AIRHEAD: Unogona kutaura nechivimbo kuti nzira yekugadzira duct inoshanda kana kuyerwa kwemhepo kuyerera kuri ± 10% yekuyerera kwemhepo yakaverengerwa.
Mhepo ducts chimwe chezvikamu zvakakosha zveventilation uye air conditioning system. Yepamusoro Performance HVAC Systems inoratidza kuti gumi zvinhu zvinoshanda pamwe chete kuona kushanda kwe duct. Kana chimwe chezvinhu izvi chikaregeredzwa, iyo yese HVAC sisitimu inogona kusapa kunyaradza uye kugona kwaunotarisira kune vatengi vako. Ngatitarisei kuti zvinhu izvi zvinosarudza sei mashandiro eiyo duct system uye maitiro ekuita chokwadi kuti akarurama.
Mafeni emukati (vanofuridza) ndipo panotangira hunhu hwemadhiraivha emhepo. Iyo inosarudza huwandu hwemhepo inogona kupedzisira yatenderera kuburikidza ne duct. Kana iyo duct size iri diki kana kuisirwa zvisizvo, fan haigone kupa iyo inodiwa kuyerera kwemhepo kune system.
Kuti uve nechokwadi chekuti mafeni akasimba zvakakwana kuti afambise inodiwa system airflow, iwe unofanirwa kutarisa kune mudziyo fan fan chati. Ruzivo urwu runogona kuwanikwa mumirayiridzo yekuisa yemugadziri kana data rehunyanzvi. Revera kwazviri kuti uve nechokwadi chekuti fani inogona kukunda kuramba kuyerera kwemhepo kana kudonha kudonha pamakoiri, mafirita uye maducts. Iwe uchashamiswa nezvaunogona kudzidza kubva kune ruzivo rwechigadzirwa.
Iyo yemukati coil uye mhepo sefa ndizvo zvikamu zviviri zvikuru zvesisitimu iyo feni inofanirwa kupfuura nemhepo. Kupikisa kwavo kumhepo inoyerera kunokanganisa zvakananga kushanda kwe duct. Kana ivo vakanyanya kudzora, vanogona kudzikisa zvakanyanya kuyerera kwemhepo isati yasiya iyo ventilation unit.
Iwe unogona kuderedza mukana wekuchekesa makoiri nemasefa nekuita basa zvishoma zvisati zvaitika. Tarisa kune ruzivo rwemugadziri wemakoiri uye sarudza coil yemukati inozopa mhepo inodiwa ine yakaderera kudonha kwepressure kana yanyorova. Sarudza sefa yemhepo inosangana nevatengi vako hutano uye hutsanana zvinodiwa uku uchichengetedza yakaderera kudonha uye kuyerera.
Kuti ikubatsire saizi yako nemazvo, ndinoda kupa zano kuNational Comfort Institute (NCI) "Sefa Sizing Chirongwa". Kana iwe uchida kopi yePDF ndapota nditumire email chikumbiro.
Yakakodzera pombi dhizaini ndiyo hwaro hwekuisa pombi. Izvi ndizvo zvichange zvakaita duct yakaiswa kana zvidimbu zvese zvikabatana sezvaitarisirwa. Kana iyo dhizaini isiriyo kubva pakutanga, kuita kweiyo ductwork (uye iyo yese HVAC system) inogona kutambura nekuda kwekutadza kufambiswa kwemhepo.
Nyanzvi dzakawanda muindasitiri yedu dzinofungidzira kuti dhizaini yakakodzera yedhizaini inongoenderana nekuita kweiyo duct system, asi izvi handizvo. Kuti uve nechokwadi chekuti dhizaini yako yekugadzira nzira inoshanda, zvisinei kuti chii, iwe unofanirwa kuyera iwo chaiwo mafambiro emhepo yeako kuvaka system. Kana iyo yakayerwa kuyerera kwemhepo iri ± 10% yeakaverengerwa mhepo, unogona kutaura nechivimbo kuti nzira yako yekuverenga duct inoshanda.
Imwe fungidziro ine chekuita nekugadzirwa kwepombi fittings. Yakawandisa nyonganyonga nekuda kweiyo isina kugadzirwa duct fittings inoderedza kushanda kwemhepo uye inowedzera kupokana iyo fan inofanirwa kukunda.
Air duct fittings inofanirwa kupa kubviswa zvishoma nezvishoma uye kwakatsetseka kwekuyerera kwemhepo. Dzivisa kupinza uye kudzikisira kutendeuka mukumisikidza pombi kuti uvandudze mashandiro avo. Pfupiso pfupi yeACCA Handbook D ichakubatsira kuti usarudze kuti ndeipi yekumisikidza ichashanda zvakanyanya. Zvishongedzo zvine hurefu hwakaenzana hwakapfupika zvinopa mhepo inoshanda zvakanyanya.
Dense duct system ichaita kuti mhepo irambe ichitenderedzwa nefeni mukati memikoto. Leaky piping inogona kukanganisa mashandiro ehurongwa uye kukonzera matambudziko akasiyana, kusanganisira IAQ uye CO kuchengetedza nyaya, uye kuderedzwa kwemaitiro ehurongwa.
Kuti zvive nyore, chero mechaniki yekubatanidza mupombi system inofanirwa kuvharwa. Putty inoshanda nemazvo kana pasina chikonzero chekukanganisa chinongedzo, senge pombi kana pombi yekubatanidza. Kana pane chikamu kuseri kwema mechanical joint chingada kugadziriswa mune ramangwana, senge coil yemukati, shandisa chisimbiso chinobviswa nyore nyore. Usanamatira basa pane mapaneru emidziyo yekufema.
Kana mhepo yave mune duct, iwe unoda nzira yekuidzora. Volumetric dampers inobvumidza iwe kudzora nzira yekuyerera kwemhepo uye yakakosha kune yakanaka system kuita. Masisitimu asina madhamureta mazhinji anobvumira mweya kutevera nzira yekushomeka kushoma.
Nehurombo, vagadziri vazhinji vanoona izvi zvishongedzo zvisina kufanira uye vanozvibvisa kubva kune akawanda ekuisa pombi. Nzira chaiyo yekuita izvi ndeyekuiisa mumatavi ekugovera uye kudzorera kuitira kuti iwe ugone kuenzanisa kuyerera kwemhepo mukati uye kunze kwekamuri kana nzvimbo.
Kusvika pari zvino, isu takangotarisa pamhepo. Tembiricha ndeimwe piping system performance factor iyo isingafanirwe kufuratirwa. Mishonga yemhepo isina kuvhara haigoni kupa huwandu hunodiwa hwekupisa kana kutonhora mumakamuri ane air-conditioned.
Duct insulation inochengetedza tembiricha yemhepo mukati me duct nenzira yekuti tembiricha yekubuda kweiyo unit iri padhuze neiyo iyo mutengi achanzwa pakubuda.
Insulation yakaiswa zvisizvo kana ine yakaderera R kukosha haizodzivisi kurasikirwa kwekupisa mupombi. Kana musiyano wetembiricha uri pakati petembiricha yekubuda kweyuniti uye tembiricha yemhepo yakanyanyisa kupfuura 3 ° F, kuwedzera kwepombi kunogona kudiwa.
Marejista ekudya uye magrill ekudzoka chikamu chinowanzo furatirwa chekushanda kwepombi system. Kazhinji vagadziri vanoshandisa zvakachipa marejista uye grilles. Vanhu vazhinji vanofunga kuti chinangwa chavo chete ndechekuvhara kuvhurika kwakakasharara mukugovera uye mitsara yekudzoka, asi ivo vanoita zvakawanda.
