Iikhoyili ze-Microchannel zazisetyenziselwa ixesha elide kwishishini leemoto ngaphambi kokuba zivele kwizixhobo ze-HVAC phakathi kwe-2000s.Ukusukela ngoko, ziye zanda kakhulu, ngakumbi kwiindawo zokuhlala zomoya, ngenxa yokuba zikhaphukhaphu, zibonelela ngobushushu obungcono, kwaye zisebenzisa isikhenkcezisi esincinci kunezemveli zokutshintshiselana kobushushu betyhubhu.
Nangona kunjalo, ukusebenzisa isikhenkcisi esincinci kukwathetha ukuba kufuneka kuthathelwe ingqalelo ngakumbi xa utshaja inkqubo ngeekhoyili ze-microchannel.Oku kungenxa yokuba nee-ounces ezimbalwa zinokuthoba ukusebenza, ukusebenza kakuhle, kunye nokuthembeka kwenkqubo yokupholisa.
I-304 kunye ne-316 ye-SS capillary Coil Tubes umthengisi e-china
Kukho amabanga ahlukeneyo wemathiriyeli asetyenziselwa iityhubhu ezijijelweyo zokutshintsha ubushushu, iibhoyila, izifudumezi eziphezulu kunye nezinye izicelo zobushushu obuphezulu ezibandakanya ukufudumeza okanye ukupholisa.Iindidi ezahlukeneyo ziquka 3/8 coiled steel stainless ityhubhu ngokunjalo.Ngokuxhomekeke kubume besicelo, ubunjani be-fluid ehanjiswa ngeetyhubhu kunye namabakala ezinto eziphathekayo, ezi ntlobo zetyhubhu ziyahluka.Kukho imilinganiselo emibini eyahlukeneyo yeetyhubhu ezijijekileyo njengobubanzi betyhubhu kunye nobubanzi bekhoyili, ubude, ubukhulu bodonga kunye neeshedyuli.Iityhubhu ze-SS Coil zisetyenziswa kwimilinganiselo eyahlukeneyo kunye namabakala ngokuxhomekeke kwiimfuno zesicelo.Kukho izinto eziphezulu ze-alloy kunye nezinye izinto ze-carbon steel ezifumanekayo kwi-coil tubing.
Ukuhambelana kweMichiza ye-Stainless Steel Coil Tube
| IBanga | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti | Fe | |
| 304 | imiz. | 18.0 | 8.0 | |||||||||
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||||
| 304L | imiz. | 18.0 | 8.0 | |||||||||
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||||
| 304H | imiz. | 0.04 | 18.0 | 8.0 | ||||||||
| max. | 0.010 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | |||||
| SS 310 | 0.015 ubuninzi | 2 ubuninzi | 0.015 ubuninzi | 0.020 ubuninzi | 0.015 ubuninzi | 24.00 26.00 | 0.10 ubuninzi | 19.00 21.00 | 54.7 min | |||
| I-SS 310S | 0.08 ubuninzi | 2 ubuninzi | 1.00 max | 0.045 ubuninzi | 0.030 ubuninzi | 24.00 26.00 | 0.75 ubuninzi | 19.00 21.00 | 53.095 min | |||
| I-SS 310H | 0.04 0.10 | 2 ubuninzi | 1.00 max | 0.045 ubuninzi | 0.030 ubuninzi | 24.00 26.00 | 19.00 21.00 | 53.885 imiz | ||||
| 316 | imiz. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316L | imiz. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316TI | 0.08 ubuninzi | 10.00 14.00 | 2.0 ubuninzi | 0.045 ubuninzi | 0.030 ubuninzi | 16.00 18.00 | 0.75 ubuninzi | 2.00 3.00 | ||||
| 317 | 0.08 ubuninzi | 2 ubuninzi | 1 ubuninzi | 0.045 ubuninzi | 0.030 ubuninzi | 18.00 20.00 | 3.00 4.00 | 57.845 min | ||||
| SS 317L | 0.035 ubuninzi | 2.0 ubuninzi | 1.0 ubuninzi | 0.045 ubuninzi | 0.030 ubuninzi | 18.00 20.00 | 3.00 4.00 | 11.00 15.00 | 57.89 min | |||
| SS 321 | 0.08 ubuninzi | 2.0 ubuninzi | 1.0 ubuninzi | 0.045 ubuninzi | 0.030 ubuninzi | 17.00 19.00 | 9.00 12.00 | 0.10 ubuninzi | 5(C+N) 0.70 max | |||
