Sekondale Return Air scheme Kwa Air Conditioning System

Malo ochezera ang'onoang'ono amagetsi okhala ndi chipinda chaching'ono choyera komanso utali wocheperako wolowera mpweya womwe umagwiritsidwa ntchito kutengera njira yachiwiri yobwereranso ya air conditioning system. Chiwembu ichi chimagwiritsidwanso ntchito kwambirizipinda zoyeram'mafakitale ena monga azachipatala ndi azachipatala. Chifukwa voliyumu yolowera mpweya kuti ikwaniritse zofunikira za chinyezi choyera m'chipindacho nthawi zambiri imakhala yocheperako kuposa kuchuluka kwa mpweya wofunikira kuti ufike paukhondo, motero kusiyana kwa kutentha pakati pa mpweya woperekera ndi mpweya wobwerera kumakhala kochepa. Ngati njira yoyamba yobwereranso ikugwiritsidwa ntchito, kusiyana kwa kutentha pakati pa malo operekera mpweya ndi malo a mame a air conditioning unit ndi kwakukulu, kutentha kwachiwiri kumafunika, zomwe zimapangitsa kuti kutentha kuzizira kuthetsedwe mu njira yopangira mpweya komanso kugwiritsa ntchito mphamvu zambiri. . Ngati ndondomeko yachiwiri yobwereranso ikugwiritsidwa ntchito, mpweya wobwereranso wachiwiri ungagwiritsidwe ntchito m'malo mwa kutentha kwachiwiri kwa pulayimale yobwerera. Ngakhale kusintha kwa chiwongolero cha mpweya wobwerera ku pulayimale ndi yachiwiri kumakhala kosavuta pang'ono kusiyana ndi kusintha kwa kutentha kwachiwiri, ndondomeko yachiwiri yobwereranso yakhala ikudziwika kwambiri ngati njira yopulumutsira mphamvu yopulumutsa mphamvu m'magulu ang'onoang'ono ang'onoang'ono ndi apakatikati. .

Tengani chitsanzo cha ISO class 6 microelectronics clean workshop mwachitsanzo, malo ochitira misonkhano oyera a 1 000 m2, kutalika kwa denga ndi 3 m. Mkati mapangidwe magawo ndi kutentha tn = (23 ± 1) ℃, chinyezi wachibale φn = 50% ± 5%; The dipatimenti mpweya mpweya voliyumu ndi 171,000 m3/h, za 57 h-1 mpweya kusinthana nthawi, ndi mpweya wabwino voliyumu ndi 25 500 m3/h (amene ndondomeko utsi mpweya voliyumu ndi 21 000 m3/h, ndi zina zonse ndi Kuthamanga kwa mpweya wabwino kutulutsa mpweya). Kutentha kwanzeru mu msonkhano woyera ndi 258 kW (258 W / m2), chiŵerengero cha kutentha / chinyezi cha mpweya wozizira ndi ε = 35 000 kJ / kg, ndipo kusiyana kwa kutentha kwa mpweya wobwerera m'chipindamo ndi 4.5 ℃. Panthawi imeneyi, chachikulu kubwerera mpweya buku la
Iyi ndiyo njira yomwe imagwiritsidwa ntchito kwambiri yoyeretsera mpweya mu chipinda choyera cha makampani a microelectronics, dongosolo lamtunduwu likhoza kugawidwa makamaka mu mitundu itatu: AHU + FFU; MAU+AHU+FFU; MAU+DC (Dry coil) +FFU. Aliyense ali ndi ubwino wake ndi kuipa ndi malo oyenera, mphamvu yopulumutsa mphamvu makamaka zimadalira ntchito fyuluta ndi zimakupiza ndi zipangizo zina.

1) AHU + FFU dongosolo.

