Pfungwa Yekutanga yeMuchina weFriji
Pendauluan
Kuisa firiji ndeimwe yehunyanzvi hwakakosha hwetekinoroji muhupenyu hwemazuva ano. Kubva kumafiriji ekicheni kusvika kuma air conditioning system muzvivakwa zvemarefu, kuisira firiji kwakachinja nzira yatinochengetedza chikafu, kuchengetedza nyaradzo, uye kunyangwe indasitiri yese. Kuti tinzwisise mashandiro anoita kuisira firiji, tinofanira kuongorora pfungwa huru dzetekinoroji iyi, kusanganisira misimboti ye thermodynamics, zvikamu zvakakosha, uye mhando dzakasiyana dzefiriji.
Nheyo dzeThermodynamics
Pfungwa huru yechero sisitimu yekutonhodza yakadzika midzi mumisimboti yethermodynamics. Sisitimu yega yega yekutonhodza inoshanda zvichibva pamutemo wechipiri wethermodynamics, uyo unotaura kuti kupisa kunowanzo yerera kubva kunzvimbo dzine tembiricha yakakwira kuenda kunzvimbo dzine tembiricha yakaderera. Masisitimu ekutonhodza anoshanda achipesana nekuyerera kwechisikigo uku nekushandisa simba rekunze kufambisa kupisa kubva kunzvimbo dzinotonhora kuenda kunzvimbo dzinopisa.
Kutenderera kweFiriji
Kutenderera kwefiriji ndiyo musimboti wekushanda kwefiriji. Kazhinji ine matanho mana makuru:
1. Kudzvanywa kweGasi: Maitiro aya anotanga mucompressor, uko refrigerant iri muchikamu chegasi inodzvanywa. Maitiro aya anowedzera kumanikidzwa kwayo nekupisa.
2. Kunyungudika: Gasi rine simba guru rinozopfuura nemumuchina unonyungudika, kazhinji kacho jira rine zvimbi zvinotonhodzwa nemhepo kana mvura. Padanho iri, gasi rinoburitsa kupisa kunzvimbo yakapoteredza uye rinochinja chikamu kuita mvura.
3. Kuwedzera: Chinotonhodza mvura chinopfuura nepavharuvhu yekuwedzera, uko kumanikidzwa kwayo netembiricha zvinodzikira zvakanyanya. Maitiro aya anoita kuti chimwe chezvinotonhodza chidzokere kuchikamu chegasi (musanganiswa wemvura negasi).
4. Kubuda kwemvura: Musanganiswa wemufiriji unobva wapinda mu evaporator, iri munzvimbo inotonhorerwa (semuenzaniso, mufiriji). Pano, mufiriji unotora kupisa kubva munzvimbo yakapoteredza wobva wabuda zvachose kuita gasi. Maitiro aya ekutorwa kwekupisa ndiwo anopa simba rekutonhodza.
Mushure mekubuda kwemvura, gasi rinotonhorera rinodzokera kucompressor, uye kutenderera kunotanga zvakare.
Zvikamu Zvikuru zveMuchina weRefrigeration
Zvimwe zvezvinhu zvikuru zvinobatsira firiji kuti ishande mufiriji zvinosanganisira:
1. Compressor: Chimwe chezvinhu zvakakosha, compressor ine basa rekudzvanya refrigerant, kuwedzera kumanikidzwa kwayo uye kutungamira kutenderera kwefiriji.
2. Kondensa: Inobvisa kupisa kubva mufiriji uye inoichinja kubva pachikamu chegasi kuenda pachikamu chemvura. Izvi zvinowanzo kuwanikwa kunze kwechikamu chemhepo inotonhodza.
3. Vharuvhu Yokuwedzera: Inodzora kufamba kwemufiriji uye inoderedza kumanikidzwa kwemufiriji, zvichikonzera kutonhora.
4. Evaporator: Apa ndipo panoitika kutonhora kukuru. Refrigerant inotora kupisa kubva munzvimbo yainoda kutonhodza sezvo ichichinja chimiro kubva pamvura kuenda kugasi.
