Yadda ake zaɓar na'urorin sanyaya thermoelectric (na'urorin thermoelectric)?

Kamfanin Beijing Huimao Cooling Equipment Co., Ltd. ya ƙaddamar da jerin na'urorin sanyaya thermoelectric, na'urorin thermoelectric, abubuwan peltier, na'urorin peltier, gami da na'urorin sanyaya thermoelectric na yau da kullun, na'urorin TEC da na'urorin thermoelectric na musamman, na'urorin peltier, na'urorin peltier bisa ga buƙatun abokin ciniki. Akwai na'urorin thermoelectric na mataki ɗaya, na'urorin peltier, na'urorin TEC da kuma na'urorin sanyaya thermoelectric na matakai da yawa, na'urorin thermoelectric, na'urorin sanyaya peltier kamar na matakai biyu, na matakai uku zuwa shida. Na'urorin sanyaya thermoelectric (na'urorin thermoelectric, na'urorin peltier) suna amfani da tasirin thermoelectric na semiconductors. Lokacin da wutar lantarki ta kai tsaye ta ratsa thermocouple da aka samar ta hanyar haɗa kayan semiconductor guda biyu a jere, ƙarshen sanyi da ƙarshen zafi bi da bi suna sha da sakin zafi, wanda hakan ya sa su zama zaɓi mafi kyau don aikace-aikacen zagayowar zafin jiki. Ba ya buƙatar wani firiji, yana iya aiki akai-akai, ba shi da tushen gurɓatawa kuma babu sassan juyawa, kuma ba zai haifar da tasirin juyawa ba. Bugu da ƙari, ba shi da sassan zamiya, yana aiki ba tare da girgiza ko hayaniya ba, yana da tsawon rai kuma yana da sauƙin shigarwa. Ana amfani da na'urorin sanyaya thermoelectric, na'urorin TEC, na'urorin peltier, na'urorin thermoelectric sosai a fannin likitanci, soja da dakin gwaje-gwaje inda ake buƙatar daidaito da aminci wajen sarrafa zafin jiki mai yawa.

Yadda ake zaɓar nau'in da ya dace shine farkon amfani da na'urorin thermoelectric, na'urorin sanyaya thermoelectric, na'urorin TE. Ta hanyar zaɓar na'urar sanyaya thermoelectric ne kawai za a iya cimma burin sarrafa zafin jiki da ake tsammani. Kafin zaɓar na'urar Peltier, na'urar TEC, na'urar thermoelectric, ya zama dole a fara fayyace buƙatun sanyaya, menene abin da ake nufi da sanyaya, wane irin fasahar sanyaya da za a zaɓa, wane irin hanyar isar da zafi, menene zafin da ake nufi, da kuma adadin wutar da za a iya bayarwa. Idan kuna shirin zaɓar na'urorin sanyaya thermoelectric, na'urar thermoelectric, na'urorin peltier, na'urar TEC, na'urorin peltier daga Beijing Huimao Cooling Equipment Co., Ltd., zaku iya tantance samfurin da ake buƙata ta hanyar matakan zaɓi masu zuwa.

1. Kimanta nauyin zafi

Nauyin zafi yana nufin adadin zafi da ake buƙatar cirewa don rage zafin abin sanyaya zuwa wani takamaiman matakin a ƙarƙashin wani yanayi na zafin jiki, tare da na'urar tana da W (watt). Nauyin zafi galibi ya haɗa da lodin aiki, lodin da ba a iya amfani da shi ba, da haɗuwarsu. Nauyin zafi mai aiki shine nauyin zafi da abin sanyaya da kansa ya samar. Nauyin zafi mai aiki shine nauyin zafi da radiation na waje, convection da conduction ke haifarwa. Tsarin lissafin kaya mai aiki

Qactive = V2/R = VI = I2R;

Qactive = Nauyin zafi mai aiki (W);

V = Ƙarfin wutar lantarki da aka yi amfani da shi a kan abin da aka sanyaya (V);

R = Juriyar maƙasudin sanyaya;

I = Wutar lantarki tana gudana ta cikin abin da aka sanyaya (A)

Nauyin zafi mai haske shine nauyin zafi da aka tura zuwa ga abin da aka nufa ta hanyar hasken lantarki. Tsarin lissafi:

Qrad = F es A (Tamb4 – Tc4);

Qrad = Load mai zafi mai haske (W);

F = siffar da ta fi dacewa (mafi munin ƙima = 1);

e = fitarwa (mafi munin darajar = 1);

s = Stefan-Boltzmann mai ƙarfi (5.667 X 10-8W/m² k4);

A = Yankin sanyaya (m²);

Tamb = Yanayin Zafin Yanayi (K);

Tc = TEC - Yanayin sanyi (K).

Nauyin zafi mai convective shine nauyin zafi da ruwan da ke ratsa saman abin da aka nufa daga waje ke ɗauka ta hanyar halitta. Tsarin lissafi shine:

Qconv = hA (Tair – Tc);

Qconv = Load mai zafi mai juyewa (W)

h = Ma'aunin canja wurin zafi mai juyi (W/m² °C) (ƙimar da aka saba amfani da ita a sararin samaniya ɗaya) = 21.7 W/m² °C;

A = Yankin saman (m²);

Tair = Yanayin yanayi (°C);

Tc = Yanayin sanyi (°C);

Nauyin zafi mai sarrafawa shine nauyin zafi da aka canjawa wuri daga waje ta hanyar abubuwan da aka taɓa a saman abin da aka nufa. Tsarin lissafi shine:

Qcond = k A DT/L;

Qcond = An canja wurin nauyin zafi (W);

k = Mai jure zafi na kayan aikin zafi (W/m °C);

A = Yankin giciye na kayan aikin wutar lantarki (m²);

L = Tsawon hanyar isar da zafi (m)

DT = Bambancin zafin jiki na hanyar watsa zafi (°C) (yawanci yana nufin zafin yanayi ko zafin wurin nutsewa a cikin zafi banda zafin sanyi.)

Don haɗakar nauyin zafi na convection da conduction, dabarar lissafi ita ce:

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

Qpassive = Nauyin zafi (W);

A = Jimillar faɗin saman harsashi (m2);

x = Kauri na layin rufi (m)

k = Tsarin watsa zafi na rufi (W/m °C);

h = Ma'aunin canja wurin zafi mai juyi (W/m ² °C)

DT = Bambancin zafin jiki (°C).

2. Lissafa jimillar nauyin zafi

Ta hanyar mataki na farko, za mu iya ƙididdige jimillar nauyin zafi na maƙasudin sanyaya.

A ce a cikin ainihin aikin, nauyin zafi mai aiki shine 8W, nauyin zafi mai haske shine 0.2W, nauyin zafi mai convective shine 0.8W, nauyin zafi mai conductive shine 0W, kuma jimlar nauyin zafi shine 9W.

3. Bayyana yanayin zafi

Faɗi bambancin zafin zafi, zafin ƙarshen sanyi da zafin firiji na takardar sanyaya. A ce a cikin ainihin aikin, zafin yanayi shine 27°C, zafin da aka nufa na sanyaya shine -8°C, da kuma bambancin zafin sanyi DT = 35°C

Idan aka yi la'akari da cewa jimillar nauyin zafi na maƙasudin sanyaya an kiyasta shine 9W bisa ga kimantawar da aka yi a baya, ana iya samun mafi kyawun Qmax a matsayin 9/0.25=36W, kuma matsakaicin Qmax a matsayin 9/0.45=20. Bincika kundin samfurin na Beijing Huimao Cooling Equipment Co., Ltd don na'urorin sanyaya thermoelectric, na'urorin peltier, na'urorin peltier, abubuwan peltier. na'urorin TEC kuma nemo samfuran da Qmax ke da su daga 20 zuwa 36.