Kuyika: Woyikayo amafanana ndi kusayenda bwino kwa mpweya kwa ma ducts osinthika. Kuyika kwakukulu kumafanana ndi kayendedwe ka mpweya wabwino kuchokera ku ma ducts osinthika. Mumasankha momwe mankhwala anu adzagwirira ntchito. (mwachilolezo cha David Richardson)
Ambiri m'makampani athu amakhulupirira kuti zida zomwe zimagwiritsidwa ntchito poyikapo zimatsimikizira kuthekera kwa makina a HVAC kusuntha mpweya. Chifukwa cha malingaliro awa, ma ducting osinthika nthawi zambiri amakhala ndi rap yoyipa. Vuto si mtundu wa zinthu. M'malo mwake, timayika malonda.
Mukayesa makina osagwira ntchito omwe amagwiritsa ntchito ma ducting osinthika, mumakumana ndi zovuta zokhazikika zomwe zimachepetsa kuyenda kwa mpweya ndikuchepetsa chitonthozo komanso kuchita bwino. Komabe, mwa kutchera khutu mwatsatanetsatane, mutha kukonza mosavuta ndikuletsa zolakwika zomwe zimachitika nthawi zambiri. Tiyeni tiwone malangizo asanu okuthandizani kukhazikitsa flexible ducting kuti makina anu azigwira ntchito bwino.
Kuti muwongolere bwino pakuyikako, pewani kutembenuka kwakuthwa kwa chitoliro chopindika chilichonse. Dongosolo limagwira ntchito bwino mukayika mapaipi mowongoka momwe mungathere. Ndi zopinga zambiri m'nyumba zamakono, izi sizosankha nthawi zonse.
Pamene chitoliro chiyenera kusinthana, yesetsani kuzichepetsa. Makhotolo aatali, otambasuka amagwira bwino ntchito ndipo amalola mpweya kudutsa mosavuta. Kuthwa kwa 90 ° kumapinda chubu chosinthika mkati ndikuchepetsa mpweya woperekedwa. Pamene kutembenuka kwakuthwa kumalepheretsa kutuluka kwa mpweya, kupanikizika kwa static m'dongosolo kumawonjezeka.
Malo ena odziwika kumene ziletsozi zimachitika ndi pamene mipope imalumikizidwa molakwika ndi ma take off ndi nsapato. Zolumikizana nthawi zambiri zimakhala zopindika zolimba zomwe zimasokoneza kayendedwe ka mpweya. Konzani izi popereka njira yokwanira yosinthira kolowera kapena kugwiritsa ntchito zigongono zachitsulo.
Kupanga mapangidwe ndi vuto lina lomwe mumapeza m'manyumba ambiri. Kuti mukonze izi, mungafunikire kuwongolera chitolirocho kapena kupeza malo ena kuti mupewe kukhota lakuthwa.
Chinanso chomwe chimapangitsa kuti mpweya wabwino ukhale wochepa komanso madandaulo otonthoza ndikutsika chifukwa cha kusakwanira kwa mapaipi. Okhazikitsa ambiri amapachika mapaipi okha 5-6 mapazi aliwonse, zomwe zingayambitse kugwa kwambiri mu chitoliro. Matendawa amaipiraipira pa moyo wa njirayo ndipo akupitiriza kuchepetsa mpweya. Momwemo, chitoliro chosinthika sichiyenera kupitirira inchi imodzi pa utali wa mapazi anai.
Kupindika ndi mapaipi akugwa amafunikira chithandizo chowonjezera. Mukamagwiritsa ntchito zinthu zopapatiza monga zomatira kapena waya, njirayo imatha kutsekedwa panthawiyi. Zikavuta kwambiri, mawaya amatha kudula ma ducts, zomwe zimapangitsa kuti mpweya ulowe m'malo osakhazikika a nyumbayo.
Kupanda ungwiro kumeneku kukakhalapo, mpweya umatsekeka ndipo umachepa. Kuti muthetse vutoli, ikani zothandizira pafupipafupi, monga mapazi atatu aliwonse m'malo mwa 5, 6, kapena 7.
Mukayika zothandizira zambiri, sankhani zomangira zanu mwanzeru kuti mupewe kudziletsa mwangozi. Gwiritsani ntchito ziboliboli zosachepera 3-inch kapena zitsulo zothandizira chitoliro. Zovala zapaipi ndi chinthu chabwino chomwe chitha kugwiritsidwanso ntchito pothandizira mapaipi osinthika.
Vuto linanso lomwe limayambitsa kusayenda bwino kwa mpweya kumachitika pamene chigawo chosinthika cha duct chimagwedezeka chikamangidwa pa boot kapena chikachotsedwa. Izi zitha kuchitika ngati simutambasula pachimake ndikudula mpaka kutalika. Ngati simuchita izi, vuto lomamatira lidzakulitsidwa ndi kukanikiza pachimake mutangokoka chotsekera pa boot kapena kolala.
Pokonza ma ductwork, nthawi zambiri timachotsa mpaka 3 mapazi owonjezera omwe angaphonye poyang'anitsitsa. Zotsatira zake, tinayeza kuchuluka kwa mpweya wa 30 mpaka 40 cfm poyerekeza ndi 6 ″ duct.
Choncho onetsetsani kukoka chitoliro molimba momwe mungathere. Mukayika chitoliro ku boot kapena kuchichotsa, limbitsaninso kuchokera kumbali ina kuti muchotse pachimake chowonjezera. Malizitsani kulumikizako polumikiza kumapeto kwina ndikumaliza kuyika.
