Ukufakwa: Isifaki silingana nokusebenza kabi kokugeleza komoya kwamapayipi aguquguqukayo. Ukufakwa okuhle kakhulu kufana nokusebenza okuhle kokugeleza komoya okuvela kumapayipi aguquguqukayo. Unquma ukuthi umkhiqizo wakho uzosebenza kanjani. (ngemvume kaDavid Richardson)
Abaningi embonini yethu bakholelwa ukuthi impahla yepayipi elisetshenziswa ekufakeni inquma ikhono lesistimu ye-HVAC lokunyakazisa umoya. Ngenxa yalesi simo sengqondo, i-flexible ducting ngokuvamile ithola i-rap embi. Inkinga akulona uhlobo lwezinto ezibonakalayo. Kunalokho, sifaka umkhiqizo.
Uma uhlola amasistimu angasebenzi kahle asebenzisa amapayipi aguquguqukayo, uzohlangabezana nezinkinga zokufaka eziphindelelayo ezinciphisa ukugeleza komoya futhi zinciphise ukunethezeka nokusebenza kahle. Nokho, ngokunaka imininingwane, ungakwazi ukulungisa kalula futhi uvimbele amaphutha avamile. Ake sibheke amathiphu amahlanu angakusiza ukuthi ufake kangcono i-flexible ducting ukuze ugcine isistimu yakho isebenza kahle.
Ukuze uthuthukise ikhwalithi yokufaka, gwema ukuphenduka okubukhali kwepayipi eligobile ngazo zonke izindleko. Uhlelo lusebenza kahle kakhulu uma ubeka amapayipi aqonde ngangokunokwenzeka. Ngezithiyo eziningi ezindlini zesimanje, lokhu akuyona inketho ngaso sonke isikhathi.
Uma ipayipi kufanele lishintshane, zama ukuligcina lincane. Amajika amade, abanzi asebenza kangcono futhi avumela umoya ukuthi udlule kalula. I-Sharp 90° igoba ishubhu eguquguqukayo ngaphakathi futhi inciphise ukugeleza komoya okunikeziwe. Njengoba ukuphenduka okucijile kuvimbela ukugeleza komoya, ingcindezi emile ohlelweni iyakhula.
Ezinye izindawo ezivamile lapho le mikhawulo zenzeka khona kulapho amapayipi exhunywe ngokungafanele ekuthatheni kanye namabhuzu. Amalunga avamise ukuba nokuphenduka okuqinile okuphazamisa ukuhamba komoya. Lungisa lokhu ngokunikeza ipayipi ukusekela okwanele ukushintsha isiqondiso noma ngokusebenzisa izindololwane zensimbi yeshidi.
Uhlaka lwesakhiwo kungenye inkinga evamile ozoyithola kuma-attics amaningi. Ukuze ulungise lokhu, kungase kudingeke ukuthi uphinde uthumele ipayipi noma uthole enye indawo ukuze ugweme ukujika okubukhali.
Esinye isizathu esivamile sokungenwa kahle komoya kanye nezikhalazo zokunethezeka ukuwohloka ngenxa yokungasekelwa kwamapayipi okwanele. Abafaki abaningi balengisa amapayipi kuphela njalo ngamamitha angu-5-6, okungabangela ukuwohloka okuningi epayipini. Lesi simo siba sibi ngaphezu kokuphila komgudu futhi siyaqhubeka nokunciphisa ukugeleza komoya. Ngokufanelekile, ipayipi eliguquguqukayo akufanele licwile ngaphezu kweyintshi elingu-1 ubude obungamafidi angu-4.
Ukugoba namapayipi acwila kudinga ukwesekwa okwengeziwe. Uma usebenzisa into elengayo emincane njenge-adhesive tape noma ucingo, ipayipi lingase livaleke kuleli phuzu. Ezimweni ezimbi kakhulu, izintambo zingasikwa zibe imigudu, okubangela ukuba umoya uvuze ezindaweni ezingenamibandela zesakhiwo.
