I. Kufanizira Bwino Kusinthana kwa Kutentha: Osinthanitsa Kutentha kwa Plate Amapereka Ubwino Wofunika Kwambiri
1. Plate Heat Exchanger: Kutentha Kwambiri Kwambiri Kutentha Kwambiri
Chowotchera chimagwiritsa ntchito malata, zomwe zimapangitsa kuti madzi omwe ali m'tinjira ting'onoting'ono azipanga chipwirikiti-champhamvu kwambiri ngakhale pa manambala otsika a Reynolds, motero zimathetseratu mavuto okhudzana ndi kupitirira kwa madzimadzi ndi kusasunthika. Mphamvu yake yotengera kutentha imatha kufika pa 1,500–5,500 W/(m² mpaka kasanu){madigiri asanu) chipolopolo-ndi-zosinthira machubu. Komanso, zinthu zoziziritsa kukhosi komanso zotentha zimayenda mosamalitsa{10}m'njira yapanopa nthawi yonseyi, zomwe zimapangitsa kuti pakhale kusiyanasiyana kwa kutentha; kusiyana kwa kutentha kwapakati kumatha kukhala kotsika mpaka 1 digiri, kuwonetsetsa kusinthana kwa kutentha kwambiri. Munthawi yofanana yogwirira ntchito, izi zikutanthawuza kuchepetsa kugwiritsa ntchito mphamvu komanso kutaya pang'ono kutentha.
2. Shell-ndi-Tube Heat Exchanger: Kusinthasintha kwa kutentha kumakhala kochepa kwambiri.
Mu chipolopolo-ndi-zosinthanitsa kutentha kwa machubu, zamadzimadzi zimayenda mosiyana kupyola mbali ya chubu ndi mbali ya chipolopolo; chifukwa chake, kusanganikirana kwachipwirikiti kumakhala kofooka, zomwe zimatsogolera ku mapangidwe a madera akufa amadzimadzi ndi njira zodutsa. Zotsatira zake, mphamvu yotengera kutentha imachokera pa 300 mpaka 1000 W/(m²·digiri yokha). Kugwiritsa ntchito bwino kwa kusiyana kwa kutentha pakati pa zotengera zotentha ndi zozizira ndizochepa, ndipo kutentha kwanthawi yayitali kumapitilira madigiri 5. Kuti mukwaniritse zofunikira zofananira zotengera kutentha, malo ochulukirapo otengera kutentha ndikofunikira, zomwe zimapangitsa kuti mphamvu zonse zizigwiritsidwa ntchito kwambiri poyerekeza ndi osinthanitsa kutentha kwa mbale.
II. Kufananiza Mapangidwe ndi Mapazi: Osinthanitsa Kutentha kwa Plate Ndiwofupikitsa komanso Opepuka
1. Plate Heat Exchanger: Kukula kocheperako, kupepuka, komanso kutsika pang'ono.
Zoyatsira kutentha kwa mbale zimakhala ndi kampangidwe kakang'ono kwambiri, kokhala ndi malo osinthira kutentha pa voliyumu iliyonse kuyambira 200 mpaka 1000 m²/m³-kuposa zigoba{3}}ndi-zida za chubu. Ndi makulidwe a mbale za 0.4 mpaka 0.8 mm, kulemera kwake konse kumakhala pafupifupi-gawo limodzi mwa magawo asanu a chigoba-ndi-chosinthanitsa kutentha kwa chubu cha zinthu zofanana. Zosafuna malo ambiri oyikapo, ndi oyenera kumafakitale, nyumba, ndi mapulojekiti ang'onoang'ono{12}pamafakitale pomwe malo alibe; kuonjezera apo, amaphatikiza mtengo wotsikirapo wamayendedwe ndi kukhazikitsa, zomwe zimapereka mwayi wosiyanasiyana wotumizira kunja.
