Amakhoyili ama-Microchannel asetshenziswa isikhathi eside embonini yezimoto ngaphambi kokuba avele emishinini ye-HVAC maphakathi nawo-2000s.Kusukela ngaleso sikhathi, ziye zanda kakhulu, ikakhulukazi kuma-air conditioner okuhlala, ngenxa yokuthi zilula, zihlinzeka ngokudluliswa kokushisa okungcono, futhi zisebenzisa isiqandisisi esincane kunezishintshi zokushisa ze-tube ezifakwe efini.
Kodwa-ke, ukusebenzisa isiqandisi esincane kusho futhi ukuthi ukunakekelwa okwengeziwe kufanele kuthathwe lapho kushajwa isistimu ngamakhoyili ama-microchannel.Lokhu kungenxa yokuthi ngisho nama-ounces ambalwa angehlisa isithunzi ukusebenza, ukusebenza kahle, nokuthembeka kwesistimu yokupholisa.
I-304 kanye ne-316 SS umhlinzeki we-Capillary Coil Tubes e-china
Kunamabanga ahlukene wezinto ezibonakalayo asetshenziselwa amashubhu ahlanganisiwe okushintshanisa ukushisa, amabhayela, izifudumezi ezinkulu nezinye izinhlelo zokushisa eziphezulu ezibandakanya ukushisisa noma ukupholisa.Izinhlobo ezahlukene zihlanganisa ishubhu lensimbi engagqwali engu-3/8 ehlanganisiwe.Ngokuya ngohlobo lwesicelo, imvelo yoketshezi oludluliselwa ngamashubhu kanye namabanga wezinto ezibonakalayo, lezi zinhlobo zamashubhu ziyahlukahluka.Kunezilinganiso ezimbili ezihlukene zamashubhu asongekile njengobubanzi beshubhu nobubanzi bekhoyili, ubude, ukujiya kodonga kanye namashejuli.Ama-SS Coil Tubes asetshenziswa ngobukhulu namabanga ahlukene kuye ngezidingo zohlelo lokusebenza.Kukhona izinto eziphezulu ze-alloy nezinye izinto ze-carbon steel ezitholakalayo kumashubhu ekhoyili.
Ukuhambisana Kwekhemikhali Kwethubhu ye-Stainless Steel Coil
Ibanga | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti | Fe | |
304 | imiz. | 18.0 | 8.0 | |||||||||
ubuningi. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||||
304L | imiz. | 18.0 | 8.0 | |||||||||
ubuningi. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||||
304H | imiz. | 0.04 | 18.0 | 8.0 | ||||||||
ubuningi. | 0.010 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | |||||
I-SS 310 | 0.015 ubuningi | 2 ubuningi | 0.015 ubuningi | 0.020 ubuningi | 0.015 ubuningi | 24.00 26.00 | 0.10 ubuningi | 19.00 21.00 | 54.7 imiz | |||
I-SS 310S | 0.08 ubuningi | 2 ubuningi | 1.00 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 24.00 26.00 | 0.75 ubuningi | 19.00 21.00 | 53.095 imiz | |||
I-SS 310H | 0.04 0.10 | 2 ubuningi | 1.00 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 24.00 26.00 | 19.00 21.00 | 53.885 imiz | ||||
316 | imiz. | 16.0 | 2.03.0 | 10.0 | ||||||||
ubuningi. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
316L | imiz. | 16.0 | 2.03.0 | 10.0 | ||||||||
ubuningi. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
316TI | 0.08 ubuningi | 10.00 14.00 | 2.0 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 16.00 18.00 | 0.75 ubuningi | 2.00 3.00 | ||||
317 | 0.08 ubuningi | 2 ubuningi | 1 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 18.00 20.00 | 3.00 4.00 | 57.845 imiz | ||||