Uma lokhu kungapheleli kukhona, umoya uyavinjelwa futhi wehliswe isivinini. Ukuze uqede lezi zinkinga, faka izisekelo ngezikhathi ezivamile, njengazo zonke izinyawo ezi-3 esikhundleni samafidi angu-5, 6, noma angu-7.
Njengoba ufaka izisekelo eziningi, khetha impahla yakho yokubopha ngokuhlakanipha ukuze uvimbele ukuzibamba ungahlosile. Sebenzisa okungenani ama-clamps ama-intshi angu-3 noma izinsimbi zensimbi ukusekela ipayipi. Izihlalo zamapayipi ziwumkhiqizo wekhwalithi ongasetshenziswa futhi ukusekela ngokuvikelekile amapayipi aguquguqukayo.
Esinye isici esivamile esidala ukungahambi kahle komoya kwenzeka lapho umgogodla oguquguqukayo wepayipi ukhishwa lapho unamathiselwe ebhuthini noma lapho ukhishwa. Lokhu kungenzeka uma ungaweluli umgogodla bese uwusika ube ngobude. Uma ungakwenzi lokhu, inkinga yokunamathela izobhebhetheka ngokucindezela umgogodla ngokushesha nje lapho udonsa okokufaka phezu kwebhuthi noma ikhola.
Uma silungisa i-ductwork, ngokuvamile sisusa kufika ku-3 wamafidi we-core eyengeziwe okungenzeka iphuthelwe ekuhlolweni okubonakalayo. Ngenxa yalokho, silinganise ukugeleza komoya okukhuphuka okungu-30 kuya ku-40 cfm uma kuqhathaniswa nomgudu ongu-6″.
Ngakho qiniseka ukuthi udonsa ipayipi ngokuqinile ngangokunokwenzeka. Ngemva kokunamathisela ipayipi ebhuthini noma ukuyikhipha, qinisa futhi ukusuka komunye umkhawulo ukuze ususe umgogodla oweqile. Qeda ukuxhumeka ngokuxhuma ngakolunye uhlangothi bese uqedela ukufaka.
Amakamelo e-plenum akude amabhokisi angama-rectangular noma onxantathu abenziwe nge-ductwork ekufakweni kwe-attic eningizimu. Baxhuma ipayipi elikhulu eliguquguqukayo ekamelweni, eliphakela amapayipi amaningana amancane aphuma ekamelweni. Umqondo ubukeka uthembisa, kodwa banezinkinga okufanele uzazi.
Lokhu kufakwa kunokwehla kwengcindezi ephezulu kanye nokuntuleka kwendlela yokugeleza komoya njengoba ukugeleza komoya kuzama ukushiya okokufanayo. Umoya ulahlekile ku-plenum. Lokhu kubangelwa ikakhulukazi ukulahlekelwa umfutho ekufakeni lapho umoya ohlinzekwa usuka epayipini uya endaweni unwebela endaweni enkulu. Noma yisiphi isivinini somoya sizokwehla lapho.
Ngakho iseluleko sami ukugwema lezi zesekeli. Kunalokho, cabanga ngesistimu yokuthuthukisa enwetshiwe, i-long jump, noma inkanyezi. Izindleko zokufaka lezi zilinganisi zizoba phezulu kancane kunokufaka i-plenum ekude, kodwa ukuthuthukiswa kokusebenza kokugeleza komoya kuzobonakala ngokushesha.
Uma usayizi wepayipi ngokwemithetho yesithupha yakudala, ungenza into efanayo nangaphambili futhi uhlelo lwakho lwamapayipi lusazosebenza kabi. Uma usebenzisa izindlela ezifanayo ezisebenzela amapayipi ensimbi eshidi ukuze abe usayizi wamapayipi aguquguqukayo, kuphumela ekuphumeni komoya okuphansi kanye nokucindezela okuphezulu okumile.
