Ukuqondisa Ukubhalwa Kwemali Yokufaka Kwezinhloso Zokugcina Iwindow nezindawo Zokungena

Ukuthinteka Kwemali Yokusebenza Nokuthinteka Kwemali Yokusebenza Yezinkampani Zokusebenza

Yini na ukuthi izinhloso zokugcina zezindowo nezindawo zokungena ezinamandla amaningi zihlala ukuthinteka kwemali yokusebenza kwe-HVAC

Izinhloso zokugcina zezindowo nezindawo zokungena kubhekwe kwiinkulungwane zokusebenza phakade, oku kunceda ukuphula indawo yokusebenzisa i-HVAC ngokuphula indlela okuyiyo yokuqhuba umoya phakathi kwazo. Lezi zikhombisa izigaba zokugcina umoya ezibizwa ngokuthi low-E glass coatings. Ngokuchanekileyo, le sigaba esihlukileyo sibuka umoya omubi (infrared radiation) kodwa sivumela umoya wokubona (visible light). Emasuku amakhulu aphakade, lezi zikhombisa zinokubhoka ngaphezu kwe-70% yomoya wokuphakama kwezulu ukufika emkhathini. Xa sibheka izikhombisa eziningi zezinye izikhombisa eziphakathi kwezinye izikhombisa ezinamagasi njenge-argon noma krypton, zinamandla okugcina umoya phakathi kwazo. Le ndlela yokusebenza iphula umoya wokugcina ngaphezu kwe-30% kuya kuma-50% xa kubhekwa kwi-zikhombisa ezinye zezinye zokuziphatha. Izifreme ezinamandla okugcina umoya nokugcina umoya ngokupheleleyo zikhubaza umoya ukufika noma ukuphuma. Ngokwesibonelo se-United States Department of Energy, umoya owodwa ukufika noma ukuphuma kubhekwa ngaphezu kwe-25% kuya kuma-30% yezinto zokusebenza zokuphula umoya emakhaya. Ngokulungiselela le nto, izimo zomoya emkhathini ziyabeka ngokupheleleyo ngalendlela yonke. Oku kuthetha ukuthi izikhombisa zokusebenza zingafuni ukusebenza ngokupheleleyo, ikakhulu emasuku abo abanamandla aphakade xa bonke baphatha i-AC. Ngokwenza oku, izixhobo ziyadlala ngokupheleleyo ngoba azisemthandazeni ngokupheleleyo, futhi ukusebenza kwemithombo yomoya kushintsha ngaphezu kwezinye izinto.

Ukulinganisa Imiphumela Yemisebenzi Yomnyaka Ngokwesikhundla (I-IECC Regions 1–8)

Imiphumela yomnyaka yokusebenzisa izinyathelo zokuvula nezinyathelo zokufuna zihlukahlukene kakhulu ngokwesikhundla sezinyathelo zokuhlanza kwe-IECC, noma kusetyenziswa ukuthi kuzoba kubhekene nokuhlanya okuphakeme noma kuzoba kubhekene nokuhlanya okuphakeme kokuchitha:

Ngokwesibonelo se-Department of Energy sase-United States, ngonyaka ka-2023, abantu abahlala ku-Region 4 bethula phakathi kwe-$285 ne-$415 ngonyaka ngokwenza ukuthintana nokunquma. Ngakolunye uhlangothi, abantu base-Region 7 bafika ekuthintaneni kwabo kwezindleko zokunquma phakathi kwe-$320 ne-$480 ngonyaka. Kungani le zidinga ezinkulu? Kuyinto yokuqonda ukuthi kusebenza kanjani izindawo zabo. Amazone esentla kusuka ku-zone 1 kuze ku-zone 4 bethula kakhulu ngoba izindlu zizokhanya kakhulu ngeminyaka emihlathane. Kuzwela kwezindawo zaseNtshonalanga kusuka ku-zone 5 kuze ku-zone 8, izindlu zinamandla okugcina umoya omkhulu ngokwesibonelo, futhi lokhu kubiza le zidinga. Izinhlelo zonke zisebenza ngokwalezi zimithi zokusebenza zokwakha zika-IECC. Lezi zimithi ziyabiza ukuthi kufanele kubhekwe izinkampani zokugcina umoya ezinkulu uma ubuhlungu bezinsuku zibuyisa, okubhalwa ngokuthi i-U-factor iyofanele ibe ngu-0.30 noma ngapansi kwalokho.

Ukubuyiswa kwezinto zokuvulwa kwezindlu nezindawo zokuvulwa kwezindlu zokufaka isikhundla, nokuthenga kwezinto zokufaka isikhundla

Izidata zaseNingizimu Afrika: Izinga Lokufaka vs. Ukubuyiswa Kwesikhundla (Inqubo yama-Remodeling Magazine ya-2023)

Abathengi besebenzisa izisifundo sezinkampani zokufaka amadolo nezindawo zokufaka ezihle kuzokubuyisa 65% yezindlela zabo zokwakha kusukela ekuthengeni kwabo—kubhala ngaphezulu kwezindlela zokufaka eziphansi ngamaphuzu angu-15, ngokusho kwe-2023 Remodeling Magazine Report. Lokhu kubhekwa kusukela ekuphakanyiseni kwesibonelo sesikhanda, ukuthembelwa kwezindlela zokusebenza zokugcina imali, nokuthandana kakhulu kwebhaya ngamadolo nezindawo zokufaka ezithunywa ngokuthe ngokuhle.