I-SS 317L | 0.035 ubuningi | 2.0 ubuningi | 1.0 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 18.00 20.00 | 3.00 4.00 | 11.00 15.00 | 57.89 imiz | |||
I-SS 321 | 0.08 ubuningi | 2.0 ubuningi | 1.0 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 17.00 19.00 | 9.00 12.00 | 0.10 ubuningi | 5(C+N) 0.70 ubuningi | |||
I-SS 321H | 0.04 0.10 | 2.0 ubuningi | 1.0 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 17.00 19.00 | 9.00 12.00 | 0.10 ubuningi | 4(C+N) 0.70 ubuningi | |||
347/ 347H | 0.08 ubuningi | 2.0 ubuningi | 1.0 ubuningi | 0.045 ubuningi | 0.030 ubuningi | 17.00 20.00 | 9.0013.00 | |||||
410 | imiz. | 11.5 | ||||||||||
ubuningi. | 0.15 | 1.0 | 1.00 | 0.040 | 0.030 | 13.5 | 0.75 | |||||
446 | imiz. | 23.0 | 0.10 | |||||||||
ubuningi. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | 0.50 | 0.25 | ||||
904L | imiz. | 19.0 | 4.00 | 23.00 | 0.10 | |||||||
ubuningi. | 0.20 | 2.00 | 1.00 | 0.045 | 0.035 | 23.0 | 5.00 | 28.00 | 0.25 |
Ishadi Lezakhiwo Zemishini Yekhoyili Yeshubhu Yensimbi Engagqwali
Ibanga | Ukuminyana | I-Melting Point | Amandla Okuqina | Amandla Esivuno (0.2%Offset) | Ukwelula |
304/ 304L | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
304H | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 40 % |
310 / 310S / 310H | 7.9 g/cm3 | 1402 °C (2555 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 40 % |
306/ 316H | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
316L | 8.0 g/cm3 | 1399 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
317 | 7.9 g/cm3 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
321 | 8.0 g/cm3 | 1457 °C (2650 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
347 | 8.0 g/cm3 | 1454 °C (2650 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 35 % |
904L | 7.95 g/cm3 | 1350 °C (2460 °F) | Psi 71000 , MPa 490 | I-Psi 32000, i-MPa 220 | 35 % |
I-SS Heat Exchanger Coiled Tubes Amabanga alinganayo
IZINGA | I-WERKSTOFF NR. | I-UNS | I-JIS | BS | I-GOST | AFNOR | EN |
I-SS 304 | 1.4301 | I-S30400 | I-SUS 304 | 304S31 | 08Х18Н10 | I-Z7CN18-09 | I-X5CrNi18-10 |
I-SS 304L | 1.4306 / 1.4307 | I-S30403 | I-SUS 304L | 3304S11 | 03Х18Н11 | I-Z3CN18-10 | X2CrNi18-9 / X2CrNi19-11 |
I-SS 304H | 1.4301 | I-S30409 | - | - | - | - | - |
I-SS 310 | 1.4841 | S31000 | I-SUS 310 | 310S24 | 20Ch25N20S2 | - | I-X15CrNi25-20 |
I-SS 310S | 1.4845 | I-S31008 | I-SUS 310S | 310S16 | 20Ch23N18 | - | I-X8CrNi25-21 |
I-SS 310H | - | I-S31009 | - | - | - | - | - |
I-SS316 | 1.4401 / 1.4436 | I-S31600 | I-SUS 316 | 316S31 / 316S33 | - | Z7CND17-11-02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
I-SS 316L | 1.4404 / 1.4435 | I-S31603 | I-SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17-11-02 / Z3CND18-14-03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
I-SS 316H | 1.4401 | I-S31609 | - | - | - | - | - |
I-SS 316Ti | 1.4571 | S31635 | I-SUS 316Ti | 320S31 | Idatha ye-08Ch17N13M2T | I-Z6CNDT17-123 | I-X6CrNiMoTi17-12-2 |