Regista yekugovera inodzora kupihwa uye kusanganiswa kwemhepo ine conditioned mukamuri. Mhepo inodzoka grilles haikanganisi kubuda kwemhepo, asi inokosha maererano nemheremhere. Ita shuwa kuti havaimbe kana kuimba kana mafeni achimhanya. Tarisa kune ruzivo rwemugadziri wegrate uye sarudza rejista inonyatsoenderana nemhepo uye kamuri yaunoda kudzora.
Musiyano mukuru pakuona mashandiro epombi system ndeyekuti pombi inoiswa sei. Kunyangwe iyo yakanaka system inogona kutadza kana yakaiswa zvisizvo.
Kutarisa kune zvakadzama uye kuronga kudiki kunoenda kure kure kuti uwane iyo chaiyo yekuisa maitiro. Vanhu vachashamiswa pavanoona kuti yakawanda sei mhepo inoyerera inogona kuwanikwa kubva kune inoshanduka ducting nekungobvisa yakawandisa core uye kinks uye kuwedzera hanger. Iyo reflex reaction ndeyekuti chigadzirwa chine mhosva, kwete iyo yekuisa iri kushandiswa. Izvi zvinotisvitsa pachinhu chegumi.
Kuti uve nechokwadi chekubudirira kwekugadzira uye kuisirwa kwepombi system, inofanirwa kusimbiswa. Izvi zvinoitwa nekuenzanisa dhizaini data nedata yakayerwa mushure mekunge system yaiswa. Yega yega kamuri yekuyerera kwemhepo kuyerwa mumakamuri ane conditioned uye tembiricha shanduko muma ducts ndiwo maviri makuru zviyero zvinoda kuunganidzwa. Vashandise kuona huwandu hweBTU hwakaunzwa kuchivakwa uye kuona kuti magadzirirwo akaitwa akasangana here.
Izvi zvinogona kudzoka kwauri kana iwe uchivimba nedhizaini yako maitiro, uchifunga kuti sisitimu inozvibata sezvaitarisirwa. Kurasikirwa nekupisa / kuwana, kusarudzwa kwemidziyo uye kuverengera kwepombi dhizaini hakuna kumboitirwa kuvimbisa kuita - kwete kunze kwemamiriro ezvinhu. Pane kudaro, zvishandise sezvinangwa zvezviyero zvemunda zvemasisitimu akaiswa.
Pasina kugadzirisa, kuita kwepombi yako system kuchadzikira nekufamba kwenguva. Funga kuti kukuvadzwa kwemhepo ducts kubva kumasofa kana waya dzevarume dzakatsamira pamadziro emadziro kunovhiringidza kuyerera kwemhepo - unozviona sei?
Tanga kuyera uye kurekodha yako static kudzvanywa kwese kufona. Mushure mekuona kuti iyo pombi yemvura iri kushanda nemazvo, danho iri rekudzokorora rinokutendera kuti utarise chero shanduko. Izvi zvinokutendera kuti ugare wakabatana kune ductwork uye zvinokupa iwe kunzwisiswa kuri nani kwenyaya dziri kudzikisira kuita kweiyo ducting system yako.
Aya maonero epamusoro-soro ekuti izvi zvinhu gumi zvinoshanda sei pamwe chete kuti zvione kushanda kweiyo duct system inoitirwa kuti iwe ufunge.
Zvibvunze nekutendeseka: ndezvipi zvezvinhu izvi zvauri kutarisisa, uye ndezvipi zvaunofanira kuteerera?
Shanda pazvinhu izvi zvepombi imwe panguva uye iwe zvishoma nezvishoma unozova mutengesi mupfupi. Vasanganise mune yako setup uye iwe unowana mibairo iyo pasina mumwe munhu angafananidza.
Unoda kuziva dzimwe nhau uye ruzivo nezve HVAC indasitiri? Joinha nhau nhasi paFacebook, Twitter uye LinkedIn!
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-20-2023