Mtundu wamtunduwu umagwiritsidwa ntchito mumakampani opanga ma microelectronics ngati "njira yolekanitsa mpweya ndi gawo loyeretsa". Pakhoza kukhala zinthu ziwiri: imodzi ndi yakuti mpweya wozizira umangogwira ntchito ndi mpweya wabwino, ndipo mpweya wabwino umanyamula kutentha ndi chinyezi chonse cha chipinda choyera ndipo umakhala ngati mpweya wowonjezera kuti ugwirizane ndi mpweya wotuluka ndi kuthamanga kwabwino. ya chipinda choyera, dongosololi limatchedwanso MAU + FFU system; The ena ndi kuti mpweya wabwino voliyumu yekha sikokwanira kukumana ozizira ndi kutentha katundu zosowa za chipinda choyera, kapena chifukwa mpweya wabwino kukonzedwa kuchokera kunja boma kuti mame mfundo yeniyeni enthalpy kusiyana kwa makina chofunika kwambiri. , ndi gawo la mpweya wamkati (wofanana ndi mpweya wobwerera) umabwereranso kumalo opangira mpweya, kusakaniza ndi mpweya wabwino wa kutentha ndi chinyezi, ndikutumizidwa ku plenum. Kusakanikirana ndi mpweya wotsalira wa chipinda choyera (chofanana ndi mpweya wobwereza wachiwiri), umalowa mu FFU unit ndikutumiza ku chipinda choyera. Kuchokera mu 1992 mpaka 1994, wolemba wachiwiri wa pepalali adagwirizana ndi kampani yaku Singapore ndipo adatsogolera ophunzira opitilira 10 kuti atenge nawo gawo pakupanga kwa US-Hong Kong joint venture SAE Electronics Factory, yomwe idatengera mtundu womaliza wa kuyeretsa mpweya komanso mpweya wabwino. Ntchitoyi ili ndi chipinda choyera cha ISO Class 5 pafupifupi 6,000 m2 (1,500 m2 yomwe idapangidwa ndi Japan Atmospheric Agency). Chipinda choyatsira mpweya chimakonzedwa mofanana ndi mbali ya chipinda choyera pambali pa khoma lakunja, ndipo kokha moyandikana ndi korido. Mpweya wabwino, mpweya wotulutsa mpweya ndi mapaipi obwerera mpweya ndiafupi komanso amakonzedwa bwino.

2) MAU+AHU+FFU scheme.

Njira yothetsera vutoli imapezeka kawirikawiri muzomera za microelectronics zomwe zimakhala ndi zofunikira zambiri za kutentha ndi chinyezi komanso kusiyana kwakukulu kwa kutentha ndi kutentha kwa chinyezi, komanso mulingo waukhondo ndi wapamwamba. M'nyengo yotentha, mpweya wabwino umakhazikika ndipo umasungunuka mpaka pamalo okhazikika. Nthawi zambiri zimakhala zoyenera kuchiza mpweya wabwino mpaka pa mphambano ya mzere wa isometric enthalpy ndi mzere wa chinyezi wa 95% wa chipinda choyera ndi kutentha koyimilira ndi chinyezi kapena chipinda choyera chokhala ndi mpweya wabwino kwambiri. Kuchuluka kwa mpweya wa MAU kumatsimikiziridwa molingana ndi zosowa za chipinda chilichonse choyera kuti chiwonjezere mpweya, ndikugawidwa kwa AHU m'chipinda chilichonse choyera ndi mapaipi malinga ndi mpweya wabwino wa mpweya wofunikira, ndipo umasakanizidwa ndi mpweya wina wobwerera m'nyumba kuti ukhale kutentha. ndi chithandizo cha chinyezi. Chigawochi chimanyamula kutentha ndi chinyezi chonse ndi gawo la rheumatism yatsopano ya chipinda choyera chomwe chimatumikira. Mpweya wopangidwa ndi AHU aliyense umatumizidwa ku mpweya wokwanira m'chipinda chilichonse choyera, ndipo pambuyo pa kusakanikirana kwachiwiri ndi mpweya wobwerera m'nyumba, umatumizidwa m'chipindamo ndi FFU unit.

Ubwino waukulu wa njira yothetsera MAU + AHU + FFU ndikuti kuwonjezera pa kuonetsetsa kuti ukhondo ndi kupanikizika kwabwino, zimatsimikiziranso kutentha kosiyana ndi chinyezi chofunikira kuti pakhale ndondomeko yoyera ya chipinda chilichonse. Komabe, nthawi zambiri chifukwa cha kuchuluka kwa AHU kukhazikitsidwa, kukhala m'chipindacho ndi chachikulu, chipinda choyera mpweya wabwino, mpweya wobwerera, mapaipi operekera mpweya, amakhala ndi malo akulu, mawonekedwewo amakhala ovuta, kukonza ndi kuyang'anira kumakhala kovuta kwambiri. ndi zovuta, kotero, palibe zofunikira zapadera momwe zingathere kuti tipewe kugwiritsa ntchito.