Mukamva HVAC yokhazikika, anthu ambiri amalumphira molunjika kumagawo ochita bwino kwambiri kapena ma thermostat anzeru. Tepi yosindikiza ma ducts? Lingaliro lomaliza. Koma ndipamene mpweya umatuluka, mphamvu zimathera, ndipo moona mtima, kumene malonjezo obiriwira ambiri amaphwanyidwa. Ndawona ma projekiti ambiri pomwe amatchula makina apamwamba a VRF koma kenako amagwiritsa ntchito tepi yotsika mtengo, yopanda mpweya yomwe imawonongeka zaka ziwiri. Kukhazikika sikungokhudza zinthu zazikulu zamatikiti; ndi za zinthu zomwe zimagwirizanitsa zonse pamodzi-kwenikweni. Ndiye, nchiyani chomwe chimapangitsa tepi ya gasket kukhala yokhazikika pama ductwork, ma plenum, ndi mapanelo olowera? Si yankho losavuta, ndipo msika umadzaza ndi zosankha zomwe zimati ndizobiriwira. Tiyeni tidutse izo.

The Sustainable Label ndi Minefield

Choyamba, muyenera kufotokozera zokhazikika munkhaniyi. Kodi ndi zobwezerezedwanso? Moyo wautali? Kutulutsa mpweya komanso mpweya wabwino wamkati? Kodi kaboni wophatikizidwa mukupanga? Ndizo zonse, koma zofunikira zimasintha. Pakubwezeredwa kuchipatala, kutulutsa kotsika kwa VOC sikungakambirane. Kwa nyumba yosungiramo zinthu, mwina kukhazikika kwanthawi zonse ndi kusunga mtengo wa R ndi mfumu. Kulakwitsa kofala ndikuyika patsogolo gawo limodzi, monga zomwe zasinthidwanso, ndikunyalanyaza magwiridwe antchito a zomatira pakusinthasintha kwa kutentha. Nthawi ina ndidagwiritsa ntchito tepi yokhala ndi mphira wa 70% wogwiritsidwa ntchito ndi ogula. Nkhani yabwino kwa lipoti la kasitomala. Koma padenga la nyumba ku Arizona, zomatirazo zidasanduka supu pofika chaka chachitatu. Chisindikizocho chinalephera, kupanga njira yodutsa yotentha yomwe mwina inalepheretsa kupindula kwa mpweya watsopano. Kodi tikuphunzirapo chiyani? Chogulitsa chokhazikika kwambiri ndi chomwe chimakhala nthawi yayitali ngati dongosolo likusindikiza.

Ndiye pali mbali ya sayansi ya zinthu. Matepi a thovu otsekedwa, nthawi zambiri EPDM kapena polyethylene, ndi okhazikika. Koma si onse amene ali ofanana. Zosakaniza zina zotsika mtengo zimagwiritsa ntchito mapulasitiki omwe amachoka, kupangitsa thovu kukhala lolimba. Mtundu wokhazikika wokhazikika umafunikira maziko okhazikika a polima. Ndakhala ndi zotsatira zabwino ndi matepi ena opangidwa ndi EPDM omwe amapangidwa popanda phthalates ndipo ali ndi kukana kwakukulu kwa UV, ozoni, ndi kutentha kwambiri (-40 ° F mpaka 225 ° F). Amawononga 20-30% yochulukira patsogolo, koma ngati apitilira zaka khumi, kusanthula kwa moyo kumawoneka kosiyana kotheratu.

Sitingathenso kunyalanyaza chothandizira ndi kumasula liner. Ndi pepala kapena pulasitiki? Kodi wopanga ali ndi pulogalamu yobwezeretsanso mipukutu? Ndizochepa, koma pa ntchito yaikulu yamalonda, mumapanga phiri laling'ono la pepala lopangidwa ndi silicone kapena filimu ya pulasitiki. Mitundu ina yaku Europe tsopano ikugwiritsa ntchito ma compostable liners, omwe ndi sitepe yolondola, ngakhale kupezeka ku North America kungakhale kopanda banga.

Kuchita Popanikizika (ndi Kutentha, ndi Kuzizira ...)

Mapepala apadera ndi chinthu chimodzi. Zochitika zenizeni padziko lapansi ndi zina. Tepi yokhazikika ya gasket iyenera kugwira ntchito yake yayikulu bwino: kupanga chisindikizo chokhazikika, chopanda mpweya. Ma metrics ofunikira apa ndi adhesion-in-peel (kulimba kwake kumamatira) ndi kukana kwa ma compression (momwe kumayambira bwino pambuyo poti squished). Tepi yokhala ndi makina oponderezedwa osakwanira idzawonongeka kotheratu, kusiya mpata pambuyo poti ukadaulo wautumiki wachotsa gulu lolowera.

