneka khona ukuchaneka nokuthembeka kolawulo lobushushu obuphezulu.

Indlela yokukhetha uhlobo olufanelekileyo kukuqala kokusetyenziswa kweemodyuli ze-thermoelectric, iimodyuli zokupholisa ze-thermoelectric, iimodyuli ze-TE. Kuphela ngokukhetha imodyuli yokupholisa ye-thermoelectric apho injongo yokulawula ubushushu elindelekileyo ingafezekiswa khona. Ngaphambi kokukhetha imodyuli yePeltier, imodyuli ye-TEC, imodyuli ye-thermoelectric, kuyimfuneko kuqala ukucacisa iimfuno zokupholisa, ukuba yintoni injongo yokupholisa, luhlobo luni lobuchwepheshe bokupholisa omele ukhethe, luhlobo luni lwendlela yokuqhuba ubushushu, luhlobo luni lobushushu olujoliswe kulo, kunye nokuba bungakanani umbane onokubonelelwa ngawo. Ukuba uceba ukukhetha iimodyuli zokupholisa ze-thermoelectric, imodyuli ye-thermoelectric, iimodyuli ze-peltier, imodyuli ye-TEC, izinto ze-peltier ezivela eBeijing Huimao Cooling Equipment Co., Ltd., unokumisela imodeli efunekayo ngala manyathelo alandelayo okukhetha.

1. Qikelela umthwalo wobushushu

Umthwalo wobushushu ubhekisa kubungakanani bobushushu obufunekayo ukususwa ukuze kwehliswe ubushushu bethagethi yokupholisa ukuya kwinqanaba elithile phantsi kobushushu obuthile, apho iyunithi ingu-W (watt). Imithwalo yobushushu ibandakanya ikakhulu imithwalo esebenzayo, imithwalo engasebenziyo, kunye nokudibanisa kwayo. Umthwalo wobushushu osebenzayo ngumthwalo wobushushu oveliswa yithagethi yokupholisa ngokwayo. Umthwalo wobushushu ongasebenziyo ngumthwalo wobushushu obangelwa yimitha yangaphandle, i-convection kunye nokuqhuba. Ifomula yokubala umthwalo osebenzayo

I-Qactive = V2/R = VI = I2R;

I-Qactive = Umthwalo wobushushu osebenzayo (W);

V = I-voltage esetyenziswa kwindawo yokukhenkceza (V);

R = Ukuxhathisa kwethagethi yokukhenkcisa;

I = Umsinga ohamba kwithagethi epholileyo (A)

Umthwalo wobushushu oqaqambileyo ngumthwalo wobushushu odluliselwa kwinto ekujoliswe kuyo ngemitha ye-electromagnetic. Ifomula yokubala:

Qrad = F es A (Tamb4 – Tc4);

I-Qrad = Umthwalo wobushushu oqaqambileyo (W);

F = isici semilo (ixabiso elibi kakhulu = 1);

e = ukukhupha izinto ezingafunekiyo (ixabiso elibi kakhulu = 1);

s = uStefan-Boltzmann ongaguqukiyo (5.667 X 10-8W/m² k4);

A = Indawo yokupholisa (m²);

I-Tamb = Ubushushu obuphakathi (K);

I-Tc = I-TEC – Ubushushu obubandayo (K).

Umthwalo wobushushu obuguquguqukayo ngumthwalo wobushushu odluliselwa ngokwendalo lulwelo oludlula kumphezulu wento ekujoliswe kuyo luvela ngaphandle. Ifomula yokubala yile:

I-Qconv = hA (Tair – Tc);

I-Qconv = Umthwalo wobushushu obuguquguqukayo (W)

h = I-coefficient yokudlulisa ubushushu obuguquguqukayo (W/m² °C) (ixabiso eliqhelekileyo lendiza yamanzi kwi-atmosphere enye eqhelekileyo) = 21.7 W/m² °C;

A = Indawo yomphezulu (m²);

Tair = Ubushushu be-Ambient (°C);

I-Tc = Ubushushu obubandayo (°C);

Umthwalo wobushushu oqhubayo ngumthwalo wobushushu odluliselwa ukusuka ngaphandle ngokusebenzisa izinto zoqhagamshelwano kumphezulu wento ekujoliswe kuyo. Ifomula yokubala yile:

Qcond =k A DT/L;

I-Qcond = Umthwalo wobushushu odluliselweyo (W);

k = Ukuqhuba kobushushu bezinto eziqhuba ubushushu (W/m °C);

A = Indawo enqamlezileyo yezinto eziqhuba ubushushu (m²);

L = Ubude bendlela yokuqhuba ubushushu (m)

I-DT = Umahluko wobushushu kwindlela yokuqhuba ubushushu (°C) (ngokuqhelekileyo ubhekisa kubushushu obuphakathi okanye ubushushu besinki yobushushu ngaphandle kobushushu bokuphela kokubanda.)

Kwi-convection kunye ne-conduction edibeneyo yomthwalo wobushushu, ifomula yokubala yile:

Q passive = (A x DT)/(x/k + 1/h);

Qpassive = Umthwalo wobushushu (W);

A = Ummandla opheleleyo womphezulu weqokobhe (m2);

x = Ubukhulu bomaleko wokukhusela (m)

k = Ukuqhuba kobushushu bokugquma (W/m °C);

h = I-coefficient yokudlulisa ubushushu obuguquguqukayo (W/m² °C)

DT = Umahluko wobushushu (°C).

2. Bala umthwalo wobushushu uwonke

Kwinyathelo lokuqala, singabala umthwalo wobushushu opheleleyo wethagethi yokufriji.

Masithi kwiprojekthi yokwenyani, umthwalo wobushushu osebenzayo yi-8W, umthwalo wobushushu okhanyayo yi-0.2W, umthwalo wobushushu ojikelezayo yi-0.8W, umthwalo wobushushu oqhubayo yi-0W, kwaye umthwalo wobushushu uwonke yi-9W.

3. Chaza ubushushu

Chaza ubushushu obushushu, ubushushu obubandayo kunye nobushushu obubandayo bephepha lokuphola. Masithi kwiprojekthi yokwenyani, ubushushu obuphakathi bungama-27°C, ubushushu obujolise ekupholeni buyi--8°C, kwaye umahluko wobushushu obupholileyo buyi-DT=35°C.

Ukuba umlinganiselo wobushushu opheleleyo wethagethi yokupholisa uqikelelwa ukuba yi-9W ngokusekwe kuqikelelo lwangaphambili, i-Qmax efanelekileyo ingafunyanwa njenge-9/0.25=36W, kwaye i-Qmax ephezulu ingafunyanwa njenge-9/0.45=20. Khangela ikhathalogu yemveliso yeBeijing Huimao Cooling Equipment Co., Ltd ukuze ufumane iimodyuli zokupholisa ze-thermoelectric, iimodyuli ze-peltier, izixhobo ze-peltier, iimodyuli ze-peltier.TEC kwaye ufumane iimveliso ezine-Qmax ukusuka kwi-20 ukuya kwi-36.