I-SS 317 | 1.4449 | S31700 | I-SUS 317 | - | - | - | - |
I-SS 317L | 1.4438 | I-S31703 | I-SUS 317L | - | - | - | X2CrNiMo18-15-4 |
I-SS 321 | 1.4541 | I-S32100 | I-SUS 321 | - | - | - | I-X6CrNiTi18-10 |
I-SS 321H | 1.4878 | I-S32109 | I-SUS 321H | - | - | - | I-X12CrNiTi18-9 |
SS 347 | 1.4550 | S34700 | I-SUS 347 | - | Idatha ye-08Ch18N12B | - | I-X6CrNiNb18-10 |
I-SS 347H | 1.4961 | I-S34709 | I-SUS 347H | - | - | - | I-X6CrNiNb18-12 |
I-SS904L | 1.4539 | N08904 | I-SUS 904L | 904S13 | I-STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Idizayini ye-tube coil ecijile yendabuko bekuyindinganiso esetshenziswa embonini ye-HVAC iminyaka eminingi.Amakhoyili ekuqaleni ayesebenzisa amashubhu ayindilinga ethusi anamaphiko e-aluminium, kodwa amashubhu ekhopha abangela ukugqwala kwe-electrolytic kanye ne-anthill, okuholela ekwenyukeni kokuvuza kwamakhoyili, kusho uMark Lampe, umphathi womkhiqizo wamakhoyili esithandweni somlilo eCarrier HVAC.Ukuze kuxazululwe le nkinga, imboni iphendukele kumashubhu ayindilinga e-aluminium anamaphiko e-aluminium ukuze kuthuthukiswe ukusebenza kwesistimu nokunciphisa ukugqwala.Manje sekunobuchwepheshe be-microchannel obungasetshenziswa kukho kokubili ama-evaporator nama-condensers.
“Ubuchwepheshe be-microchannel, obubizwa nge-VERTEX technology at Carrier, buhlukile ngoba amashubhu ayindingilizi e-aluminium athathelwa indawo amashubhu ayisicaba ahambisanayo adayiselwe amaphiko e-aluminium,” kusho uLampe.“Lokhu kusabalalisa isiqandisi ngokulinganayo endaweni ebanzi, kuthuthukisa ukufudumeza ukuze ikhoyili isebenze kahle.Ngenkathi ubuchwepheshe be-microchannel busetshenziswa kuma-condenser angaphandle angaphandle, ubuchwepheshe be-VERTEX okwamanje busetshenziswa kuphela kumakhoyili okuhlala.”
NgokukaJeff Preston, umqondisi wezinsizakalo zobuchwepheshe e-Johnson Controls, umklamo we-microchannel udala ukugeleza kwesiqandisi esilula “sokungena nangaphandle” kwesiteshi esisodwa esihlanganisa ishubhu elishisa kakhulu phezulu kanye neshubhu elipholile ngaphansi.Ngokuphambene, isiqandisi esikukhoyili yeshubhu elinefidi evamile sigeleza eziteshini eziningi ukusuka phezulu kuye phansi ngephethini yenyoka, edinga indawo engaphezulu.
"Umklamo wekhoyili we-microchannel oyingqayizivele unikeza i-coefficient yokudlulisa ukushisa okuhle kakhulu, okwandisa ukusebenza kahle futhi kunciphise inani lesiqandisi esidingekayo," kusho u-Preston.“Ngenxa yalokho, amadivaysi aklanywe ngamakhoyili ama-microchannel ngokuvamile mancane kakhulu kunamadivayisi asebenza kahle kakhulu anemiklamo evamile yamashubhu acijile.Lokhu kulungele izinhlelo zokusebenza ezincishwe isikhala njengamakhaya anemigqa enguziro.”
Eqinisweni, ngenxa yokwethulwa kobuchwepheshe be-microchannel, kusho u-Lampe, Inkampani Yenethiwekhi ikwazile ukugcina amakhoyili amaningi esithando somlilo angaphakathi nezifudumezi zomoya zangaphandle ezinosayizi ofanayo ngokusebenzisa i-fin eyindilinga kanye nedizayini yeshubhu.
“Ukube asizange sisebenzise lobu buchwepheshe, bekuzodingeka sikhulise usayizi wekhoyili yesithando somlilo esingaphakathi sibe ngamasentimitha angu-11 ukuphakama futhi kwakuzodingeka sisebenzise i-chassis enkulu ye-condenser yangaphandle,” esho.
Ngenkathi ubuchwepheshe bekhoyili ye-microchannel busetshenziswa ngokuyinhloko esiqandisini sasekhaya, lo mqondo usuqala ukubamba ekufakweni kwezentengiselwano njengoba isidingo sokulula, imishini ehlangene iqhubeka ikhula, kusho uPreston.
Ngenxa yokuthi amakhoyili ama-microchannel aqukethe inani elincane lesiqandisi, ngisho nama-ounces ambalwa okushintsha kweshaji kungathinta impilo yesistimu, ukusebenza nokusebenza kahle kwamandla, kusho u-Preston.Kungakho osonkontileka kufanele bahlale behlola nomkhiqizi mayelana nenqubo yokushaja, kodwa ngokuvamile ibandakanya izinyathelo ezilandelayo:
NgokukaLampe, ubuchwepheshe be-Carrier VERTEX busekela inqubo efanayo yokusetha, yokushaja neyokuqala njengobuchwepheshe beshubhu eliyindilinga futhi abudingi izinyathelo ezingeziwe noma ezihlukile kunqubo yokushaja okupholile etuswayo njengamanje.
"Cishe amaphesenti angu-80 kuya kwangu-85 enkokhelo asesimweni soketshezi, ngakho-ke kumodi yokupholisa leyo volumu ikukhoyili yangaphandle yekhoyili kanye nephakethe lomugqa," kusho uLampe.“Lapho uthuthela kumakhoyili e-microchannel anevolumu yangaphakathi encishisiwe (uma kuqhathaniswa nemiklamo eyindilinga ye-tubular fin), umehluko wokuphatha uthinta kuphela u-15-20% wenani eliphelele, okusho inkambu encane, enzima ukukala umehluko.Kungakho indlela enconyiwe yokushaja isistimu iwukuba i-subcooling, echazwe emiyalweni yethu yokufaka.”
Kodwa-ke, inani elincane lesiqandisi kumakhoyili amancane lingaba inkinga lapho iyunithi yephampu yokushisa yangaphandle ishintshela kumodi yokushisisa, kusho uLampe.Kule modi, ikhoyili yesistimu iyashintshwa kanti i-capacitor egcina iningi le-liquid charge sekuyikhoyili yangaphakathi.
"Lapho umthamo wangaphakathi wekhoyili yasendlini ungaphansi kakhulu kunalowo wekhoyili yangaphandle, ukungalingani kwe-charge kungenzeka ohlelweni," kusho uLampe.“Ukuze kuxazululwe ezinye zalezi zinkinga, Inkampani Yenethiwekhi isebenzisa ibhethri elakhelwe ngaphakathi eliseyunithi yangaphandle ukuze ikhiphe futhi igcine imali eningi kwimodi yokushisisa.Lokhu kuvumela uhlelo ukuthi lugcine umfutho ofanele futhi luvimbele i-compressor ekukhukhuleni, okungaholela ekusebenzeni kabi njengoba uwoyela unganqwabelana kukhoyili yangaphakathi.”
Nakuba ukushaja isistimu ngamakhoyili amancane kungadinga ukunakwa okukhethekile emininingwaneni, ukushaja noma iyiphi isistimu ye-HVAC kudinga ngokunembile ukusebenzisa inani elifanele lesiqandisi, kusho uLampe.
"Uma uhlelo lugcwele ngokweqile, lungaholela ekusetshenzisweni kwamandla aphezulu, ukupholisa okungasebenzi kahle, ukuvuza kanye nokwehluleka kwe-compressor ngaphambi kwesikhathi," esho.“Ngokufanayo, uma isistimu ishajwa kancane, ukuqanda ikhoyili, ukudlidliza kwe-valve yokwandisa, izinkinga zokuqalisa i-compressor kanye nokuvalwa okungamanga kungenzeka.Izinkinga zamakhoyili ama-microchannel nazo azihlukile.”