Ukuqiniseka Kwemali Yezinto Ezihle Kwezindawo Zokuthengiselwa Ezinconywa: Izinto Ezihle Ngaphandle Kwamadolo Nezindawo Zokuthengiselwa Zokuthula

Amakhaya ene-systems evela kwezinto ezisakhiwe ngokwesibonelo kumele abafunde imali enenhle uma kuzokhokhwa kumakheti emhlophe wezindlu. Kuma-luxury homes, abasebenzi baphawula ukuthi izindlela zokubala ziyagcina phakathi kwe-12% kuya kwe-18% ngoba zonke izinto zihambisana ngokuphelele ngezinhloso zomkhakha wamakhaya futhi zimateriali eziningi zokukhula okungcono kakhulu ekhona kuphela. Amakhaya amanqanqane akhona kusodwa kahle, kuyabonakala ukuthi kufika kwe-7% kuya kwe-9% kwezindlela zokubala ngokuthi zikhulisa kakhulu futhi zinamandla okuhamba ngendlela eyodwa yezindlu ezintsha ezithandwa ngabathengi bama-zindlu. Uma sibheka phambili, indawo yokuvula nezinyoka kwenhlabathi yaseNorth America iyasemthethweni ukufika kwezimali ezingu-50 billion dollars ngemuva kwe-decade leyi, okuyavumela ukuthi abathengi bama-zindlu banqanqana kakhulu ngamadonga amashumi amaningi okuthi ahambe ngokuphelele ngezinhloso zamakhaya esifundazwe. Futhi masibheke phambi kwamandla okugcinwa kwezikhathi eziningi—lakho kuyasebenza kakhulu ukuthuthukisa umlando wokuthengiswa kabusha ngoba kususa amaphupho okuthi kuzokhula kwezindlela zokusebenzisa izindlu ezizimeleyo okungaba yinkambo yokuthi abathengi baya kususa.

Amathuba Okukhula Kwesikhathi Sokusebenza: Ukuphatha Kakhulu, Ukugcina, Nokudala Kwesystem

Ukunciphisa Imali Yokuhlela Isikhathi Sokuphila Ngemithambo Yezindawo Zokufinyeza Nezindawo Zokuvula Eziphathelene Nokuthuthukisa (NAHB 2023 Benchmark)

Izinyango nezinyawo ezihle kakhulu zokwakha zizokhupha izindleko abantu baziqatha ngazo ngeminyaka yonke. Ngokwesicelo sesikhathi samva sase-2023 esiphathelene ne-NAHB, abantu abazikhiwe lezi zinto ezihle kakhulu bafuna ukuthabatha phansi kusukela ema-15% kuze kube ema-30% kuzindleko zokuhlela ngeminyaka yonke kunye nezinto eziphansi kwenkampani. Lokhu kungani? Lezi zinhlelo zisebenzisa izinto ezihle kakhulu njenge-fiberglass composites nezinyawo zesilamini esizimele ukuvimbela ukuthi umoya udlule. Lezi zinto zingahleli noma zingavulwa ngokushesha xa zihlala kumaphuzu amaningi. Abahlali basekhaya bafuna ukubhala kabusha ngokushesha, baza kuthenga izinkampani zokuvimbela ngokushesha, futhi bafuna ukuguqula izinto zokusebenza ngokushesha. Konke lokhu kufana nokuthabatha phansi kuzindleko. Ngokujwayelekile, abantu abaningi bafuna ukuthabatha phansi kusukela ema-$1,200 kuze kube ema-$2,500 ngeminyaka eyisikhombisa ngoba bakhetswe izinto ezizimele ukudlula iminyaka.

Ukubhukisa Kwemfundo, Isikhathi Sokusebenza Kwemithombo, Nokuthengiselwa Kwemali Yokubuyisela

Kodwa kufundwa ngokubuyisela kweminye yezinyawo, imifundo eyadlulayo ekubeni yinkampani yezinyawo nezinto eziphelele zokusebenza kuzoba yinto eyathintana ngokuphelele ngemali okufuneka ukuthengiselwa ngazo ngalokusho. Izinyawo eziningi ziyabuyiselwa phakathi kwe-15 kanye ne-20 iminyaka emva kwalokho. Kodwa lezi zikhombisa zokuhle kakhulu zokubuyisela ziyabona imifundo yazo yizigaba phakathi kwe-30 kanye ne-50 iminyaka, izibonisa izinyawo zokubuyisela nezinyawo zokubuyisela. I-fiberglass efuna ukusebenza kahle kuyasebenza kude kune-40 iminyaka, ngaphandle kwezinyawo zokubuyisela ezinomkhawulo wevinyl ozinomkhawulo we-20 iminyaka ngaphambi kokubonwa kokugqibela. Lokhu kusisiza kahle ukuthi abahlali baleli bafanele ukuthenga kabusha izinyawo ngeminyaka engaphezu kwe-10 ngaphandle kwezinyawo zokubuyisela. Ukubheka lokhu ngokubona ngokuguqula kwezimali kuyasiza kahle ukuthi lezi zisiza ziyabonakala kakhulu, futhi kuyasiza kahle ukuthi kuzobonakala ukuthi kuzosindiswa ngokuphelele ngokwesilinganiso se-40 percent emalini okuthengiselwa.