Ndikukumbukira pulojekiti yogona yapakati pomwe tidagwiritsa ntchito tepi yobiriwira ya acrylic. Zinali ndi mphamvu zomatira zopambana poyamba. Komabe, nyumbayi inali ndi chinyezi chambiri pomanga. Tepiyo inayamwa chinyezi kuchokera mumlengalenga musanayambe kusindikizidwa, zomwe pambuyo pake zinapangitsa kuti zomatirazo zilephereke pamalumikizidwe a msoko pamene dongosolo la HVAC la nyumbayo linapanga kupanikizika koipa. Maphokoso a mluzu ndi kutha kwa mphamvu zomwe zinkachititsa kuti aziyimbanso mluzu zinali zoopsa. Tidaphunzira kuyang'ana nthawi zonse kulekerera chinyezi cha tepi ndikuwonetsetsa kuti ikugwiritsidwa ntchito molamulidwa. Tsopano, pa projekiti iliyonse yomwe ingakhale ndi chinyezi pakuyika, ndimatsamira makina omatira a butyl. Sakhala achilengedwe pamapepala koma amapanga mgwirizano wodalirika, wopanda madzi m'malo ovuta.

Chiwerengero chamoto ndi chinanso chosakambitsirana. UL 181A-P kapena B (ya njira yolimba kapena yosinthika) ndiye maziko. Chogulitsa chokhazikika sichimadutsa apa. Matepi ena opangidwa ndi thovu amavutikira kuti akwaniritse izi popanda zowonjezera zoletsa moto, zomwe zimabweretsa mafunso awo achilengedwe ndi thanzi. Ndikuchita kulinganiza kosalekeza.

Supply Chain ndi Zowona Zothandiza

Pano pali mbali yothandiza yomwe nthawi zambiri imanyalanyazidwa: kukhazikika kwa njira yoperekera yokha. Kodi tepiyo yapangidwa kuti? Kodi imafika mpaka pati? Tepi yobiriwira yotumizidwa padziko lonse lapansi m'sitima yapamadzi ikhoza kukhala ndi mpweya wochuluka kuposa chinthu chachigawo chokhala ndi nyenyezi zochepa. Ndayamba kuyang'ana kwambiri opanga omwe ali ndi zopanga zam'deralo kapena omwe amawonekera poyang'ana momwe akugwirira ntchito.

Izi zimandibweretsa kwa wothandizira yemwe ndamuyesa kuti apeze njira zotsekera komanso zosindikizira: Malingaliro a kampani Handan Zitai Fastener Manufacturing Co., Ltd.. Amakhala ku Yongnian, Hebei, malo opangira zida zamagetsi. Ngakhale ndimawadziwa makamaka zomangira zomangira, kuyika kwawo ngati opanga zazikulu m'malo ofunikira (kumanja kwa Beijing-Guangzhou Railway ndi misewu yayikulu) ndikofunikira. Kwa pulojekiti yochuluka kwambiri, kupeza tepi yosindikizira yogwirizana, yolimba kuchokera kwa wopanga ndi mtundu woterewu wophatikizika wazitsulo zophatikizika - ngati apereka - kungachepetse kutulutsa kwathunthu kwa polojekiti kuchokera kumayendedwe. Sizokhudza kusankha mankhwala awo mwachimbulimbuli, koma kumvetsetsa kuti kukhazikika kwenikweni kumaphatikizapo kuyendetsa bwino zinthu. Mukhoza kuyang'ana maziko awo a ntchito pa https://www.zitaifasteners.com. Ndi chikumbutso kuti nthawi zina zabwino kwambiri mankhwala si za zinthu datasheet; ndi za njira yonse yomwe imatengera kumalo ogwirira ntchito.

M'malo mwake, chidziwitso cha okhazikitsa chimakhala chofunikira. Ngati tepiyo ndi yolimba kwambiri - imafuna choyambira bwino, mfuti yeniyeni, kapena misozi mosavuta - imatsogolera ku zinyalala (zidutswa zodulidwa, zigawo zosagwiritsidwa ntchito molakwika) ndi zisindikizo zosauka ngati oyika adula ngodya. Tepi yokhazikika kwambiri padziko lapansi ndiyopanda ntchito ngati idayikidwa bwino. Ndimakonda masikono okhala ndi zolembera zowoneka bwino zapakati komanso kukanikizana kosalekeza. Zikumveka ngati zazing'ono, koma zimachepetsa zowonongeka ndi 5-10% pa ntchito, zomwe zimawonjezera.