Ngokuka-Jeff Preston, umqondisi wemisebenzi yezobuchwepheshe kwa-Johnson Controls, ukulungisa amakhoyili ama-microchannel kungaba inselele ngenxa yomklamo wawo oyingqayizivele.
“I-surface soldering idinga amathoshi egesi e-alloy kanye ne-MAPP angavamile ukusetshenziswa kwezinye izinhlobo zemishini.Ngakho-ke, osonkontileka abaningi bazokhetha ukufaka amakhoyili esikhundleni sokuzama ukuwalungisa.”
Uma kuziwa ekuhlanzeni amakhoyili e-microchannel, empeleni kulula, kusho u-Mark Lampe, umphathi womkhiqizo wamakhoyili esithandweni somlilo e-Carrier HVAC, ngoba amaphiko e-aluminum amakhoyili eshubhu elinezinsimbi agobeka kalula.Amaphiko amaningi agobile azonciphisa umthamo womoya odlula ikhoyili, kunciphise ukusebenza kahle.
“Ubuchwepheshe be-Carrier VERTEX buwumklamo oqine kakhulu ngoba amaphiko e-aluminium ahlala ngaphansi kancane kwamashubhu esiqandisi e-aluminium ayisicaba futhi agxivizwe kumashubhu, okusho ukuthi ukuxubha akuguquli kakhulu amaphiko,” kusho uLampe.
Ukuhlanza Kalula: Lapho uhlanza amakhoyili amancane, sebenzisa kuphela izinto zokuhlanza amakhoyili ezithambile, ezingenawo acid noma, ezimweni eziningi, amanzi nje.(kuhlinzekwe inkampani yenethiwekhi)
Lapho uhlanza amakhoyili ama-microchannel, u-Preston uthi gwema amakhemikhali anonya nokuwashwa ngomfutho, futhi esikhundleni salokho sebenzisa izihlanzi zamakhoyili ezithambile, ezingena-asidi noma, ezimweni eziningi, amanzi nje.
“Kodwa-ke, isiqandisi esincane sidinga ukulungiswa okuthile ekusilungiseni,” esho.“Ngokwesibonelo, ngenxa yobukhulu bayo, isiqandisi asikwazi ukumpontshwa lapho ezinye izingxenye zohlelo zidinga isevisi.Ngaphezu kwalokho, iphaneli yezinsimbi kufanele ixhunywe kuphela uma kunesidingo ukuze kuncishiswe ukuphazamiseka kwevolumu yesiqandisi.”
U-Preston wengeze ngokuthi i-Johnson Controls isebenzisa izimo ezimbi kakhulu endaweni yayo yokufakazela yaseFlorida, okukhuthaze ukuthuthukiswa kwama-microchannel.
"Imiphumela yalezi zivivinyo isivumela ukuthi sithuthukise ukuthuthukiswa komkhiqizo wethu ngokwenza ngcono ama-alloys amaningana, ukujiya kwamapayipi kanye nezindawo zamakhemikhali ezithuthukisiwe emkhathini olawulwayo wenqubo yokuhlanganisa ukuze kukhawulwe ukugqwala kwamakhoyili kanye nokuqinisekisa ukuthi amazinga aphezulu okusebenza nokuthembeka ayafinyelelwa," esho."Ukwamukelwa kwalezi zinyathelo ngeke nje kukhulise ukwaneliseka kwabanikazi bezindlu, kodwa kuzosiza nokunciphisa izidingo zesondlo."
Joanna Turpin is a senior editor. She can be contacted at 248-786-1707 or email joannaturpin@achrnews.com. Joanna has been with BNP Media since 1991, initially heading the company’s technical books department. She holds a bachelor’s degree in English from the University of Washington and a master’s degree in technical communications from Eastern Michigan University.
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-24-2023