Yuav ua li cas thermal tswj lub tub yees lub voj voog?
Dab tsi yog cov txheej txheem ua haujlwm ntawm lub voj voog tub yees?
1. Lub voj voog ntawm tub yees
Cov tub yees, ua ib feem tseem ceeb ntawm lub neej niaj hnub no, yog siv dav hauv cov khoom siv tub yees xws li tub yees, cua txias, txias cia, thiab lwm yam.
Lub voj voog ntawm lub tub yees yog cov txheej txheem ntawm lub cev uas hloov cov cua sov los ntawm cov khoom kub qis (xws li sab hauv lub tub yees, txias cia, thiab lwm yam) rau cov khoom kub (xws li qhov chaw sab nraum zoov), yog li ua tiav cov txiaj ntsig ntawm tub yees thiab cua txias.
2. Cov khoom tseem ceeb ntawm lub voj voog tub yees
Lub voj voog lub tub yees yog tsim los ntawm plaub qhov tseem ceeb: compressor, condenser, expansion valve thiab evaporator. Cov plaub qhov no ua tiav tag nrho cov txheej txheem ntawm lub voj voog tub yees los ntawm kev ntws ntawm cov tub yees.
Compressor:
Lub compressor yog lub plawv ntawm tag nrho cov tub yees lub voj voog. Nws yog lub luag haujlwm rau kev nqus cov pa uas tsis muaj qhov kub thiab qhov tsis tshua muaj siab ntawm cov tub yees vapor thiab hloov mus rau qhov kub thiab txias siab los ntawm kev siv tshuab compression.
Nyob rau hauv cov txheej txheem no, qhov kub ntawm lub tub yees nce sharply, muab cov cua sov tsim nyog rau cov txheej txheem tom ntej condensation.
Condenser:
Lub condenser yog nyob rau hauv qhov kub-kub thiab high-pressure seem ntawm lub voj voog tub yees. Tom qab tau compressed los ntawm lub compressor, lub siab-kub thiab high-pressure refrigerant gas nkag mus rau hauv lub condenser, thiab tso tawm cua sov mus rau ib puag ncig los ntawm tshav kub exchanger nrog rau sab nraud ib puag ncig (xws li cua los yog dej), yog li condensing mus rau hauv lub high-pressure kua. .
Cov txheej txheem no ua rau qhov kub thiab txias ntawm lub tub yees poob.
Expansion valve:
Lub expansion valve yog ib qho tseem ceeb ntawm kev sib txuas ntawm condenser thiab evaporator. Nws throttles thiab txo lub siab ntawm cov kua high-pressure kom cov refrigerant mus txog qhov tsim nyog qis-kub thiab qis-siab lub xeev ua ntej nkag mus rau lub evaporator.
Hauv cov txheej txheem no, qhov kub thiab siab ntawm lub tub yees yuav txo qis, npaj rau cov txheej txheem tom qab evaporation thiab nqus cua sov.
Evaporator:
Cov evaporator yog qhov qis-kub thiab qis-siab ntawm lub voj voog tub yees. Ntawm no, qhov kub thiab txias tsis tshua muaj cua txias ua kua absorbs cua sov los ntawm ib puag ncig ib puag ncig thiab hloov mus rau hauv vapor los ntawm evaporation.
Hauv cov txheej txheem no, qhov kub ntawm cov evaporator thiab nws qhov chaw ib puag ncig yuav poob qis, yog li ua tiav cov nyhuv tub yees. Cov evaporated refrigerant vapor yog nqus mus rau hauv lub compressor dua los pib ib ncig tshiab.
3. Cov txheej txheem ua haujlwm ntawm lub tub yees lub voj voog
Cov txheej txheem ua haujlwm ntawm lub tub yees lub voj voog tuaj yeem muab sau ua plaub theem: evaporation, compression, condensation thiab expansion.
Evaporation theem:
Nyob rau hauv lub evaporator, qhov qis-kub thiab qis-siab refrigerant kua absorbs tshav kub ntawm ib puag ncig ib puag ncig los ntawm evaporation thiab converts mus rau hauv vapor. Thaum lub sijhawm txheej txheem no, qhov kub thiab txias ntawm cov evaporator thiab nws qhov chaw ib puag ncig yuav poob qis heev.
Compression theem:
Cov evaporated refrigerant vapor yog nqus mus rau hauv lub compressor thiab compressed rau hauv high-temperature thiab high-pressure gas. Thaum lub sij hawm tus txheej txheem no, qhov kub ntawm lub refrigerant nce sharply.
Condensation theem:
Tom qab kub-kub thiab high-pressure refrigerant gas nkag mus rau hauv lub condenser, nws tso tawm cua sov los ntawm tshav kub pauv nrog rau sab nraud ib puag ncig thiab condenses rau hauv ib tug high-pressure kua. Thaum lub sijhawm ua haujlwm no, qhov kub thiab siab ntawm lub tub yees ob qho tib si poob.
Expansion theem:
Lub siab-siab kua refrigerant nkag mus rau hauv lub evaporator tom qab throttling thiab txo lub siab los ntawm lub expansion valve, thiab pib cov txheej txheem evaporation thiab cua sov dua. Thaum lub sijhawm txheej txheem no, qhov kub thiab txias ntawm lub tub yees tau txo qis, npaj rau kev hloov pauv tshiab.
4. Cov txheej txheem ua haujlwm ntawm lub tub yees lub voj voog
Ib qho ntawm qhov tseem ceeb ntawm lub voj voog tub yees yog qhov coefficient ntawm kev ua haujlwm (COP), uas qhia txog kev ua haujlwm ntawm lub tub yees.
Qhov siab dua tus nqi COP, qhov muaj peev xwm txias ntau dua lub tub yees tuaj yeem tsim tau thaum siv tib lub zog. Hauv kev siv tswv yim, txhawm rau ua kom tau txais txiaj ntsig zoo ntawm kev lag luam thiab kev tiv thaiv ib puag ncig, cov kev txwv xws li qhov txias cia txias feem ntau hloov kho raws li qhov xav tau tiag tiag los xyuas kom meej tias tus nqi COP tseem nyob hauv qhov tsim nyog.
5. Ntau yam ntawm cov tub yees lub voj voog
Cov voj voog tub yees tsis txwv rau cov voj voog compression tub yees saum toj no, tab sis kuj suav nrog cov voj voog nqus cov tub yees, lub voj voog adsorption tub yees, lub voj voog dav hlau tub yees, thiab semiconductor tub yees.
Cov kev sib txawv ntawm cov tub yees sib txawv no muaj lawv tus kheej cov yam ntxwv thiab daim ntawv thov scenarios, thiab ua ke ua ib lub tshuab tub yees nplua nuj.
Cov ntsiab lus:
Lub voj voog lub tub yees yog ib qho txheej txheem ntawm lub cev. Tag nrho cov txheej txheem yog ua tiav los ntawm kev sib koom ua haujlwm ntawm cov khoom tseem ceeb xws li compressors, condensers, expansion li qub, thiab evaporators. Lub refrigerant circulates tsis tu ncua nyob rau hauv lub kaw tub yees system, ua tiav lub hom phiaj ntawm kev xa cov cua sov los ntawm cov khoom uas tsis kub-kub mus rau high-temperature khoom.
