Lub hauv paus ntsiab lus ntawm lub tub yees ntawm lub tub yees yog ua raws li lub voj voog rov qab Carnot, uas cov tub yees yog qhov nruab nrab nruab nrab, thiab cov cua sov hauv lub tub yees raug thauj mus rau sab nraud los ntawm cov txheej txheem hloov pauv ntawm vaporization endothermic - condensation exothermic.
Cov ntsiab lus tseem ceeb:
①Boiling point:Txiav txim siab qhov ntsuas kub evaporation (qhov qis dua qhov kub ntawm qhov kub, qhov kub ntawm lub tub yees).
②Condensing siab:Qhov siab dua, qhov ntau dua qhov compressor load ( cuam tshuam rau kev siv zog thiab suab nrov).
③Thermal conductivity:Qhov siab dua qhov thermal conductivity, qhov ceev ntawm qhov txias txias.
Koj yuav tsum paub 4 yam tseem ceeb ntawm kev ua kom txias txias txias:
1.R600a (isobutane, hydrocarbon tub yees)
(1)Kev tiv thaiv ib puag ncig: GWP (Lub Ntiaj Teb Warming Potential) ≈ 0, ODP (Ozone Destruction Potential) = 0, raws li European Union F – Gas cov cai.
(2)Txias efficiency: boiling point - 11.7 ° C, haum rau tsev neeg lub freezer compartment (-18 ° C), unit ntim tub yees muaj peev xwm yog li 30% siab tshaj R134a, compressor hloov me me, thiab lub zog noj yog tsawg.
(3)Case piav qhia: Lub tub yees 190L siv R600a, nrog kev siv hluav taws xob txhua hnub ntawm 0.39 degrees (lub zog ua haujlwm qib 1).
2.R134a (tetrafluoroethane)
(1)Kev tiv thaiv ib puag ncig: GWP = 1300, ODP = 0, European Union yuav txwv tsis pub siv cov cuab yeej tshiab los ntawm 2020.
(2)Txias efficiency: boiling point - 26.5 ° C, tsis tshua muaj kub kev ua tau zoo dua R600a, tab sis chav tsev txias muaj peev xwm yog tsawg, yuav tsum tau ib tug loj hloov compressor.
(3) Lub condenser siab yog 50% siab dua li ntawm R600a, thiab compressor zog noj yog nce.
3.R32 (difluoromethane)
(1)Kev tiv thaiv ib puag ncig: GWP = 675, uas yog 1/2 ntawm R134a, tab sis nws yog flammable (kom tiv thaiv kom tsis txhob muaj kev pheej hmoo).
(2)Txias efficiency: boiling point - 51.7 ° C, haum rau inverter cua txias, tab sis lub condensation siab nyob rau hauv lub tub yees yog siab dhau lawm (ob npaug li siab tshaj R600a), uas yuav yooj yim ua rau compressor overload.
4.R290 (propane, hydrocarbon tub yees)
(1)Environmental friendliness: GWP ≈ 0, ODP = 0, yog thawj qhov kev xaiv ntawm "cov tub yees yav tom ntej" hauv European Union.
(2)Txias efficiency: boiling point - 42 ° C, chav tsev txias muaj peev xwm 40% siab tshaj R600a, haum rau loj lag luam freezers.
Nco ntsoov:Cov tub yees hauv tsev yuav tsum tau muab kaw kom nruj vim muaj hluav taws kub nyhiab (qhov kub ntawm 470 ° C) (tus nqi nce 15%).
Lub refrigerant cuam tshuam li cas lub suab nrov ntawm lub tub yees?
Cov suab nrov ntawm lub tub yees feem ntau yog los ntawm compressor kev co thiab cov suab nrov ntawm lub tub yees. Cov yam ntxwv ntawm tub yees cuam tshuam rau lub suab nrov hauv cov hauv qab no:
(1) Kev ua haujlwm siab - siab (condensing siab 2.5MPa), lub compressor xav tau siab - zaus ua haujlwm, lub suab nrov tuaj yeem ncav cuag 42dB (cov tub yees li 38dB), qis - siab ua haujlwm (condensing siab 0.8MPa), compressor load tsawg, lub suab nrov tsawg li 36dB.
(2) R134a muaj viscosity siab (0.25mPa · s), thiab nws yooj yim rau throttling suab nrov (zoo ib yam li "hiss" suab) thaum ntws los ntawm lub raj capillary. R600a muaj viscosity tsawg (0.11mPa·s), smoother ntws, thiab txo suab nrov li 2dB.
Nco tseg: Lub tub yees R290 yuav tsum tau ntxiv qhov tawg - pov thawj tsim (xws li cov npuas npuas tuab), tab sis nws tuaj yeem ua rau lub thawv resonate thiab lub suab nrov los ntawm 1 - 2dB.
Yuav ua li cas xaiv lub tub yees txias hom?
R600a muaj suab nrov qis rau kev siv hauv tsev, tus nqi suav rau 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 yog 20% kim dua R600a, R134a yog 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 ncaj qha cuam tshuam rau kev siv hluav taws xob, suab nrov, kev nyab xeeb thiab kev pabcuam lub neej. Rau cov neeg siv khoom zoo tib yam, R600a yog qhov kev xaiv zoo tshaj plaws rau kev ua tiav tam sim no, thiab R290 tuaj yeem txiav txim siab rau kev nrhiav kev tiv thaiv ib puag ncig huab cua. Thaum koj yuav khoom, koj tuaj yeem paub meej tias hom tub yees los ntawm lub npe lub logo nyob rau sab nraum qab ntawm lub tub yees (xws li "Refrigerant: R600a") kom tsis txhob raug dag los ntawm kev lag luam cov ntsiab lus xws li "frequency conversion" thiab "frost - free".
Post lub sij hawm: Mar-26-2025 Views: