Wosamveracooler boxndi chipangizo chomwe sichifuna gwero lamagetsi lakunja ndipo chimagwiritsa ntchito zipangizo zotchinjiriza ndi mafiriji kuti zisunge kutentha kwamkati. Mbiri yake yachitukuko imatha kuyambika kumapeto kwa zaka za zana la 19. Ndi kupita patsogolo kwa teknoloji ndi kusintha kwa msika, pang'onopang'ono zasintha kukhala chida chofunikira chomwe chimagwiritsidwa ntchito kwambiri pazakudya, mankhwala ndi madera ena lero.
Kukula koyamba
Lingaliro la kungokhala chetekoelboxinayamba kuonekera chakumapeto kwa zaka za m’ma 1800, pamene inkagwiritsidwa ntchito makamaka potengera chakudya. Bokosi loyambirira la firiji limagwiritsa ntchito ayezi wachilengedwe ngati firiji, ndipo limagwiritsa ntchito zida zoziziritsa kukhosi kuti achedwetse kusungunuka kwa ayezi kuti asatenthetse mkati mwa bokosilo. Ngakhale njira iyi ndi yosavuta, imakhala ndi zotsatira zochepa pamayendedwe akutali.
Kupita patsogolo kwaukadaulo
Kumayambiriro kwa zaka za m'ma 1900, ndikukula kosalekeza kwa makampani opanga mankhwala, madzi oundana owuma ( carbon dioxide ) anayamba kugwiritsidwa ntchito m'mabokosi a firiji. Kugwiritsa ntchito madzi oundana owuma kunapangitsa kuti firiji ikhale yabwino komanso nthawi yotumikiramabokosi a refrigeration. Nthawi yomweyo, zida zodzitchinjiriza zakhala zikukonzedwa mosalekeza, kuyambira pamitengo yoyambira ndi udzu mpaka mapulasitiki a thovu pambuyo pake ndi matabwa otchingira vacuum, ndipo magwiridwe antchito adawongoleredwanso bwino.
Ntchito zamakono
M'zaka za zana la 21, ndi chitukuko chowonjezereka cha sayansi ndi luso lamakono, mabokosi osungiramo firiji apita patsogolo kwambiri pazinthu ndi mapangidwe. Mafiriji amasiku ano osagwira ntchito nthawi zambiri amagwiritsa ntchito zida zosinthira magawo (PCM) ngati mafiriji, omwe amatha kuyamwa kapena kutulutsa kutentha kwakukulu pamtundu wina, potero amasunga kutentha kokhazikika mkati mwa bokosi. Kuphatikiza apo, kugwiritsa ntchito zida za nano-insulation kwabweretsa magwiridwe antchito afiriji pamlingo watsopano.
Kufuna msika
Passive cooler box amagwiritsidwa ntchito kwambiri m'minda yazakudya ndi mankhwala. Poyendetsa chakudya, amatha kuonetsetsa kuti chakudya chatsopano chimakhalabe chatsopano panthawi yaulendo wautali. M'munda wamankhwala, makamaka pamayendedwe a katemera ndi biologics, mafiriji osagwira ntchito amatha kupereka malo okhazikika otsika kutentha kuti atsimikizire kuti mankhwalawa ndi othandiza komanso otetezeka.
Pakali pano, kugwiritsa ntchito mafiriji kukuchulukirachulukira. Tikamatuluka panja, mafiriji osagwira ntchito amatha kutenthetsa chakudya ndi zakumwa zathu popanda kutaya chakudya chatsopano. Pali zosankha zambiri zamaluso ndipo ndizoyenera zochitika zosiyanasiyana.
Ngati mukufuna kudziwa zambiri kapena kugula nyali zamagalimoto, chonde lemberani akuluakulu a WWSBIU mwachindunji:
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Nthawi yotumiza: Sep-09-2024