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Nthawi zambiri, kusungirako kuzizira kumatsitsidwa ndi makina a firiji, pogwiritsa ntchito zakumwa zomwe zimakhala ndi kutentha kochepa kwambiri (ammonia kapena Freon) monga zoziziritsira. Zamadzimadzi izi zimasanduka nthunzi pansi pa kupanikizika kochepa komanso kuwongolera makina, kutengera kutentha mkati mwa chipinda chosungiramo, potero kukwaniritsa cholinga chozizira ndi kuchepetsa kutentha.
Firiji yamtundu wa compression ndiyofala kwambiri, yomwe imakhala ndi compressor, condenser, throttle valve, ndi chitoliro cha evaporation. Malingana ndi momwe chitoliro cha evaporation chimayikidwira, chikhoza kugawidwa kukhala kuzizira kwachindunji ndi kuzizira kosalunjika. Kuziziritsa kwachindunji kumayika chitoliro cha evaporation mkati mwa chipinda chosungiramo chozizira, pomwe choziziritsa chamadzi chimatengera kutentha mkati mwa chipindacho kudzera mupopi ya evaporation ndikuziziritsa. chipangizo. Mpweya, utakhazikika ndi chitoliro cha evaporation mkati mwa chipangizo chozizira, umatumizidwanso m'chipinda kuti muchepetse kutentha.
Ubwino wa njira yoziziritsira mpweya ndikuti umazizira mofulumira, kutentha m'chipinda chosungiramo zinthu kumakhala kofanana kwambiri, komanso kumatha kuchotsa mpweya woipa monga carbon dioxide wopangidwa panthawi yosungira.
Firiji yamtundu wa compression ndiyofala kwambiri, yomwe imakhala ndi compressor, condenser, throttle valve, ndi chitoliro cha evaporation. Malingana ndi momwe chitoliro cha evaporation chimayikidwira, chikhoza kugawidwa kukhala kuzizira kwachindunji ndi kuzizira kosalunjika. Kuziziritsa kwachindunji kumayika chitoliro cha evaporation mkati mwa chipinda chosungiramo chozizira, pomwe choziziritsa chamadzi chimatengera kutentha mkati mwa chipindacho kudzera mupopi ya evaporation ndikuziziritsa. chipangizo. Mpweya, utakhazikika ndi chitoliro cha evaporation mkati mwa chipangizo chozizira, umatumizidwanso m'chipinda kuti muchepetse kutentha.
Ubwino wa njira yoziziritsira mpweya ndikuti umazizira mofulumira, kutentha m'chipinda chosungiramo zinthu kumakhala kofanana kwambiri, komanso kumatha kuchotsa mpweya woipa monga carbon dioxide wopangidwa panthawi yosungira.
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