Mhando dzeMichina yeRefrigeration
Michina yekuisa mufiriji inogona kuiswa muzvikamu zvichienderana nerudzi rwechinhu chinoshandiswa mufiriji, nzira yekubvisa kupisa, uye mashandisirwo azvo chaiwo.
1. Muchina weKuisa muFriji Uchishandisa Vapor Compression: Uyu ndiwo mhando unonyanya kushandiswa mumhando dzakasiyana-siyana, kubva mumafiriji emumba kusvika kuma air conditioner emumaindasitiri.
2. Sisitimu yeKuisa muFriji: Sisitimu iyi inoshandisa kupisa senzvimbo huru yesimba kuti ifambise kutonhora, kazhinji inowanikwa munzvimbo dzisina magetsi, senge muzvitonhodzeri zvemucamper.
3. Chinotonhodza Chinobuda: Chinoshandisa musimboti wekubuda kwemvura kuti chitore kupisa nekudzikisa tembiricha yemhepo, iyo inoshandiswa munzvimbo dzakaoma nedzinopisa.
Refrigerant: Chinhu Chinokosha Chemichina Yekufiriji
Chimwe chezvinhu zvakakosha pamuchina wefiriji kusarudza refrigerant, iyo inofanira kunge iine hunhu hwethermodynamic hwakakodzera kutonhora.
Mamwe marudzi emafiriji anowanzoshandiswa anosanganisira:
1. MaCFC nemaHCFC (Chlorofluorocarbons nemaHydrochlorofluorocarbons): Zvaishandiswa zvakanyanya kare, mafiriji aya akakonzera kukuvara kwezvakatipoteredza zvakaita sekudzikira kweozone layer uye kudziya kwepasi rose zvekuti ikozvino akawanda akarambidzwa kana kurambidzwa.
2. HFC (Hydrofluorocarbon): Ichi ndicho chizvarwa chinotevera chezvigadziriso zvemafiriji zvine hushamwari kune nharaunda, kunyangwe zvichibatsirawo mukudziya kwepasi rose.
3. Zvishandiso zvemumafiriji zvechisikigo: Zvakadai seammonia (NH3), mahydrocarbon (akadai sepropane), uye CO2. Izvi zviri kuramba zvichinyanya kufarirwa nekuda kwekukanganisa kwazvinoita nharaunda zvishoma pane zvinogadzirwa.
Kushanda Nesimba Uye Matambudziko
Kushanda zvakanaka kwemidziyo yekufiriji inyaya yakakosha, kubva pakuona kwesimba remagetsi uye mari yekushandisa. Kuti zvibudirire zvakanyanya, dhizaini nekugadzirisa kwakakodzera kwakakosha.
Kune matambudziko akati wandei ane chekuita netekinoroji yekutonhodza, akadai se:
1. Kukanganiswa Kwezvakatipoteredza: Sarudzo yezvinobudisa magasi anotonhorera uye anodziya pasi pevhu inofanira kunyatsofungwa nezvayo.
2. Kushandiswa Kwesimba: Michina yemufiriji inoda simba kuti ishande, uye kugadzirisa mashandisirwo esimba kwakakosha zvikuru, kunyanya mumaindasitiri.
3. Kuvandudza Tekinoroji: Kuvandudzwa kwezvinhu, dhizaini yesystem, uye kudzora kupisa kuri kuramba kuchikura kuti kugadzirwe michina yekutonhodza inoshanda uye isingakuvadzi nharaunda.
Mhedziso
Kuisa firiji mufiriji kunoita basa rakakosha muhupenyu hwezuva nezuva uye mumaindasitiri emazuva ano. Kunzwisisa misimboti yekutanga yetekinoroji iyi, kusanganisira kutenderera kwefiriji nezvikamu zvayo zvakakosha, kunoita kuti tikwanise kusarudza, kushandisa, uye kuchengetedza masisitimu efiriji zviri nani. Pasi rose, matambudziko ane chekuita nekushandisa simba zvakanaka uye kukanganisa nharaunda ari kutungamira hunyanzvi hunoramba huripo mutekinoroji yefiriji. Saka, remangwana refiriji rinovimbisa kushanda zvakanaka uye kuderera kwemhedzisiro yezvakatipoteredza, zvichienderana nezvinodiwa nevanhu.
