Freon - yog ... Kub ntawm Freon. Freon nyob rau hauv tub yees

Txhua lub tsev muaj cov khoom siv rau lub ntau lawm thiab efficiency ntawm xws li ib tug yam khoom uas yog siv raws li freon. Qhov no tshuaj yog hu ua ib qho zoo heev refrigerant siv nyob rau hauv tag nrho cov fridges li ntawd, koj yuav cia cov zaub mov thiab npaj txhij noj mov ntev tshaj li ntawm ambient kub. Qhov tsab xov xwm no yuav qhia tau, Freon - yog hais tias nyob rau hauv qhov teeb meem nyob qhov twg nws yog siv, dab tsi kub nws yog.

Keeb kwm ntawm foundations

Qhov chaw sib txawv lub npe ua ntej ob hnub synthesis Freon - 1928 thiab 1931, xyoo. Yog hais tias cov hnub yug ntawm cov refrigerant 1928 th xyoo. Nws yog ces ib tug zoo heev chemist lub tuam txhab Frigidaire, uas yog ib tug chaw hauj lwm ntawm cov li General cov Motors lwm yam, Thomas Midgley, coj "txuj ci tseem ceeb tshuaj" thiab muab nws lub npe "Freon". Laus engineers koom nyob rau hauv industrial qhuav no gas, tau nkag mus rau los Freon-12 raws li ib tug «R» (nyob rau hauv translation «refrigerant» stands rau ib tug refrigerant los yog txias). Qhov thib ob hnub nrog lub advent ntawm Freon nepravlno khi, vim hais tias twb nyob rau hauv 1930 qhov ruaj tig Tshuaj Company, uas muaj mus ua hauj lwm tau raug tsim yuav tsum tau teem rau zus tau tej cov no cov khoom.

Freon - dab tsi yog qhov no?

Ib tug sib tov ntawm ethane thiab methane li cov fluorinated tsawg molecular yuag hydrocarbon derivatives qhov twg hydrogen atoms yuav tsum tau pawg los ntawm fluorine, tshuaj chlorine ua, bromine. Lug siv nyob rau hauv tub yees rau lwm (tub yees, khov nab kuab, cua txias thiab thiaj li nyob. N). Muaj ntau zem, Freon - yog ib cov roj los yog ib tug kua? Cov lus teb yog: lub substance yuav muaj ob lub cev lub xeev.

Feem ntau hom Freon

Science paub ntau tshaj 40 hom ntawm cov tshuaj yeeb dej caw, feem ntau ntawm uas yog tau industrially. Freon kub uas nws boils, txhua tus tsiaj nws muaj nws tus kheej:

• R11 - trichlorofluoromethane (t nrog boiling 23,8 ° C).
• R12 - difluorodichloromethane (nrog rhuab t reflux -29,8 ° C).
• R13 - trifluorochloromethane (nrog rhuab t reflux -81,5 ° C).
• R14 - tetrafluoromethane (nrog rhuab t reflux -128 ° C).
• R134A - tetrafluoroethane (boiling rhuab nrog t -26,3 ° C).
• R22 - chlorodifluoromethane (nrog rhuab t reflux -40,8 ° C).
• R600A - isobutane (nrog rhuab t reflux -11,73 ° C).
• R410A - hloroftorokarbonat (nrog rhuab t reflux -51,4 ° C).

Feem ntau, tsev tub yees hauj lwm rau freon (Khladone) qib R-22, kom muaj thiab coj mus muag siv R-13 hom.

Freon - yog ib tug txaus ntshai tshuaj rau tib neeg?

Yuav luag tag nrho cov hom ntawm cov khoom muaj tsis zoo ib kub npau npau, txawm li cas los, thiab nws yog siv nyob rau hauv lub txias ntsiab ntawm lub tsev khoom siv, raws li cov voom caij nyob rau hauv cov roj cartridges, huab cua fresheners thiab lwm yam aerosols. Yog li ntawd thaum txau lub tog raj kheej nws tus kheej yog txias thiab Freon nkag mus rau hauv cov huab cua. Yog hais tias lub refrigerant yog tsis rhuab rau 250 degrees (nyob rau hauv qhov kub, tso tej yam tshuaj lom) nws ua mob ab tsi rau tib neeg, tsis muaj peev xwm yuav hais tau tias lub ozone txheej. Lub lwj cov khoom txov nws. Lub ntsiab ua ozone qhov yog qhov ntau lawm thiab kev siv ntawm Freon nrog ib tug high school cov ntsiab lus ntawm cov tshuaj ions thiab bromine. To ntawm tshuaj nyob rau hauv tsev neeg cov khoom siv thiab tsis hnov tsw tsis tau kuaj pom, me me koob tshuaj rau ib tug neeg muaj tsis ntxim.

Rau rov qab ntawm lub ozone layer ntawm lub ntiaj teb thiab txo tus zus tau tej cov teeb meem CFCs UN lub teb chaws kos npe thiab ratified Montreal raws tu qauv.

Yuav ua li cas yog lub freon nyob rau hauv tub yees?

Niaj hnub nimno compressor tub yees uas hais nyob rau hauv daim ntawv ntawm cov koob yees duab muab tso rau hauv lub evaporator, uas muaj xws li ib tug refrigerant. Qhov no tshuaj thaum lub sij hawm boiling thiab vaporization absorbs tshav kub los ntawm lub chamber thiab nyob rau hauv lub condensation hloov nws mus rau cov ib puag ncig. Vim hais tias ntawm no huab cua yog txias mus rau cov yam kub, thiab cov roj rov qab mus rau lub compressor thiab hloov nws lub xeev ntawm aggregation nyob rau hauv ib cov kua. Freon nyob rau hauv lub tub yees yog cia li no evaporator. Nyob rau hauv lwm yam lus, nws yog ib qho tseem ceeb feem ntawm lub cev, ua tsaug rau uas cov cua txias lag ntawm lub tub yees tsev.

Yuav ua li cas koj puas paub txog lub los ntawm Freon los ntawm lub fridge

Nws yog tseeb hais tias qhov no tshuaj - ib qho ntawm lub ntsiab Cheebtsam ntawm cov hauj lwm ntawm cov khoom siv. Freon to tau nyob rau hauv kev puas tsuaj rau cov khoom thiab lub cev tsis siv nws rau lwm yam hom phiaj. Feem ntau yog vim li cas rau qhov teeb meem no - lub evaporator raj puas tsuaj los yog raug tsis xws luag. Vim qhov no yog ib tug nrov heev nthe roj, ib tug ntxhiab, nws yog tsis yooj yim sua los xyuas txog cov olfactory receptors.

Txawm li cas los, muaj ib co cim uas qhia tus los. Freon nyob rau hauv lub tub yees yog nyob rau hauv siab, thiab thaum twg lub puas raj evaporator, nws maj mam pib lub caij nplooj zeeg. Thiaj li, nyob rau hauv lub tub yees thiab khov chamber cua kub ntawm lub nce, thiab purged sai sai pib deteriorate. Qhov no yog tus thawj kos npe tias koj yuav tau mus xyuas lub sam xeeb ntawm lub txias system ntawm lub twj paj nruag. Raws li twb tau hais, lub Freon yog tsis txaus ntshai rau txiv neej nyob ib tug kub tsis siab tshaj 250 degrees, thiab sov nws mus rau ib tug kub nyob rau hauv tsev yog tsis tau.

Qhov feem ntau heev qhov chaw ntawm refrigerant to

Ua ntej ntawm tag nrho cov - qhov no yeeb nkab pob qij txha. Nyob rau hauv txhua soldering peev xwm yuav tsim raws li lub microcracks vim tas mus li lag luam los ntawm cov khoom thiab vim hais tias ntawm lub Hoobkas sib yuav. Tsis tas li ntawd ntau Freon to nyob rau hauv qhov chaw txuas hlab evaporator tub yees thiab freezer. Sealing yuav kuaj tau los ntawm rov qab los kab, uas txuas rau hauv lub plawv ntawm lub tub yees thiab lub evaporator.

Yuav ua li cas mus kho ib tug los?

Filling freon tub yees nyob rau hauv tsev yog tsis tau tsis tau cov kev pab los ntawm ib tug kws. Txij li thaum lub xav tau tshwj xeeb cov khoom thiab cov ntaub ntawv (nqus tsev twj, soldering burner dispenser manifold nrog gauges, ib tug hlau lo, tshwj xeeb flux) rau cov hauj lwm. Rau cov nrhiav kom tau ntawm to ntawm lub hlab siv ib tug tshwj xeeb ntaus ntawv uas tsa ib tug hlau ntes. Tom qab tus tswv qhia hais tias qhov kev raug mob thiab cov kev cai sib khi feem, xa to, lub tshuab nqus tsev twj tso kua mis pumped cov pa roj thiab hnav khaub ncaws dua. Sau tshwm sim ntawm lub zais pa kev twb kev txuas nrog cov roj mus rau lub nozzle nyob rau lub casing ntawm lub tub yees compressor, los ntawm ib tug capillary raj kev twb kev txuas yog kaw qhov tseem ceeb.

Tom qab ntawd, ib tug freon tub yees dua pib circulate kom zoo thiab qhov kub thiab txias nyob rau hauv lub lag yog teev nyob rau hauv raws li cov qauv rau tub yees kiag li lawm.