Zipinda zakutali za plenum ndi mabokosi amakona anayi kapena makona atatu opangidwa kuchokera ku ma ductwork kumwera chakumwera kwa chapamwamba. Analumikiza chitoliro chachikulu chosinthasintha kuchipindacho, chomwe chimadyetsa mapaipi ang'onoang'ono angapo omwe amatuluka m'chipindacho. Lingaliro likuwoneka lolimbikitsa, koma ali ndi zovuta zomwe muyenera kuzidziwa.
Zopangira izi zimakhala ndi kutsika kwamphamvu komanso kusowa kwa kayendedwe ka mpweya pamene mpweya umayesa kusiya zoyenera. Mpweya umatayika mu plenum. Izi zimachitika makamaka chifukwa cha kutayika kwa mphamvu mu kuyenerera pamene mpweya woperekedwa kuchokera ku chitoliro kupita kumalo oyenerera umakula kukhala malo okulirapo. Liwiro lililonse la mpweya lidzatsikira pamenepo.
Choncho malangizo anga ndi kupewa zipangizo zimenezi. M'malo mwake, ganizirani njira yowonjezera yowonjezera, kulumpha kwautali, kapena nyenyezi. Mtengo woyika zofananirazi udzakhala wokwera pang'ono kuposa kukhazikitsa plenum yakutali, koma kusintha kwa kayendedwe ka mpweya kudzawoneka nthawi yomweyo.
Ngati mumakula molingana ndi malamulo akale a chala chachikulu, mutha kuchita zomwezo monga kale ndipo makina anu amayendabe bwino. Mukamagwiritsa ntchito njira zomwezo zomwe zimagwira ntchito poyimba zitsulo mpaka kukula kwa mapaipi osinthika, zimapangitsa kuti mpweya ukhale wotsika komanso kuthamanga kwambiri.
Zida zamapaipizi zili ndi zida ziwiri zosiyana zamkati. Chitsulo chachitsulo chimakhala chosalala, pomwe chitsulo chosinthika chimakhala ndi phata lozungulira. Kusiyana kumeneku nthawi zambiri kumapangitsa kuti pakhale mpweya wosiyanasiyana pakati pa zinthu ziwirizi.
Munthu yekhayo amene ndimamudziwa yemwe amatha kupanga ma ducting osinthika ngati chitsulo chachitsulo ndi Neil Comparetto wa The Comfort Squad ku Virginia. Amagwiritsa ntchito njira zopangira zatsopano zomwe zimalola kampani yake kukwaniritsa chitoliro chomwecho kuchokera ku zipangizo zonse ziwiri.
Ngati simungathe kupanganso choyikira cha Neal, makina anu azigwira ntchito bwino ngati mupanga chitoliro chokulirapo. Anthu ambiri amakonda kugwiritsa ntchito friction factor ya 0.10 muzowerengera zawo zamapaipi ndikuganiza kuti mainchesi 6 a chitoliro apereka kuyenda kwa 100 cfm. Ngati izi ndizomwe mukuyembekezera, ndiye kuti zotsatira zake zidzakukhumudwitsani.
Komabe, ngati mukuyenera kugwiritsa ntchito Calculator ya Chitsulo chachitsulo ndi misinkhu yokhazikika, sankhani kukula kwa chitoliro chokhala ndi friction coefficient ya 0.05 ndikutsatira malangizo oyika pamwambapa. Izi zimakupatsani mwayi wopambana komanso dongosolo lomwe lili pafupi ndi mfundoyo.
Mutha kutsutsana tsiku lonse za njira zopangira ma ducts, koma mpaka mutayezera ndikuwonetsetsa kuti kuyikako kumapereka mpweya womwe mukufuna, zonsezi ndi zongopeka. Ngati mukudabwa momwe Neil adadziwira kuti atha kupeza zitsulo zamachubu opindika, ndichifukwa adaziyeza.
Mtengo wa mpweya woyezedwa kuchokera pa balancing dome ndi pamene mphira umakumana ndi msewu poyika njira iliyonse yosinthika. Pogwiritsa ntchito malangizo omwe ali pamwambapa, mutha kuwonetsa choyika chanu kuchuluka kwa mpweya womwe izi zimabweretsa. Athandizeni kuona momwe chidwi chawo pa tsatanetsatane chimafunikira.
Gawani malangizo awa ndi oyika anu ndikupeza kulimba mtima kuti muyike bwino makina anu opangira madzi. Perekani antchito anu mwayi woti agwire ntchitoyo nthawi yoyamba. Makasitomala anu adzayamikira ndipo simudzakhalanso mwayi wobwereranso.
David Richardson ndi Woyambitsa Maphunziro ndi Mlangizi wa Makampani a HVAC ku National Comfort Institute, Inc. (NCI). NCI imagwira ntchito yophunzitsa kukonza, kuyeza ndi kutsimikizira momwe HVAC ndi nyumba zikuyendera.
If you are an HVAC contractor or technician and would like to learn more about high precision pressure measurement, please contact Richardson at davidr@ncihvac.com. The NCI website, www.nationalcomfortinstitute.com, offers many free technical articles and downloads to help you grow professionally and strengthen your company.
Zoperekedwa Zoperekedwa ndi gawo lapadera lolipidwa pomwe makampani opanga makampani amapereka zinthu zapamwamba kwambiri, zopanda tsankho, zosachita malonda pamitu yomwe imakonda kumvetsera nkhani za ACHR. Zonse zomwe zimathandizidwa zimaperekedwa ndi makampani otsatsa. Kodi mukufuna kutenga nawo mbali pagawo lathu lothandizira? Lumikizanani ndi woimira kwanuko.
Pa Demand Mu webinar iyi, tiphunzira zaposachedwa kwambiri mufiriji yachilengedwe ya R-290 ndi momwe ingakhudzire makampani a HVACR.
Nthawi yotumiza: Apr-19-2023