Aikin sanyaya thermoelectric

Lissafin aikin sanyaya thermoelectric:

Kafin a yi amfani da sanyayawar thermoelectric, don ƙarin fahimtar aikinsa, a zahiri, ƙarshen sanyi na peltier module, thermoelectric modules, yana ɗaukar zafi daga kewaye, akwai guda biyu: ɗaya shine joule heat Qj; ɗayan kuma shine conduction heat Qk. Current yana ratsa cikin sinadarin thermoelectric don samar da zafi joule, rabin zafin joule ana watsa shi zuwa ƙarshen sanyi, ɗayan kuma ana watsa shi zuwa ƙarshen zafi, kuma ana watsa zafi conduction daga ƙarshen zafi zuwa ƙarshen sanyi.

Samar da sanyi Qc=Qπ-Qj-Qk

= (2p-2n).Tc.I-1/2j²R-K (Th-Tc)

Inda R ke wakiltar jimlar juriyar nau'i biyu da kuma K shine jimlar ƙarfin wutar lantarki.

Zafi ya ɓace daga ƙarshen zafi Qh=Qπ+Qj-Qk

= (2p-2n).Th.I+1/2I²R-K (Th-Tc)

Za a iya gani daga cikin dabarun guda biyu da ke sama cewa wutar lantarki da aka shigar ita ce daidai bambanci tsakanin zafin da ƙarshen zafi ya watsa da kuma zafin da ƙarshen sanyi ya sha, wanda wani nau'in "famfon zafi" ne:

Qh-Qc=I²R=P

Daga cikin dabarar da ke sama, za a iya kammala da cewa zafin Qh da ma'auratan lantarki ke fitarwa a ƙarshen zafi daidai yake da jimlar wutar lantarki da aka shigar da ita da kuma fitowar sanyi na ƙarshen sanyi, kuma akasin haka, za a iya kammala da cewa fitowar sanyi Qc daidai yake da bambanci tsakanin zafin da ƙarshen zafi ke fitarwa da wutar lantarki da aka shigar.

Qh=P+Qc

Qc=Qh-P

Hanyar lissafi ta matsakaicin ƙarfin sanyaya na thermoelectric

A.1 Idan zafin jiki a ƙarshen zafi Th shine 27℃±1℃, bambancin zafin shine △T=0, kuma I=Imax.

Ana ƙididdige matsakaicin ƙarfin sanyaya Qcmax(W) bisa ga dabarar (1): Qcmax=0.07NI

Inda N - logarithm na na'urar thermoelectric, I - matsakaicin bambancin zafin jiki na na'urar (A).

A.2 Idan zafin saman zafi ya kai 3~40℃, ya kamata a gyara matsakaicin ƙarfin sanyaya Qcmax (W) bisa ga dabarar (2).

Qcmax = Qcmax×[1+0.0042(Th--27)]

(2) A cikin dabarar: Qcmax — zafin saman zafi Th=27℃±1℃ matsakaicin ƙarfin sanyaya (W), Qcmax∣Th — zafin saman zafi Th — matsakaicin ƙarfin sanyaya (W) a zafin da aka auna daga 3 zuwa 40℃

Bayanin TES1-12106T125

Zafin gefen zafi shine 30°C,

Imax: 6A,

Babban ƙarfin lantarki: 14.6V

Qmax：50.8 W

Delta T max： 67 C

ACR: 2.1±0.1Ohm

Girman: 48.4X36.2X3.3mm, girman ramin tsakiya: 30X17.8mm

An rufe: An rufe ta da 704 RTV (launi fari)

Waya: 20AWG PVC, juriya ga zafin jiki 80℃.

Tsawon waya: 150mm ko 250mm

Kayan lantarki: Bismuth Telluride