Lub hauv paus ntsiab lus ntawm lub tub yees txias yog raws li lub voj voog Carnot rov qab, uas cov tub yees txias yog lub hauv paus nruab nrab, thiab cov cua sov hauv lub tub yees raug thauj mus rau sab nraud los ntawm cov txheej txheem hloov pauv theem ntawm vaporization endothermic - condensation exothermic.
Cov Ntsiab Lus Tseem Ceeb:
①Kub taw tes:Txheeb xyuas qhov kub ntawm kev ua pa (qhov kub tsawg dua, qhov kub ntawm kev txias qis dua).
②Lub zog ua kom sib xyaw:Qhov siab dua qhov siab, qhov ntau dua ntawm lub compressor load (cuam tshuam rau kev siv hluav taws xob thiab suab nrov).
③Kev ua tau zoo ntawm cov cua sov:Qhov siab dua ntawm cov thermal conductivity, qhov ceev dua qhov txias.
Koj yuav tsum paub 4 hom kev ua haujlwm txias ntawm cov khoom siv txias:
1. R600a (isobutane, hydrocarbon refrigerant)
(1)Kev tiv thaiv ib puag ncigGWP (Lub Peev Xwm Ua Rau Ntiaj Teb Sov) ≈ 0, ODP (Lub Peev Xwm Ua Rau Ozone Puas Tsuaj) = 0, raws li European Union F - Cov Cai Tswjfwm Roj.
(2)Kev ua haujlwm ntawm lub tub yees txias: qhov kub npau - 11.7 ° C, tsim nyog rau lub tub yees hauv tsev (-18 ° C) qhov yuav tsum tau ua, qhov ntim ntawm lub tub yees muaj peev xwm yog li 30% siab dua R134a, qhov hloov pauv compressor me me, thiab kev siv hluav taws xob tsawg.
(3)Kev piav qhia txog rooj plaubLub tub yees 190L siv R600a, nrog rau kev siv hluav taws xob txhua hnub ntawm 0.39 degrees (kev siv hluav taws xob theem 1).
2.R134a (tetrafluoroethane)
(1)Kev tiv thaiv ib puag ncig: GWP = 1300, ODP = 0, European Union yuav txwv tsis pub siv cov khoom siv tshiab txij xyoo 2020.
(2)Kev ua haujlwm ntawm lub tub yees txias: qhov kub npau - 26.5 ° C, kev ua haujlwm kub qis zoo dua R600a, tab sis lub peev xwm txias ntawm chav tsev qis, xav tau lub tshuab compressor loj.
(3) Lub condenser siab dua 50% dua li ntawm R600a, thiab kev siv zog ntawm compressor nce ntxiv.
3.R32 (difluoromethane)
(1)Kev tiv thaiv ib puag ncigGWP = 675, uas yog 1/2 ntawm R134a, tab sis nws yooj yim hlawv (kom tiv thaiv kev pheej hmoo ntawm kev xau).
(2)Kev ua haujlwm ntawm lub tub yees txias: qhov kub npau - 51.7 ° C, tsim nyog rau cov cua txias inverter, tab sis lub siab ntawm cov dej noo hauv lub tub yees siab dhau (ob npaug ntawm R600a), uas tuaj yeem ua rau lub compressor overload.
4. R290 (propane, hydrocarbon refrigerant)
(1)Kev phooj ywg ib puag ncigGWP ≈ 0, ODP = 0, yog thawj qhov kev xaiv ntawm "yav tom ntej refrigerant" hauv European Union.
(2)Kev ua haujlwm ntawm lub tub yees txias: qhov kub npau - 42 ° C, lub peev xwm txias ntawm chav tsev siab dua R600a 40%, tsim nyog rau cov tub yees loj.
Ceeb Toom:Cov tub yees hauv tsev yuav tsum tau kaw kom nruj vim nws yooj yim kub hnyiab (qhov kub hnyiab yog 470 °C) (tus nqi nce 15%).
Cov khoom txias ua rau lub suab nrov ntawm lub tub yees txias li cas?
Lub suab nrov ntawm lub tub yees feem ntau yog los ntawm kev co ntawm lub compressor thiab lub suab nrov ntawm cov tub yees. Cov yam ntxwv ntawm cov tub yees cuam tshuam rau lub suab nrov hauv qab no:
(1) Kev ua haujlwm siab (siab condensing 2.5MPa), lub compressor xav tau kev ua haujlwm siab, lub suab nrov tuaj yeem ncav cuag 42dB (lub tub yees ib txwm muaj li 38dB), kev ua haujlwm siab qis (siab condensing 0.8MPa), lub compressor load qis, lub suab nrov qis li 36dB.
(2) R134a muaj viscosity siab (0.25mPa · s), thiab nws yooj yim rau lub suab nrov throttling (zoo ib yam li "hiss" suab) thaum ntws los ntawm lub raj capillary. R600a muaj viscosity qis (0.11mPa · s), ntws du dua, thiab txo lub suab nrov los ntawm kwv yees li 2dB.
Lus Cim: Lub tub yees R290 yuav tsum ntxiv ib qho kev tsim uas tiv thaiv tau kev tawg (xws li ib txheej ua npuas ncauj tuab), tab sis nws yuav ua rau lub thawv nrov thiab lub suab nrov nce ntxiv 1 - 2dB.
Yuav ua li cas xaiv hom tub yees txias?
R600a muaj suab nrov qis rau kev siv hauv tsev, tus nqi suav txog 5% ntawm tag nrho cov nqi ntawm lub tub yees, R290 muaj kev tiv thaiv ib puag ncig siab, ua tau raws li European Union tus qauv, tus nqi kim dua R600a 20%, R134a sib xws, haum rau cov tub yees qub, R32 tsis paub tab, xaiv kom zoo!
Cov tub yees yog "ntshav" ntawm lub tub yees, thiab nws hom cuam tshuam ncaj qha rau kev siv hluav taws xob, suab nrov, kev nyab xeeb thiab lub neej ua haujlwm. Rau cov neeg siv khoom ib txwm, R600a yog qhov kev xaiv zoo tshaj plaws rau kev ua haujlwm tiav tam sim no, thiab R290 tuaj yeem suav hais tias yog kev nrhiav kev tiv thaiv ib puag ncig hnyav. Thaum yuav khoom, koj tuaj yeem paub meej hom tub yees los ntawm lub logo nameplate nyob rau sab nraub qaum ntawm lub tub yees (xws li "Refrigerant: R600a") kom tsis txhob raug dag los ntawm cov tswv yim kev lag luam xws li "zaus hloov pauv" thiab "tsis muaj te".
Lub sijhawm tshaj tawm: Lub Peb Hlis-26-2025 Cov neeg saib: