Ukusebenza kokupholisa kweThermoelectric

Ubalo lokupholisa kweThermoelectric:

Ngaphambi kokufaka ukupholisa kwe-thermoelectric, ukuqonda ngakumbi ukusebenza kwayo, enyanisweni, isiphelo esibandayo semodyuli ye-peltier, iimodyuli ze-thermoelectric, zifunxa ubushushu obuvela kwindawo engqongileyo, kukho ezimbini: enye yi-joule yokushisa Qj; Enye yi conduction ubushushu Qk. I-current idlula ngaphakathi kwendawo ye-thermoelectric ukuvelisa ukushisa kwe-joule, isiqingatha sobushushu be-joule sidluliselwa kwisiphelo esibandayo, esinye isiqingatha sidluliselwa kwisiphelo esishushu, kwaye ukushisa kwe-conduction kudluliselwa ukusuka ekupheleni okushushu ukuya ekupheleni okubandayo.

Imveliso ebandayo Qc=Qπ-Qj-Qk

= (2p-2n).Tc.I-1/2j²R-K (Th-Tc)

Apho i-R imele ukuxhathisa okupheleleyo kwesibini kunye ne-K yi-conductivity epheleleyo ye-thermal.

Ubushushu buthe chatha kwisiphelo esishushu Qh=Qπ+Qj-Qk

= (2p-2n).Th.I+1/2I²R-K (Th-Tc)

Inokubonwa kwezi fomyula zimbini zingasentla ukuba amandla ombane angenawo ngumahluko kanye phakathi kobushushu obutshatyalaliswe sisiphelo esishushu kunye nobushushu obufunxwa sisiphelo esibandayo, oluluhlobo “lwempompo yobushushu”:

Qh-Qc=I²R=P

Ukususela kule fomyula ingentla, kunokugqitywa ukuba ukushisa kwe-Qh okukhutshwe yisibini sombane kwisiphelo esishushu silingana nenani legalelo lamandla ombane kunye nesiphumo esibandayo sokuphela okubandayo, kwaye ngokuchaseneyo, kunokugqitywa ukuba i-cold output ye-Qc ilingana nomahluko phakathi kobushushu obukhutshwe yisiphelo esishushu kunye negalelo lamandla ombane.

Qh=P+Qc

Qc=Qh-P

Indlela yokubala yobuninzi bamandla okupholisa thermoelectric

A.1 Xa iqondo lobushushu ekupheleni Th yi 27℃±1℃, umahluko lobushushu △T=0, kwaye I=Imax.

Awona mandla okupholisa aphezulu Qcmax(W) abalwa ngokwefomula (1) : Qcmax=0.07NI

Apho i-N — i-logarithm yesixhobo sombane we-thermoelectric, I — umahluko omkhulu wobushushu obuphezulu besixhobo (A).

A.2 Ukuba ubushushu bomhlaba oshushu yi-3 ~ 40 ℃, amandla okupholisa aphezulu e-Qcmax (W) kufuneka alungiswe ngokwefomula (2).

Qcmax = Qcmax×[1+0.0042(Th--27)]

(2) Kwifomula: Qcmax — ubushushu bomphezulu oshushu Th=27℃±1℃ ubuninzi bamandla okupholisa (W), Qcmax∣Th — ubushushu bomphezulu oshushu Th — amandla okupholisa aphezulu (W) kubushushu obulinganisiweyo ukusuka kwi-3 ukuya kwi-40℃

Umfanekiso we-TES1-12106T125

Ubushushu becala elishushu yi-30 C,

Ubukhulu: 6A,

Umax: 14.6V

Ubukhulu: 50.8 W

Ubuninzi beDelta T: 67C

I-ACR:2.1±0.1Ohm

Ubungakanani: 48.4X36.2X3.3mm, ubungakanani bomngxuma ophakathi: 30X17.8mm

Itywinwe: Itywinwe nge704 RTV (umbala omhlophe)

ucingo: 20AWG PVC, ukumelana lobushushu 80℃.

Ubude bocingo: 150mm okanye 250mm

Imathiriyeli yeThermoelectric: Bismuth Telluride