Fa'idodin Masu Canjin Zafi na Microchannel (MCHEs) Idan aka kwatanta da Masu Canjin Zafin Gargajiya (Masu Canjin Zafin Tuba na Aluminum Fin).
Ingantaccen Canja wurin Zafi
MCHEs sun ƙunshi ƙananan tashoshi masu kwarara na ciki- (yawanci 0.1-2 mm a diamita) da babban yanki mai girma -zuwa{4}} rabon girma. Wannan ƙira yana haɓaka hulɗa tsakanin matsakaicin canja wurin zafi (kamar firiji kamar R134a ko R404A) da farfajiyar zafin rana, yana ba da damar canjin zafi don haɓaka da 42% ko fiye idan aka kwatanta da ƙirar jan ƙarfe na gargajiya-fin ƙira. Ingantacciyar turɓayar ruwa a cikin tashoshi na microchannel yana ƙara rage juriya na zafi, yana sa MCHEs ya dace don makamashi{11}} ajiyar yanayin yanayi kamar injin daskarewa na kasuwanci da nunin kabad.
Karamin Girman da Haske
An gina shi da duk -kayan aluminium da hadedde fin{1}}tsarin bututu mai lebur (ta hanyar walda maras sumul), MCHEs sun fi ƙanƙanta da haske sosai. A matsakaita, sun mamaye 32-51% ƙasa da sarari kuma suna auna 42-61% ƙasa da jan ƙarfe na gargajiya{7}} tushen masu musayar zafi tare da ƙarfin canja wurin zafi iri ɗaya. Wannan fa'idar tana da mahimmanci ga ƙayyadaddun aikace-aikacen sarari{9}, kamar na'urar sanyaya iska, ƙaramin raka'a na firiji, ko tsarin HVAC na gida.
Ƙananan Material da Farashin Aiki
Aluminum, kayan farko na MCHEs, ya fi tsada{0} fiye da jan ƙarfe (maɓalli na masu musayar al'ada), yana rage farashin albarkatun ƙasa da kashi 20-30%. Bugu da ƙari, MCHEs suna buƙatar ƙarancin cajin firiji (har zuwa 50-70% ƙasa da ƙasa) saboda ƙaramin ƙarar su na ciki, rage dogon lokaci - kashe kuɗin aiki da kuma daidaitawa da ƙa'idodin muhalli na duniya (misali, F-Dokokin gas) waɗanda ke iyakance yawan amfani da na'urar sanyaya.
Ingantattun Dogarorin Tsari
Manyan hanyoyin masana'antu (misali, vacuum brazing ga duk-aluminum abubuwan haɗin gwiwa) suna haifar da haɗin kai maras kyau tsakanin fins da bututun lebur a cikin MCHEs, yana kawar da gibin da ke haifar da juriya na zafi ko ɗigon sanyi a cikin bututun gargajiya{3}}masu musayar wuta. Wannan tsari mara kyau kuma yana inganta juriya ga rawar jiki da hawan keke mai zafi, yana tsawaita rayuwar sabis a cikin mahalli masu ƙarfi (kamar manyan motocin firiji na hannu).
Lalacewar Microchannel Heat Exchanges (MCHEs) Idan aka kwatanta da masu musayar zafi na gargajiya
Ƙarfafa Juriya na Lalata
Abun aluminium, yayin da mara nauyi, yana da ƙarancin juriya na lalata fiye da jan ƙarfe{0} musamman a cikin mahalli masu tsauri (misali, saitunan ruwa, manyan wuraren ɗanshi, ko aikace-aikace masu ruwan acidic/alkaline). Ba tare da ƙarin maganin lalata- (misali, phenolic resin coatings), MCHEs na iya shan wahala daga aluminium oxidation ko pitting, na buƙatar ƙarin kulawa akai-akai ko sauyawa a cikin yanayi mai lalacewa.
Wahalar Kulawa Mafi Girma da Kuɗi
Haɗe-haɗe, ƙaƙƙarfan ƙira na MCHEs yana sa gyara ƙalubale. Ba kamar bututun gargajiya -masu musanya fin (inda za a iya maye gurbin ɓangarorin da suka lalace daban-daban), lahani ɗaya a cikin microchannels na MCHEs galibi yana buƙatar maye gurbin gabaɗayan naúrar. Wannan yana ƙara farashin kulawa da raguwa, musamman ga manyan aikace-aikacen masana'antu-.
Zuba Jari na Farko Mafi Girma
MCHEs suna buƙatar ingantattun fasahar kera (misali, micro{2}}extrusion don ƙwanƙolin bututu, matsananciyar matsananciyar zafi) da kayan aiki na musamman. Duk da yake farashin kayan yana da ƙasa, saka hannun jari na gaba a cikin layin samarwa shine sau 2-3 sama da wancan don masu musayar zafi na gargajiya. Wannan yana sa MCHEs ya zama ƙasa da tattalin arziƙi don ƙananan samarwa ko ƙananan ayyukan kasafin kuɗi -.
Iyakance Maɗaukaki - Ƙimar Zazzabi
Matsayin narkewar Aluminum (kimanin digiri 660) da kwanciyar hankali na thermal sun kasance ƙasa da na jan ƙarfe (madaidaicin narkewa ~ 1085 digiri). A cikin yanayin yanayin zafi mai girma - (misali, tukunyar jirgi na masana'antu, babban-samar da yanayin zafi mai zafi), MCHEs na iya samun raguwar daidaiton tsari ko ingantaccen yanayin zafi, yayin da masu musayar jan ƙarfe na gargajiya{7}}masu musayar wuta ke samun kyakkyawan aiki a ƙarƙashin irin waɗannan yanayi.
Hankalin Zaɓin Abu
Lokacin da girman tashar ya kasance <0.5 mm, bambancin aikin canja wurin zafi tsakanin kayan kamar tagulla da bakin karfe na iya kaiwa 20%. Dole ne a yi la'akari da mahimmin matakan ƙira tare da buƙatun juriya na lalata.
Riba Siffar Tashar Tasha
Siffofin tashoshi masu rikitarwa (misali, serpentine/serrated) suna ƙara ƙarfin canja wurin zafi da sau 1.2 zuwa 1.4 idan aka kwatanta da madaidaiciyar tashoshi, amma ya zama dole a daidaita cinikin{4}} na karuwar 15%-25% na raguwar matsa lamba.
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