Mlandu: Retrofit Imene Inatiphunzitsa

Ndiroleni ine ndifotokoze enieni retrofit kuyambira zaka zingapo mmbuyo. Kumayambiriro kwa zaka za m'ma 2000, kumanga maofesi, kukweza mayunitsi oyendetsera mpweya ndikusindikizanso ma ducts onse. Cholinga chinali mfundo za LEED. Tinasankha tepi ya thovu ya silicone ya premium, yopanda zosungunulira. Inali ndi zofotokozera zabwino: palibe ma VOC, kutentha kwabwino kwambiri, komanso moyo wautumiki wazaka 20. Kuyikako kudayenda bwino.

Patapita zaka ziwiri, tinabwereranso ku gawo lina la ntchito. Tikuyang'ana ntchito yakale, tidapeza kuti tepiyo idachita bwino… kupatula mchipinda chomakina chomwe. Pafupi ndi mapaipi a nthunzi, pomwe nyengo yozungulira nthawi zina imakwera pamwamba pa tepiyo, tepiyo idaumitsidwa pang'ono ndipo idachokapo pang'ono. Sikunali kulephera kowopsa, koma kunali kutayikira. Sitinawerenge mokwanira malo ang'onoang'ono mkati mwa duct run. Kukonzekera kunali kugwiritsa ntchito chosindikizira chapamwamba cha mastic mu malo enieni, otentha kwambiri, ndikusunga tepi kwina kulikonse. Zotengera? Ngakhale ndi chinthu chabwino kwambiri, muyenera kuwunika momwe magwiridwe antchito a gawo lililonse ladongosolo. Tepi imodzi simakwanira zochitika zonse munyumba yovuta.

Chochitika ichi chinandikankhira ku njira yosakanizidwa. Pakulumikiza ma duct wamba, tepi yapamwamba kwambiri, yokhazikika yokhala ndi thovu lotsekeka. Kwa ma plenum, kulumikiza zida, ndi malo okhala ndi kugwedezeka kapena kutentha, nthawi zambiri ndimayika mkanda wa mastic wopanda poizoni pamwamba pa msoko wa tepi. Ndi lamba-ndi-suspenders, koma imakulitsa moyo wadongosolo lopanda mpweya kwambiri.

Choncho, Kodi Pali Yankho Labwino Kwambiri?

Osati kwenikweni. Palibe chinthu chimodzi chomwe chimapambana nthawi zonse. Tepi yabwino kwambiri ya gasket ya HVAC yokhazikika ndi njira yosankha. Zimayamba ndi tepi yomwe ili ndi: chokhazikika, chokhazikika cha polima (monga EPDM yapamwamba kapena polyethylene yolumikizidwa); zomatira zovutirapo (acrylic kapena butyl) zofananira ndi zinthu zam'mwamba ndi chilengedwe; ziphaso zamoto ndi mpweya wamkati (monga UL Greenguard); ndi zochepa, zobwezeretsedwanso.

Koma mankhwalawa ndi theka la equation. Theka lina ndi nzeru kupanga ndi unsembe. Kusankha tepi yoyenera pa malo oyenera, kuwonetsetsa kuti malowo ndi aukhondo komanso okonzedwa, komanso ophunzitsa oyika kuti agwiritse ntchito moyenera ndizovuta kwambiri. Dongosolo lokhazikika la HVAC limamangidwa pazisindikizo zabwino chikwi. Tepiyo ndi ngwazi yosayimbidwa, koma imafuna kusankha kosamala, kodziwa zochitika.

Mndandanda wanga waposachedwa wa ochita masewera odalirika umaphatikizapo mitundu ngati 3M, Norton, ndi Tremco, koma nthawi zonse ndimayang'ana zambiri zaukadaulo wazopanga, osati dzina lokha. Ndipo nthawi zonse ndimayesa zitsanzo kuchokera kwa opanga atsopano, omwe amayang'ana kwambiri mfundo zachuma zozungulira. Munda ukupita patsogolo. Cholinga sikupeza mankhwala amatsenga, koma kumanga kumvetsetsa mozama momwe zipangizozi zimakhalira zaka zambiri, osati zaka zokha. Ndiyo njira yeniyeni yokhazikika-kuganizira za moyo wa nyumbayo, osati bajeti yomanga.