Iyo firiji musimboti wefiriji yakavakirwa pane reverse Carnot cycle, umo refrigerant ndiyo yepakati svikiro, uye kupisa mufiriji kunotakurwa kuenda kunze kuburikidza nechikamu chekuchinja maitiro e vaporization endothermic - condensation exothermic.
Key parameters:
①Boiling point:Inotarisa tembiricha yekudonha (iyo yakadzikira nzvimbo yekubikira, inodzika tembiricha yefiriji).
②Condensing pressure:Iyo yakakwirira yekumanikidza, iyo yakakura iyo compressor mutoro (inokanganisa kushandiswa kwesimba uye ruzha).
③Thermal conductivity:Iyo yakakwirira yekupisa conductivity, inokurumidza kukurumidza kutonhora.
Iwe unofanirwa kuziva iwo mana makuru emhando dzefiriji kutonhora kunyatsoshanda:
1.R600a (isobutane, hydrocarbon refrigerant)
(1)Kuchengetedza kwezvakatipoteredza: GWP (Global Warming Potential) ≈ 0, ODP (Ozone Destruction Potential) = 0, maererano neEuropean Union F - Gesi mitemo.
(2)Kushanda kwefiriji: nzvimbo yekubikira - 11.7 °C, inokodzera imba yefiriji firiji compartment (-18 °C) zvinodiwa, unit volume volume firiji inosvika 30% yakakwirira kupfuura R134a, compressor displacement idiki, uye simba rekushandisa rakaderera.
(3)Tsanangudzo yenyaya: Iyo 190L firiji inoshandisa R600a, ine simba rezuva nezuva rekushandisa 0.39 madhigirii (simba rekushanda kwesimba 1).
2.R134a (tetrafluoroethane)
(1)Kuchengetedza kwezvakatipoteredza: GWP = 1300, ODP = 0, European Union icharambidza kushandiswa kwemidziyo mitsva kubva ku2020.
(2)Kushanda kwefiriji: poindi yekubikira - 26.5 °C, yakaderera tembiricha kuita iri nani pane R600a, asi iyo unit yekutonhodza huwandu yakaderera, inoda hombe yekutamisa compressor.
(3) Iyo condenser pressure ndeye 50% yakakwirira kupfuura iyo yeR600a, uye iyo compressor simba rekushandisa rinowedzerwa.
3.R32 (difluoromethane)
(1)Kuchengetedza kwezvakatipoteredza: GWP = 675, inova 1/2 iyo yeR134a, asi inopfuta (kudzivirira njodzi yekudonha).
(2)Kushanda kwefiriji: nzvimbo yekubikira - 51.7 ° C, yakakodzera kune inverter air conditioners, asi condensation pressure mufiriji yakanyanyisa (kaviri yakakwirira seR600a), iyo inogona kutungamirira nyore kune compressor overload.
4.R290 (propane, hydrocarbon refrigerant)
(1)Ushamwari hwezvakatipoteredza: GWP ≈ 0, ODP = 0, ndiyo yekutanga sarudzo ye "ramangwana refrigerant" muEuropean Union.
(2)Kushanda kwefiriji: poindi yekubikira - 42 °C, unit yekutonhodza inokwana 40% yakakwira kupfuura R600a, yakakodzera mafiriza makuru ekutengesa.
Chenjerera:Mafiriji emumba anoda kuvharwa zvakasimba nekuda kwekubvira moto (ignition point 470 °C) (mutengo unowedzera ne15%).
Refrigerant inokanganisa sei ruzha rwefiriji?
Ruzha rwefiriji kazhinji runobva kucompressor vibration uye refrigerant flow ruzha. Refrigerant maitiro anokanganisa ruzha nenzira dzinotevera:
(1) High-pressure operation (condensing pressure 2.5MPa), compressor inoda yakakwirira-frequency operation, ruzha runogona kusvika 42dB (yakajairika firiji inenge 38dB), yakaderera-pressure operation (condensing pressure 0.8MPa), compressor load yakaderera, ruzha rwakaderera se36dB.
(2) R134a ine viscosity yakakwirira (0.25mPa · s), uye inowanzoita ruzha rwemhepo (yakafanana ne "hiss" inzwi) kana ichiyerera nemu capillary tube. R600a ine low viscosity (0.11mPa · s), kuyerera kwakatsetseka, uye kuderedzwa ruzha ne2dB.
Cherechedza: Firiji yeR290 inoda kuwedzera kuputika - dhizaini yehumbowo (senge yakakora furo layer), asi inogona kuita kuti bhokisi riite maungira uye ruzha rusimuke ne1 - 2dB.
Nzira yekusarudza sei firiji refrigerant type?
R600a ine ruzha rwakaderera rwekushandisa pamba, mutengo unotora 5% yemutengo wakazara wefiriji, R290 ine yakakwirira kuchengetedzwa kwezvakatipoteredza, inosangana neEuropean Union zviyero, mutengo unodhura 20% kupfuura R600a, R134a inowirirana, inokodzera mafiriji ekare, R32 haina kukura, sarudza nemazvo!
Refrigerant ndiyo "ropa" refiriji, uye rudzi rwayo runobata zvakananga kushandiswa kwesimba, ruzha, kuchengeteka uye hupenyu hwebasa. Kune vatengiwo zvavo, R600a ndiyo yakanakisa sarudzo yezvazvino kuita kwakazara, uye R290 inogona kutariswa yekutsvaga yakanyanyisa kuchengetedza kwezvakatipoteredza. Paunenge uchitenga, unogona kusimbisa rudzi rwefiriji kuburikidza nezita rezita rezita kuseri kwefriji (yakadai se "Refrigerant: R600a") kuti urege kutsauswa nemafungiro ekutengesa akadai se "frequency conversion" uye "frost - free".
Nguva yekutumira: Mar-26-2025 Views: