Anthu okhala ndi Stubby akhala akudziwika kwa nthawi yayitali pankhani yosunga zakumwa zoziziritsa kukhosi. Zomwe zimapezeka nthawi zambiri pamaphwando monga maphwando, zowotcha nyama ndi masewera, zida zothandizira izi zimapangidwira kuti zitini ndi mabotolo azitentha, kuti zisatenthedwe mwachangu. Koma kodi mwiniwakeyo amatsatiradi zamatsenga? Tiyeni tilowe mozama mu sayansi ndi magwiridwe antchito kumbuyo kwa zida zokondedwa izi.
Choyamba, tiyeni tikambirane kamangidwe ka bulaketi chachifupi. Zomwe zimadziwikanso kuti can coolers kapena koozies, zokwerazi nthawi zambiri zimapangidwa ndi neoprene, zinthu za rabara zopangira zomwe zimadziwika chifukwa cha zotchingira bwino kwambiri. Neoprene imakhala ndi matenthedwe otsika, zomwe zikutanthauza kuti sizimalola kutentha kudutsa mosavuta. Katunduyu amatenga gawo lofunikira pakusunga zomwe zili mu chitini kapena botolo kuti zizizizira kwa nthawi yayitali.
Ntchito yayikulu ya choyimilira cha stubby ndikupanga chotchinga pakati pa chotengera chakumwa ndi malo ozungulira. Zinthu za neoprene zimatsekereza mtsuko kapena botolo, zomwe zimathandiza kusunga kutentha kozizira pochepetsa kutentha kwa kutentha kwa kunja. Kutsekera kumeneku kumakhala kothandiza makamaka m'malo otentha kapena panja, kuletsa zakumwa kuti zisatenthe zisanathe.
Wina angadabwe kuti ma stents awa ndi othandiza bwanji. Kuti muyese mphamvu yake, m'pofunika kumvetsetsa zinthu zomwe zimakhudza momwe zakumwa zimatenthetsera mofulumira. Kusintha kwa kutentha kumachitika kudzera munjira zitatu zazikulu: conduction, convection, ndi radiation. Convection ndi kusamutsa kwachindunji kwa kutentha kudzera pakukhudzana ndi thupi, convection ndikusuntha kwa kutentha kudzera mukuyenda kwamadzimadzi kapena gasi, ndipo ma radiation amaphatikiza kusamutsa kutentha kudzera mafunde amagetsi.
Chimodzi mwazinthu zofunika kwambiri pakutengera kutentha ndi kudzera mu conduction. Dzanja lofunda likakhala ndi chakumwa chozizira, kutentha kwa dzanja kumasamutsidwa ku chitini kapena botolo, ndikuwonjezera kutentha kwake. Choyimiliracho chimakhala ngati chotchinga, chomwe chimachepetsa kukhudzana ndi manja ndi chidebecho. Zotsatira zake, ma conduction amachepetsa ndipo zakumwa zimakhala zozizira kwa nthawi yayitali.
Convection ndi chinthu china chofunikira kuganizira. Mtsuko kapena botolo likayikidwa pamalo otseguka, mpweya wotuluka umachotsa kutentha pamwamba pa chidebecho. Thezogwira zibwibwizambiri padziko lapansipachitini kapena botolo, kuchepetsa kukhudzana ndi kayendedwe ka mpweya. Zotsatira zake, mlingo womwe chakumwacho chimatenthedwa chifukwa cha convection ndi wochepa kwambiri.
Ma radiation, ngakhale alibe mphamvu monga conduction ndi convection, amathandizanso pakusintha kutentha. Chidebecho chikakhala ndi kuwala kwa dzuwa, mafunde a electromagnetic otulutsidwa ndi dzuwa amatha kutentha chakumwacho mkati. Choyimilira chokhazikika chimachepetsa kuwala kwa dzuwa popereka mthunzi ndikuphimba pamwamba pa botolo kapena botolo. Izi zimachepetsa mphamvu ya ma radiation, zomwe zimathandiza kuti zakumwa zizizizira.
Ngakhale kuti sayansi ya anthu okhala ndi tsinde lalifupi ikuwoneka kuti ikuwonetsa kuti ndi othandiza poletsa zakumwa kuti zisatenthedwe mwachangu, ndikofunikira kudziwa kuti mphamvu zawo zimatengeranso zinthu zina zakunja. Mwachitsanzo, ngati chakumwacho chakumana ndi kuwala kwa dzuwa kwa nthawi yaitali, choimirirapo chimakhala chosagwira ntchito polimbana ndi kutentha. Komanso, pakatentha kwambiri, mabulaketi olimba amatha kukhala osagwira ntchito pakuteteza kutentha.
Zonsezi, choyimitsira chododometsa chimakhala ndi zotsatira zoonekeratu momwe zakumwa zanu zimatenthera mofulumira. Chifukwa cha zinthu za neoprene, zotchingira zawo zimatha kuchepetsa kutentha kwa ma conduction, convection ndi radiation. Ngakhale kuti zoima zolimba sizingathetse mikhalidwe yakunja yoipitsitsa kapena kusunga zakumwa zotentha kuzizizira kwa nthawi yaitali, ndithudi zimapereka kusintha kwakukulu pakusunga zakumwa pa kutentha kotsitsimula.
Nthawi yotumiza: Jul-20-2023