Lezi zinto zamapayipi zinezakhiwo ezimbili ezihlukene zangaphakathi. Ishidi lensimbi linendawo ebushelelezi, kuyilapho insimbi eguquguqukayo inomgogodla ongalingani. Lo mehluko uvamise ukuphumela emazingeni ahlukene okugeleza komoya phakathi kwemikhiqizo emibili.
Okuwukuphela komuntu engimaziyo ongenza i-ducting eguquguqukayo njengeshidi lensimbi ngu-Neil Comparetto we-The Comfort Squad eVirginia. Usebenzisa ezinye izindlela zokufaka ezintsha ezivumela inkampani yakhe ukuthi ifinyelele ukusebenza kwepayipi okufanayo kuzo zombili izinto.
Uma ungakwazi ukukhiqiza kabusha isifaki sika-Neal, isistimu yakho izosebenza kangcono uma uklama ipayipi eliguquguqukayo elikhudlwana. Abantu abaningi bathanda ukusebenzisa i-friction factor engu-0.10 kuzibali zamapayipi abo futhi bacabange ukuthi amayintshi angu-6 epayipi azohlinzeka ngokugeleza kwe-100 cfm. Uma lokhu kuyizinto ozilindele, umphumela uzokudumaza.
Nokho, uma kufanele usebenzise I-Metal Pipe Calculator kanye namanani azenzakalelayo, khetha usayizi wepayipi one-coefficient yokungqubuzana engu-0.05 bese ulandela imiyalelo yokufaka ngenhla. Lokhu kukunikeza ithuba elingcono lokuphumelela kanye nesistimu eseduze nephuzu.
Ungaphikisana usuku lonke mayelana nezindlela zokuklama ipayipi, kodwa uze uthathe izilinganiso futhi uqiniseke ukuthi ukufakwa kuletha ukugeleza komoya okudingayo, konke kuwukuqagela. Uma uzibuza ukuthi uNeil wayazi kanjani ukuthi angathola izici zensimbi zamashubhu ahlanganisiwe, yingoba walinganisa.
Inani lokugeleza komoya elilinganisiwe elisuka kudome yokulinganisa yilapho irabha ihlangana khona nomgwaqo wanoma yikuphi ukufakwa kwemigudu eguquguqukayo. Usebenzisa amathiphu angenhla, ungabonisa isifaki sakho ukugeleza komoya okukhulayo okulethwa yilezi ntuthuko. Basize babone ukuthi ukunaka kwabo imininingwane kubaluleke kangakanani.
Yabelana ngalawa macebiso nesifaki sakho futhi uthole isibindi sokufaka kahle isistimu yakho yokufaka amapayipi. Nikeza abasebenzi bakho ithuba lokwenza umsebenzi wenziwe kahle okokuqala. Amakhasimende akho azokujabulela futhi ngeke ube mancane amathuba okuthi ubuye.
U-David Richardson unguMthuthukisi Wekharikhulamu kanye Nomfundisi Wezimboni we-HVAC ku-National Comfort Institute, Inc. (NCI). I-NCI igxile ekuqeqesheni ukuthuthukisa, ukukala kanye nokuqinisekisa ukusebenza kwe-HVAC nezakhiwo.
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.
Okuqukethwe Okuxhasiwe kuyisigaba esikhokhelwayo esikhethekile lapho izinkampani zemboni zihlinzeka ngokuqukethwe kwekhwalithi ephezulu, okungachemile, okunganamali okuthengisiwe ngezihloko ezithakaselwayo ezithamelini zezindaba ze-ACHR. Konke okuqukethwe okuxhasiwe kunikezwa izinkampani zokukhangisa. Unentshisekelo yokubamba iqhaza esigabeni sethu sokuqukethwe esixhasiwe? Xhumana nommeleli wendawo yakho.
Ngokufunwa Nguwe Kule webinar, sizofunda ngezibuyekezo zakamuva zesiqandisi semvelo se-R-290 nokuthi sizoba nomthelela kanjani embonini ye-HVACR.
Isikhathi sokuthumela: Apr-19-2023