2. Shell-ndi-Tube Heat Exchanger: Voliyumu yayikulu, yokulirapo, ndipo imakhala ndi mawonekedwe akulu.
Zipolopolo-ndi-zosinthira machubu zimakhala ndi zinthu zolemetsa-zochita{3}}monga chipolopolo, chubu bundle, chubu sheet, ndi ma baffles{4}}zimapangitsa kuti zikhale zazikulu komanso zokulirapo zokhala ndi malo osinthira kutentha kwa 50–150 m²/m³. Pansi pa zinthu zofanana zosinthira kutentha, kuchuluka kwake komanso momwe amayambira zimakulirakulira kangapo kuposa{8}}mtundu wosinthira kutentha; kuonjezera apo, amafunikira kuyika maziko akulu, okhazikika, zomwe zimapangitsa kuti pakhale ndalama zambiri zoyendera, kukweza, ndi kukhazikitsa. Chifukwa chake, ndizosayenera pazochitika zamapulojekiti zomwe zili ndi zoletsa zochepa kapena zocheperako.
III. Kufananiza Kusinthasintha kwa Operating Condition: Shell-ndi-Tube Heat Exchangers Ndiwo Oyenera Kugwira Ntchito Kwambiri
1. Plate Heat Exchanger: Yoyenera pazikhalidwe zokhazikika, zofatsa.
Chifukwa cha zopinga zomwe zimaperekedwa ndi ma gaskets ndi mapangidwe a mbale, zosinthanitsa kutentha kwa mbale zimakhala ndi mphamvu zochepa zotsutsana ndi kutentha ndi kupanikizika. Magawo awo ogwiritsira ntchito nthawi zambiri amakhala ndi kutentha kwa Pang'ono kapena kofanana ndi digirii 180 ndi kupanikizika kwa Pang'ono kapena kofanana ndi 2.5 MPa. Chifukwa chake, ndi oyenera kutulutsa madzi oyera okha-monga madzi abwino, mafuta, ndi{5}}zotulutsa zosawononga zinthu{5}zosawononga{6}}ndipo ndi oyenera kugwira ntchito pang'onopang'ono zomwe zimapezeka m'makina a HVAC, zotenthetsera madzi, mafakitale opepuka, kukonza chakudya, ndi magawo ambiri amakampani. Ndiosayenera m'malo okhala ndi kutentha kwambiri, kuthamanga kwambiri, kapena zinthu zowononga kwambiri. Kuonjezera apo, njira zawo zochepetsera zowonongeka zimakhala zosavuta kutseka; Choncho, kugwiritsa ntchito zofalitsa zomwe zili ndi tinthu tating'onoting'ono kapena zonyansa kwambiri ndizoletsedwa.
2. Shell-ndi-Tube Heat Exchanger: Iyenera kugwiritsidwa ntchito movutikira monga kutentha kwambiri komanso kuthamanga kwambiri.
Chipolopolo-ndi-chosinthanitsa kutentha kwa chubu chimakhala cholimba komanso chokhazikika{2}}chosasunthika{2}}chosasunthika, chodzitamandira kuti sichingagwirizane ndi kuthamanga kwambiri komanso kutentha kwambiri; imatha kupirira zikhalidwe zogwirira ntchito zopitilira digirii 400 ndi 10 MPa. Chifukwa chake, imayima ngati chisankho chomwe chimakondedwa pamafakitale olemera monga petroleum, chemical engineering, magetsi, metallurgy, ndi nyukiliya. Chipangizocho chimadziwika ndi njira zoyenda bwino komanso kulolerana kwambiri ndi media zosiyanasiyana, zomwe zimapangitsa kuti zigwirizane ndi madzi okhala ndi matope, ma particulates, ma viscosity apamwamba, kapena zonyansa zazikulu. Kukaniza kwake kuipitsidwa ndi kutsekeka ndikopambana kwambiri kuposa kusinthanitsa kutentha kwa mbale, kuwonetsa kusinthika kwapadera kumayendedwe osiyanasiyana.
Ngati mukufuna kudziwa zambiri za mayunitsi osinthira kutentha kapena mukufuna kugula, chonde tumizani imelo kwa9988xiaoshuai@gmail.com, tidzakuyankhani pakapita nthawi titaona uthengawo!
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