Arụmọrụ oyi nke thermoelectric

Ngụkọta arụmọrụ nke oyi thermoelectric:

Tupu e jiri thermoelectric cooling mee ihe, iji ghọtakwuo arụmọrụ ya, n'eziokwu, njedebe oyi nke peltier modul, thermoelectric modulu, na-amịkọrọ okpomọkụ site na gburugburu, e nwere abụọ: otu bụ joule heat Qj; nke ọzọ bụ conduction heat Qk. Ọwa ahụ na-agafe n'ime ihe thermoelectric iji mepụta okpomọkụ joule, ọkara nke okpomọkụ joule na-ebuga na njedebe oyi, ọkara nke ọzọ na-ebuga na njedebe ọkụ, a na-ebufekwa okpomọkụ conduction site na njedebe ọkụ ruo na njedebe oyi.

Mmepụta oyi Qc=Qπ-Qj-Qk

= (2p-2n).Tc.I-1/2j²R-K (Th-Tc)

Ebe R na-anọchite anya nguzogide zuru oke nke otu ụzọ abụọ na K bụ nguzozi okpomọkụ zuru oke.

Okpomọkụ gbapụrụ site na njedebe ọkụ Qh=Qπ+Qj-Qk

= (2p-2n).Th.I+1/2I²R-K (Th-Tc)

A pụrụ ịhụ site na usoro abụọ dị n'elu na ike ọkụ eletrik ntinye bụ kpọmkwem ihe dị iche n'etiti okpomọkụ nke njedebe ọkụ na-agbasa na okpomọkụ nke njedebe oyi na-amịkọrọ, nke bụ ụdị "mgbapụ okpomọkụ":

Qh-Qc=I²R=P

Site na usoro dị n'elu, enwere ike ikwubi na okpomọkụ Qh nke di na nwunye eletrik na-ewepụta na njedebe ọkụ hà nhata na ngụkọta nke ike eletrik ntinye na mmepụta oyi nke njedebe oyi, ma n'aka nke ọzọ, enwere ike ikwubi na mmepụta oyi Qc hà nhata na ọdịiche dị n'etiti okpomọkụ nke njedebe ọkụ na-ewepụta na ike eletrik ntinye.

Qh=P+Qc

Qc=Qh-P

Usoro ngụkọ nke ike oyi kachasị na thermoelectric

A.1 Mgbe okpomọkụ dị na njedebe ọkụ Th bụ 27℃±1℃, ọdịiche okpomọkụ bụ △T=0, na I=Imax.

A na-agbakọ ike oyi kachasị elu Qcmax(W) dịka usoro (1) si dị: Qcmax=0.07NI

Ebe N — logarithm nke ngwaọrụ thermoelectric, I — oke oge okpomọkụ dị iche na ngwaọrụ ahụ (A).

A.2 Ọ bụrụ na okpomọkụ nke elu ọkụ ahụ dị 3~40℃, a ga-edozi ike oyi kachasị elu Qcmax (W) dịka usoro (2) si dị.

Qcmax = Qcmax×[1+0.0042(Th--27)]

(2) N'ime usoro a: Qcmax — okpomọkụ elu ọkụ Th=27℃±1℃ ike oyi kachasị elu (W), Qcmax∣Th — okpomọkụ elu ọkụ Th — ike oyi kachasị elu (W) na okpomọkụ a tụrụ site na 3 ruo 40℃

Nkọwapụta TES1-12106T125

Okpomọkụ dị n'akụkụ ya bụ 30 Celsius,

Imax: 6A,

Oke ike: 14.6V

Qmax:50.8 W

Delta T kacha: 67 C

ACR: 2.1±0.1Ohm

Nha: 48.4X36.2X3.3mm, nha oghere etiti: 30X17.8mm

Emechiri: Emechiri ya site na 704 RTV (agba ọcha)

Waya: 20AWG PVC, nguzogide okpomọkụ 80℃.

Ogologo waya: 150mm ma ọ bụ 250mm

Ihe na-eme ka okpomọkụ dị: Bismuth Telluride