Amathuba Okukhula Kwemali Okuphakathi: Imvumo Yekhlima, Ukufaka, Nokuhlelwa Kwemibhalo

Kodwa kufuna ukuthola isiphumo esihle sokuhlanganisa imali kulezi zinhlobo zezinyawo nezindlu, izinto ezintathu eziphakeme kakhulu ziyimfuneko: indawo yokuqalisa, ubukhulu bekho bokufaka ngokuphelele, nokuzinikela ukuthi iziqephu zonke ziyisifanele. Siyabegina ngamaphakathi amahlanu okukhula kwezulu njengoba leyo iyahluka kakhulu ngokwesikhathi sokugcina umoya. Ngokusho kwe-IECC Region 5, okuyisikhathi esibomvu kakhulu, ngasemva kwe-Region 2, okuyisikhathi esikhulu kakhulu nesikhathi esihlukile kakhulu ngokwesikhathi sokugcina umoya. Amaphakathi amabomvu kufuneka abe nenkampani yezinkampani eziningi ukuze bathole isiphumo esifanayo sokugcina umoya. Ukwenza lokhu okungafanele kungabeka isiphumo esisizwe phakathi kwe-15% ne-25%. Ubukhulu bekho bokufaka kubalulekile kakhulu futhi. Nangokuba izinyawo ezihle kakhulu azikwazi ukusebenza ngokuphelele uma kunezindawo ezingavumelekile ezithi umoya uzofika emuva kwazo. Lokhu kusiza amasistimu okugcina umoya nokugcina umoya ukusebenza kakhulu, ngokwesibonelo sase-RESNET esayisigaba sangemuva kweyilu elidlule, kusenziwa ngaphezu kwe-30% kakhulu. Kwanoma kunjalo, kukhona umbuzo wokuthi izivumelwano zokuthenga izinto ziyisifanele. Iziframu nezikhala ezisingafanele kuzoba zihlukana kakhulu, okuthi kuzoba kufuneka kubuyiselwe kabusha kusukela ekuplaneni. Zonke lezi zinto ziyahlukana ukuthi isikhundla esikhulu sokuthenga izinyawo nezindlu esikhulu kuyakwazi ukuthi kuyasebenza ngokuphelele njengoba kwasoloko kwalokho okwenzelwe ngokuphelele ngokwesikhathi eside.

Isikhombisi Sokuqala

1. Iziphakamiso zesiZulu se-low-E ziyini?

Iziphakamiso zesiZulu se-low-E ziyizikhumba ezincinci eziyafakwa kuzindiza ukuze zibuyisele izimithi zokugcina isikhati ukuze zilahlele ukuthuthukisa kwesikhati, ngakho-ke kubonakala umqondo wokubona.

2. Iziphakamiso zezindiza nezidonga zokwakha kusenza kanjani ukuthintana kwezimali?

Iziphakamiso zokwakha zisiza ukulahla izimali zokusebenza kwe-HVAC ngokulahla ukuthuthukisa kwesikhati ngokusebenzisa ukuthuthukisa okuhle nokuthunywa kwezindiza ngokuphelele, okubangela ukuthintana kwezimali kakhulu.

3. Indawo yomhlaba iyathintana kanjani nokuthintana kwezimali?

Ukuthintana kwezimali kuyiphakamiso ekuphakamiseni kuyiphakamiso lomhlaba, ngoba izindawo ezihlukahlukene zinamalungelo amahlanu okuthuthukisa nokuhlisa isikhati okuhlukeneyo, okuyithintana kwezimali.

4. Ngabe ukufaka izindiza nezidonga zokwakha kungasiza ukuvula indawo yokuthengiswa kwamanzi?

Yebo, iziphakamiso ezihle zokwakha zisiza ukuthintana kwezimali nokuthuthukisa ukuthuthukisa kwezindiza, okungasiza ukuvula indawo yokuthengiswa kwamanzi kakhulu.

5. Izincazelo zokusebenza kwezindiza nezidonga zokwakha ziyini?

Lezi zisitemu zizihluselela izinto ezinamandla okukhula kuzo okunakekela ukuthenga kwezinye izikhathi, nokuthenga kwezinye izikhathi kubonakalisa ukuthenga kwezinye izikhathi.

6. Yini inkulu yokuthenga kwezinkulungwane zokuthenga kwezinkulungwane?

Ukuthenga kwezinkulungwane kuyisisekelo sokuthenga kwezinkulungwane; ukuthenga kwezinkulungwane kungahleli kusuka kwezinkulungwane zokuthenga kwezinkulungwane, futhi kubonakalisa ukuthenga kwezinkulungwane zokuthenga kwezinkulungwane.