| I-SS 321H | 0.04 0.10 | 2.0 ubuninzi | 1.0 ubuninzi | 0.045 ubuninzi | 0.030 ubuninzi | 17.00 19.00 | 9.00 12.00 | 0.10 ubuninzi | 4(C+N) 0.70 max | |||
| 347/ 347H | 0.08 ubuninzi | 2.0 ubuninzi | 1.0 ubuninzi | 0.045 ubuninzi | 0.030 ubuninzi | 17.00 20.00 | 9.0013.00 | |||||
| 410 | imiz. | 11.5 | ||||||||||
| max. | 0.15 | 1.0 | 1.00 | 0.040 | 0.030 | 13.5 | 0.75 | |||||
| 446 | imiz. | 23.0 | 0.10 | |||||||||
| max. | 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 | |||||||
| max. | 0.20 | 2.00 | 1.00 | 0.045 | 0.035 | 23.0 | 5.00 | 28.00 | 0.25 | |||
Itshathi yeeMpahla zoomatshini yeKhoyili yeTubing yeSisimbi estainless
| IBanga | Ukuxinana | Indawo yokunyibilika | Tensile strength | Ukomelela kweSivuno (0.2% i-offset) | Elongation |
| 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 | Psi 32000 , MPa 220 | 35 % |
I-SS Heat Exchanger Coiled Tubes amabakala alinganayo
| UMGANGATHO | WERKSTOFF NR. | UNS | I-JIS | BS | IGOST | I-FNOR | EN |
| I-SS 304 | 1.4301 | S30400 | I-SUS 304 | 304S31 | 08Х18Н10 | I-Z7CN18-09 | X5CrNi18-10 |
| I-SS 304L | 1.4306 / 1.4307 | S30403 | SUS 304L | 3304S11 | 03Х18Н11 | I-Z3CN18-10 | X2CrNi18-9 / X2CrNi19-11 |
| I-SS 304H | 1.4301 | S30409 | - | - | - | - | - |
| SS 310 | 1.4841 | S31000 | SUS 310 | 310S24 | 20Ch25N20S2 | - | X15CrNi25-20 |
| I-SS 310S | 1.4845 | S31008 | I-SUS 310S | 310S16 | 20Ch23N18 | - | X8CrNi25-21 |
| I-SS 310H | - | S31009 | - | - | - | - | - |
| SS 316 | 1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | - | Z7CND17-11-02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| SS 316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17-11-02 / Z3CND18-14-03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
| I-SS 316H | 1.4401 | S31609 | - | - | - | - | - |
| SS 316Ti | 1.4571 | S31635 | SUS 316Ti | 320S31 | 08Ch17N13M2T | I-Z6CNDT17-123 | X6CrNiMoTi17-12-2 |
| SS 317 | 1.4449 | S31700 | SUS 317 | - | - | - | - |
| SS 317L | 1.4438 | S31703 | SUS 317L | - | - | - | X2CrNiMo18-15-4 |
| SS 321 | 1.4541 | S32100 | SUS 321 | - | - | - | X6CrNiTi18-10 |
| I-SS 321H | 1.4878 | S32109 | I-SUS 321H | - | - | - | X12CrNiTi18-9 |
| SS 347 | 1.4550 | S34700 | SUS 347 | - | 08Ch18N12B | - | X6CrNiNb18-10 |
| I-SS 347H | 1.4961 | S34709 | I-SUS 347H | - | - | - | X6CrNiNb18-12 |
| I-SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | I-STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Uyilo lwekhoyili yetyhubhu ephothiweyo ibingumgangatho osetyenziswayo kwishishini le-HVAC iminyaka emininzi.Iikhoyili ekuqaleni zazisebenzisa iityhubhu zobhedu ezingqukuva ezinamaphiko e-aluminium, kodwa iityhubhu zobhedu zabangela ukubola kwe-electrolytic kunye ne-anthill, ekhokelela ekuvuzeni kokuvuza kweekhoyili, utshilo uMark Lampe, umphathi wemveliso yeekhoyili zesithando somlilo kwiCarrier HVAC.Ukusombulula le ngxaki, ishishini liye lajika kwiityhubhu ze-aluminium ezijikelezayo kunye ne-aluminium fins ukuphucula ukusebenza kwenkqubo kunye nokunciphisa ukubola.Ngoku kukho iteknoloji ye-microchannel enokusetyenziswa kuzo zombini i-evaporators kunye ne-condensers.
"Itekhnoloji ye-microchannel, ebizwa ngokuba yi-VERTEX itekhnoloji kwi-Carrier, yahlukile kuba iityhubhu ze-aluminium ezijikelezayo zitshintshwa ngeetyhubhu ezisicaba ezihambelanayo ezithengiswa kwiifins ze-aluminium," utshilo uLampe."Oku kusasaza ifriji ngokulinganayo ngakumbi kwindawo ebanzi, iphucula ukuhanjiswa kobushushu ukuze ikhoyili isebenze ngokufanelekileyo.Ngelixa itekhnoloji ye-microchannel yayisetyenziswa kwindawo yokuhlala yangaphandle, itekhnoloji yeVERTEX okwangoku isetyenziswa kuphela kwiikhoyili zokuhlala.
Ngokutsho kukaJeff Preston, umlawuli weenkonzo zobugcisa kwi-Johnson Controls, uyilo lwe-microchannel ludala i-channel elula "ngaphakathi nangaphandle" yefriji ehambayo equka ityhubhu eshushu kakhulu phezulu kunye ne-tube subcooled ezantsi.Ngokwahlukileyo, ifriji kwi-coil ye-tube ephothiweyo eqhelekileyo ihamba ngeendlela ezininzi ukusuka phezulu ukuya phezulu kwipatheni yenyoka, efuna indawo engaphezulu.
"Idizayini ekhethekileyo ye-coil ye-microchannel inika i-coefficient egqwesileyo yokudlulisa ukushisa, okwandisa ukusebenza kakuhle kunye nokunciphisa inani lefriji efunekayo," kusho uPreston.Ngenxa yoko, izixhobo eziyilwe ngeekhoyili ze-microchannel zihlala zincinci kunezixhobo ezisebenza ngokufanelekileyo kunye noyilo lwetyhubhu oludityanisiweyo.Oku kulungele ukusetyenziswa kweendawo ezifana namakhaya anemigca enguziro. ”
Enyanisweni, ngenxa yokwaziswa kobuchwephesha be-microchannel, utsho uLampe, uMthwali ukwazile ukugcina iikhoyili ezininzi zangaphakathi zesithando somlilo kunye ne-air conditioning condensers ezilingana ngobukhulu ngokusebenza ngephiko elingqukuva kunye noyilo lwetyhubhu.
"Ukuba asizange sisebenzise le teknoloji, bekuya kufuneka sandise ubungakanani bekhoyili yangaphakathi yomlilo ukuya kwi-intshi ezili-11 ukuphakama kwaye bekuya kufuneka sisebenzise i-chassis enkulu kwi-condenser yangaphandle," watsho.
Ngelixa itekhnoloji ye-coil ye-microchannel isetyenziswa ikakhulu kwisikhenkcisi sasekhaya, umbono uqalisa ukubamba kufakelo lwentengiso njengoko imfuno yokukhanya, izixhobo ezihlangeneyo ziqhubeka nokukhula, utshilo u-Preston.
Ngenxa yokuba iikhoyili ze-microchannel ziqulethe ixabiso elincinci lefriji, nokuba ii-ounces ezimbalwa zokutshintsha kwentlawulo zinokuchaphazela ubomi benkqubo, ukusebenza kunye nokusebenza kakuhle kwamandla, u-Preston uthi.Yiyo loo nto iikontraka kufuneka zihlale zijonga umenzi malunga nenkqubo yokutshaja, kodwa ihlala ibandakanya la manyathelo alandelayo:
Ngokutsho kweLampe, i-Carrier VERTEX iteknoloji ixhasa inkqubo efanayo yokumisela, ukuhlawulisa kunye nokuqaliswa njengeteknoloji yetyhubhu ejikelezayo kwaye ayifuni amanyathelo angaphezulu okanye ahluke kwinkqubo yokutshaja okupholileyo ngoku.
"Malunga ne-80 ukuya kwi-85 yeepesenti yentlawulo ikwimeko yolwelo, ngoko ke kwimo yokupholisa loo mthamo ukwi-coil condenser yangaphandle kunye nepakethe yomgca," utshilo uLampe."Xa ufudukela kwiikhoyili ze-microchannel ezinomthamo wangaphakathi oncitshisiweyo (xa kuthelekiswa noyilo lwe-tubular fin ejikelezayo), umahluko okhoyo uchaphazela kuphela i-15-20% yentlawulo epheleleyo, oku kuthetha ukuba intsimi encinci, enzima-ukulinganisa umehluko.Yiyo loo nto indlela ecetyiswayo yokubiza inkqubo kukupholisa kancinci, kucacisiwe kwimiyalelo yethu yokufaka.
Nangona kunjalo, inani elincinci lefriji kwiikhoyili ze-microchannel linokuba yingxaki xa iyunithi yepompo yokushisa yangaphandle itshintshela kwimodi yokufudumala, utshilo uLampe.Kule ndlela, i-coil yenkqubo itshintshiwe kwaye i-capacitor egcina uninzi lwentlawulo ye-liquid ngoku i-coil yangaphakathi.
"Xa umthamo wangaphakathi wekhoyili yangaphakathi ungaphantsi kakhulu kunekhoyili yangaphandle, ukungalingani kwentlawulo kunokwenzeka kwinkqubo," kusho uLampe.“Ukusombulula ezinye zezi ngxaki, iCarrier isebenzisa ibhetri eyakhelweyo ekwiyunithi yangaphandle ukuze ikhuphe kwaye igcine intlawulo egqithisileyo kwimowudi yokufudumeza.Oku kuvumela inkqubo ukuba igcine uxinzelelo olufanelekileyo kwaye ithintele i-compressor ekukhukuleni, oku kunokukhokelela ekusebenzeni kakubi njengoko ioli inokwakheka kwikhoyili yangaphakathi. "
Ngelixa ukutshaja inkqubo ngeekhoyili ze-microchannel kunokufuna ingqalelo ekhethekileyo kwiinkcukacha, ukutshaja nayiphi na inkqubo ye-HVAC kufuna ngokuchanekileyo isixa esichanekileyo sefriji, utshilo uLampe.
"Ukuba inkqubo igcwele kakhulu, inokukhokelela ekusebenziseni amandla aphezulu, ukupholisa okungahambi kakuhle, ukuvuza kunye nokungaphumeleli kwe-compressor kwangaphambi kwexesha," watsho.Ngokukwanjalo, ukuba inkqubo itshajiwe ngaphantsi, ukukhenkceza kweekhoyili, ukungcangcazela kwevalve yokwandisa, iingxaki zokuqalisa icompressor kunye nokuvalwa kobuxoki kunokwenzeka.Iingxaki ngeekhoyili ze-microchannel nazo ziyahluka. ”
Ngokutsho kukaJeff Preston, umlawuli weenkonzo zobugcisa kwi-Johnson Controls, ukulungisa iikhoyili ze-microchannel kunokuba ngumngeni ngenxa yoyilo lwazo olulodwa.
"I-soldering engaphezulu ifuna i-alloy kunye ne-MAPP iitotshi zegesi ezingasetyenziswanga kwezinye iindidi zezixhobo.Ke ngoko, iikontraka ezininzi ziya kukhetha ukutshintsha iikhoyili endaweni yokuzama ukuzilungisa.”
Xa kuziwa ekucoceni iikhoyili ze-microchannel, kulula ngokwenene, utsho uMark Lampe, umphathi wemveliso yeekhoyili zesithando somlilo kwi-Carrier HVAC, ngenxa yokuba amaphiko e-aluminiyam eetyhubhu eziphothiweyo zigoba ngokulula.Amaphiko amaninzi agobileyo aya kunciphisa umthamo womoya odlula kwikhoyili, ukunciphisa ukusebenza kakuhle.
"Itekhnoloji ye-Carrier VERTEX lolona yilo lomelele ngakumbi kuba amaphiko e-aluminiyam ahlala kancinane ngaphantsi kweetyhubhu zesikhenkcisi se-aluminiyam kwaye zigxininiswe kwiityhubhu, oku kuthetha ukuba ukuxubha akutshintshi iifins kakhulu," utshilo uLampe.
Ukucocwa ngokulula: Xa ucoca iikhoyili ze-microchannel, sebenzisa kuphela izicoci ezinobulali, ezingena-acidic okanye, kwiimeko ezininzi, amanzi nje.(kubonelelwe ngumthwali)
Xa ucoca iikhoyili ze-microchannel, u-Preston uthi ugweme iikhemikhali ezinzima kunye nokuhlamba uxinzelelo, kwaye endaweni yoko sebenzisa kuphela izicoci ezicolile ezingenayo i-acidic okanye, kwiimeko ezininzi, amanzi nje.
"Nangona kunjalo, ixabiso elincinci lefriji lifuna uhlengahlengiso oluthile kwinkqubo yokugcinwa," watsho."Umzekelo, ngenxa yobukhulu obuncinci, ifriji ayikwazi ukumpontshwa xa amanye amacandelo enkqubo efuna inkonzo.Ukongeza, iphaneli yesixhobo kufuneka iqhagamshelwe kuphela xa kuyimfuneko ukunciphisa ukuphazamiseka komthamo wefriji. "
U-Preston wongeze ukuba i-Johnson Controls isebenzisa iimeko ezigqithisileyo kwindawo yayo yokubonisa yaseFlorida, eye yakhuthaza ukuphuhliswa kwee-microchannels.
"Iziphumo zolu vavanyo zisivumela ukuba siphucule ukuphuhliswa kwemveliso yethu ngokuphucula i-alloys ezininzi, ubukhulu bombhobho kunye nokuphuculwa kweekhemistri kwi-emospheric elawulwayo ye-brazing process ukukhawulela i-coil corrosion kunye nokuqinisekisa ukuba amanqanaba afanelekileyo okusebenza kunye nokuthembeka kuyafezekiswa," watsho."Ukwamkelwa kwala manyathelo akuyi kwandisa ulwaneliseko lomninimzi kuphela, kodwa kuya kunceda nokunciphisa iimfuno zolondolozo."
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.
Umxholo oXhasiweyo licandelo elikhethekileyo elihlawulweyo apho iinkampani zoshishino zibonelela ngeziqulatho ezikumgangatho ophezulu, ezingakhethi cala, ezingasorhwebo kwizihloko ezinomdla kubaphulaphuli beendaba be-ACHR.Yonke imixholo exhasiweyo inikezelwa ziinkampani zentengiso.Unomdla wokuthatha inxaxheba kwicandelo lethu lomxholo oxhaswe ngemali?Qhagamshelana nommeli wendawo yakho.
KwiMfuno Kule webinar, siya kufunda malunga nohlaziyo lwamva nje lwe-R-290 yefriji yendalo kunye nendlela eya kuba nefuthe ngayo kwishishini le-HVACR.
Ixesha lokuposa: Apr-24-2023