Kuiswa: Inoisa yakaenzana nekushaya kuyerera kwemhepo kuita kweanochinjika ducts.Kuiswa kukuru kwakaenzana nekuita kukuru kwemhepo kubva kune anochinjika ducts.Iwe unosarudza kuti chigadzirwa chako chichashanda sei.( nerubatsiro rwaDavid Richardson)
Vazhinji muindasitiri yedu vanotenda kuti iyo duct zvinhu inoshandiswa mukumisikidza inosarudza kugona kweHVAC system kufambisa mweya.Nekuda kwemafungiro aya, flexible ducting kazhinji inowana rap yakaipa.Dambudziko harisi rudzi rwezvinhu.Pane kudaro, tinoisa chigadzirwa.
Paunoyedza masisitimu asingashande anoshandisa flexible ducting, iwe unozosangana nematambudziko ekuisa anodzokororwa anoderedza kuyerera kwemhepo uye kuderedza kunyaradza uye kushanda zvakanaka.Nekudaro, nekuteerera kune zvakadzama, unogona kururamisa nyore uye kudzivirira izvo zvinowanzoitika zvikanganiso.Ngatitarisei matipi mashanu ekukubatsira iwe zvirinani kuisa flexible ducting kuchengetedza system yako ichishanda nemazvo.
Kuti uvandudze kunaka kwekuiswa, dzivisa kutendeuka kwakapinza kwepombi yakabhenda pane zvese zvinodhura.Iyo sisitimu inoshanda zvakanyanya kana iwe ukaisa mapaipi zvakananga sezvinobvira.Nezvipingamupinyi zvakawanda mudzimba dzemazuvano, iyi haisi sarudzo nguva dzose.
Apo pombi inofanira kuita majana, edza kuvachengetedza zvishoma.Kutenderera kwakareba, kwakafara kunoshanda zvakanyanya uye kunoita kuti mweya upfuure nemo zviri nyore.Yakapinza 90 ° inokotama chubhu inoshanduka mukati uye inoderedza kuyerera kwemhepo kunopihwa.Sezvo kutendeuka kwakapinza kunodzora kuyerera kwemhepo, iyo static pressure musystem inowedzera.
Dzimwe nzvimbo dzakajairika uko zvirambidzo izvi zvinoitika ndepapo pombi dzemvura dzakabatana zvisina kunaka pakubvisa uye bhutsu.Majoini anowanzoita majana akasimba anovhiringa mafambiro emhepo.Rongedza izvi nekupa dhizaini rutsigiro rwakakwana kuti uchinje nzira kana kushandisa sheet simbi magokora.
Kuumbwa kwemaitiro nderimwe dambudziko rakajairika rauchawana mune akawanda attics.Kuti ugadzirise izvi, ungangoda kudzoreredza pombi kana kutsvaga imwe nzvimbo kudzivirira kukona kwakapinza.
Chimwe chikonzero chinowanzokonzera kushayikwa kwemhepo uye zvichemo zvekunyaradza kuderera nekuda kwekusakwana kwepombi rutsigiro.Vazhinji vanoisa vanorembera mapaipi chete ega ega 5-6 tsoka, izvo zvinogona kukonzera kudonha kwakawanda mupombi.Iyi mamiriro anowedzera pamusoro pehupenyu hwe duct uye inoramba ichideredza mhepo.Sezvineiwo, pombi inochinjika haifanire kureba kupfuura 1 inch pamusoro pehurefu hwemamita mana.
Mabhenji uye pombi dzinodonha zvinoda imwe rutsigiro.Paunoshandisa chinhu chakamanikana chakarembera senge tepi yekunamatira kana waya, iyo duct inogona kuvharika panguva ino.Muzviitiko zvakakomba, waya dzinogona kucheka kuita madhaidhi, zvichiita kuti mweya upinde munzvimbo dzisina kuvharwa dzechivako.
Kana kusakwana uku kuripo, mhepo inovharwa uye inononoka.Kuti ubvise matambudziko aya, isa zvitsigiso nguva zhinji, senge tsoka 3 dzega dzega pachinzvimbo che5, 6, kana 7 tsoka.
Sezvo iwe uchiisa mamwe matsigiro, sarudza yako tambo zvinhu zvine hungwaru kudzivirira kuzvidzora usingaite.Shandisa 3-inch clamps kana simbi simbi kutsigira pombi.Pipe saddles chigadzirwa chemhando yepamusoro chinogona kushandiswawo kuchengetedza zvakachengeteka pombi dzinochinjika.
Chimwe chikanganiso chinowanzoitika chinokonzeresa kuyerera kwemhepo kunoitika kana iyo inochinjika musimboti weiyo duct inogogodzwa kana yakasungirirwa kubhutsu kana kana yabviswa.Izvi zvinogona kuitika kana iwe ukasatambanudza core uye ucheke kusvika kureba.Kana iwe ukasaita izvi, dambudziko rekunamira rinowedzera nekudzvanya musimboti paunongodhonza insulation pamusoro pebhutsu kana collar.
Kana tichigadzirisa ductwork, isu tinowanzo bvisa anosvika 3 tsoka dzekuwedzera core iyo inogona kupotsa pakuona kwekutarisa.Nekuda kweizvozvo, takayera kuwedzera kwemhepo ye30 kusvika 40 cfm zvichienzaniswa ne6 ″ duct.
Saka iva nechokwadi chekudhonza pombi zvakasimba sezvinobvira.Mushure mekubatanidza pombi kubhoti kana kuibvisa, simbisa zvakare kubva kune rumwe rutivi kuti ubvise iyo yakanyanyisa core.Pedzisa kubatana nekubatanidza kune imwe mugumo uye kupedzisa kuiswa.
Iwo ari kure plenum chamber mabhokisi ane rectangular kana makona matatu akagadzirwa kubva paduruvha muzasi kweattic kuisirwa.Vakabatanidza pombi hombe inochinjika kukamuri, iyo inodyisa mapaipi madiki akati wandei anobuda mukamuri.Iyo pfungwa inotaridzika kuvimbisa, asi ivo vane nyaya dzaunofanira kuziva.
Aya mafirita ane yakanyanya kudonhedza kudonha uye kushomeka kwekuyerera kwemhepo sezvo mafambiro emhepo achiedza kusiya yakakodzera.Mhepo inorasika muplenum.Izvi zvinonyanya kukonzerwa nekurasikirwa kwekukurumidza mukukodzera apo mhepo inopihwa kubva papombi kuenda kune yekukodzera inowedzera munzvimbo yakakura.Chero kumhanya kwemhepo kunodonha ipapo.
Saka zano rangu nderekunzvenga zvishongedzo izvi.Pane kudaro, funga yakawedzera kusimudzira sisitimu, kusvetuka kwenguva refu, kana nyeredzi.Mutengo wekuisa aya maequalizer uchakwira zvishoma pane kuisa kure plenum, asi kuvandudzwa kwekuita kwemhepo kunozoonekwa nekukasira.
Kana iwe ukakura duct maererano nemitemo yechinyakare yechigunwe, unogona kuita chinhu chimwe chete sepakutanga uye duct system yako icharamba ichiita zvisina kunaka.Paunoshandisa nzira dzakafanana dzinoshanda papepa resimbi piping kusvika pakukura kuchinjika pombi, zvinokonzeresa kuderera kwemhepo uye yakakwirira static pressure.
Aya mapiping zvinhu ane maviri akasiyana emukati zvimiro.Sheet metal ine nzvimbo yakatsetseka, nepo simbi inochinjika ine isina kuenzana spiral core.Musiyano uyu unowanzo konzera mazinga akasiyana ekufambisa kwemhepo pakati pezvigadzirwa zviviri izvi.
Iye ega munhu wandinoziva anogona kugadzira dhizaini senge sheet simbi ndiNeil Comparetto weThe Comfort squad muVirginia.Anoshandisa dzimwe nzira dzekuisa dzinoita kuti kambani yake iwane kuita kwepombi imwechete kubva kune zvese zviri zviviri.
Kana iwe usingakwanise kuburitsa Neal's installer, yako system inoshanda zvirinani kana ukagadzira hombe flex pombi.Vanhu vazhinji vanofarira kushandisa friction factor ye0.10 mumapombi avo ekuverenga uye vanofungidzira kuti 6 inches yepombi ichapa kuyerera kwe100 cfm.Kana izvi zviri izvo zvaunotarisira, ipapo mhedzisiro ichakuodza mwoyo.
Nekudaro, kana iwe uchifanira kushandisa Metal Pipe Calculator uye iyo default kukosha, sarudza saizi yepombi ine friction coefficient ye0.05 uye tevera mirairo yekuisa iri pamusoro.Izvi zvinokupa iwe mukana uri nani wekubudirira uye hurongwa huri padyo nenzvimbo.
Unogona kupokana zuva rese nezve madhizaini edhizaini, asi kudzamara watora zviyero uye woita shuwa kuti kuisirwa kunoburitsa mhepo yaunoda, zvese ndezvekufungidzira.Kana iwe uchinetseka kuti Neil akaziva sei kuti aigona kuwana simbi yesimbi yakakoswa tubing, imhaka yekuti akaiyera.
Iyo yakayerwa kukosha kwekufambisa kwemhepo kubva kune yakaenzana dome ndipo panosangana nerabha mugwagwa wechero flexible duct installation.Uchishandisa matipi ari pamusoro, unogona kuratidza yako yekuisa iyo yakawedzera kuyerera kwemhepo idzi kuvandudzwa kunounza.Vabatsire kuti vaone kuti kukoshesa kwavo mashoko kunokosha sei.
Goverana matipi aya neako installer uye uwane hushingi hwekuisa zvakanaka pombi yako system.Ipa vashandi vako mukana wekuita kuti basa riitwe zvakanaka nguva yekutanga.Vatengi vako vanozozvikoshesa uye iwe unenge usingachakwanisi kufona zvakare.
David Richardson mugadziri weCurriculum uye HVAC Indasitiri Murairidzi paNational Comfort Institute, Inc. (NCI).NCI inonyanya kudzidzisa kuvandudza, kuyera uye kuona mashandiro eHVAC nezvivakwa.
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.
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Nguva yekutumira: Kubvumbi-19-2023