N'chifukwa chiyani refrigerant ndi chothandizira firiji?

TheMafiriji oongokandi mafiriji yopingasa pa msika ntchito mpweya kuzirala, firiji, etc., koma onse ndi mitundu yosiyanasiyana ya refrigerants R600A ndi R134A. Inde, "chothandizira" apa chikutanthauza kusamutsidwa kwa mphamvu, ndiko kuti, vaporization ndi condensation kukwaniritsa kutentha kutentha. Kwa anthu wamba, timangofunika kumvetsetsa kuti ndi gawo lofunika kwambiri la firiji.

Kuti zikhale zosavuta kuti mumvetsetse, mfundo yofunikira ya firiji imadalira kuzungulira kwa Carnot kudzera mu njira zinayi zofunika:

(1) Kupanikizika (kutentha kwambiri ndi mpweya wothamanga kwambiri)

The kompresa compresses otsika kutentha ndi otsika-anzanu refrigerant mpweya kukhala mkulu-kutentha ndi mkulu-anzanu mpweya, kuchititsa kutentha kwake kukwera kwambiri (mwachitsanzo kuchokera -20 ° C mpaka 100 ° C).

(2) Condensation (kutentha kutentha kumakhala madzi)

Kutentha kwakukulu ndi mpweya wothamanga kwambiri umalowa mu condenser, umatulutsa kutentha kupyolera mu fani yozizirira, ndipo umasanduka kutentha kwabwino ndi madzi othamanga kwambiri pambuyo pozizira.

(3) Kukula (kuchepetsa kuthamanga kwa vaporization endothermic)

Madzi othamanga kwambiri akadutsa mu valve yowonjezera, kupanikizika kumatsika kwambiri, kumatuluka pang'ono ndikutentha kutentha mozungulira evaporator, kuchititsa kuti mkati mwa firiji kuzizire.

(4) Evaporation (kutentha kochepa ndi mpweya wochepa)

The refrigerant madzi pa kutentha otsika ndi kuthamanga kwathunthu vaporized mu evaporator, kuyamwa kutentha mu firiji, ndiyeno kubwerera kwa kompresa kumaliza mkombero.

Panthawi imeneyi, ntchito yofunika kwambiri ya refrigerant imaonekera mu gawo kusintha kutentha mayamwidwe ndi exotherm, ndi ndondomeko vaporization kutentha mayamwidwe kuziziritsa firiji.

Zindikirani:Refrigerant imasinthidwanso mu dongosolo lotsekedwa ndipo imagwiritsidwa ntchito mobwerezabwereza popanda kudyedwa. Zake zakuthupi (mwachitsanzo, kuwira kochepa, kutentha kobisika kwambiri) zimatsimikizira kuzizira bwino.

Apa ndikuyenera kukufotokozerani kuti ogwiritsa ntchito akhoza kusokoneza lingaliro la "chothandizira" ndi "chapakati". Mafiriji satenga nawo mbali pamachitidwe amankhwala, koma amasamutsa mphamvu kudzera mukusintha kwa gawo la thupi, koma magwiridwe awo amakhudza mwachindunji kuziziritsa (monga bwino, kutentha), monga kufunikira kwa chothandizira pamachitidwe amankhwala, koma njira ziwirizi ndizosiyana kotheratu.

Mawonekedwe:

(1) Ndiosavuta kuwunda ndi kuyamwa kutentha kutentha (monga R600a powira - 11.7 ° C), imakhala ndi kukhazikika kwamankhwala, ndipo sikophweka kuwola kapena kuwononga zida.

(2) Kugwirizana ndi chilengedwe: Chepetsani kuwonongeka kwa ozoni layer (mwachitsanzo R134a ilowa m’malo mwa R12).

Mafiriji ndiye njira yayikulu yopangira firiji yamalonda. Amatulutsa kutentha kupyolera mu kusintha kwa gawo, mofanana ndi "onyamula kutentha", omwe amamasula kutentha mkati mwa firiji kupita kunja pozungulira, motero kusunga malo otentha.