Ua hoʻohana ʻia nā coils Microchannel no ka manawa lōʻihi i ka ʻoihana automotive ma mua o ka ʻike ʻia ʻana i nā lako HVAC i ka waena o 2000s.Mai ia manawa, ua lilo lākou i mea kaulana loa, ʻoi aku hoʻi i nā ea ea noho, no ka mea he māmā lākou, hāʻawi i ka hoʻoili wela ʻoi aku ka maikaʻi, a hoʻohana liʻiliʻi i ka refrigerant ma mua o nā mea hoʻololi wela finned tube.
Eia nō naʻe, ʻo ka hoʻohana ʻana i ka refrigerant liʻiliʻi, ʻo ia hoʻi, pono e mālama nui ʻia i ka wā e hoʻouka ai i ka ʻōnaehana me nā microchannel coils.ʻO kēia no ka mea hiki i kekahi mau auneke ke hoʻohaʻahaʻa i ka hana, ka pono, a me ka hilinaʻi o kahi ʻōnaehana hoʻomaha.
304 a me 316 SS capillary Coil Tubes mea hoʻolako ma Kina
Aia nā ʻano mea like ʻole i hoʻohana ʻia no ka paipu wili no nā mea hoʻololi wela, nā paila, nā mea hoʻomehana super a me nā noi wela kiʻekiʻe e pili ana i ka hoʻomehana a i ʻole ka hoʻoluʻu.ʻO nā ʻano like ʻole ka 3/8 coiled stainless steel tubing pū kekahi.Ma muli o ke ʻano o ka noi, ke ʻano o ka wai e hoʻouna ʻia ana ma o nā paipu a me nā pae waiwai, ʻokoʻa kēia mau ʻano paipu.ʻElua mau ana like ʻole no nā paipu wili e like me ke anawaena o ka paipu a me ke anawaena o ka wili, ka lōʻihi, ka mānoanoa o ka paia a me nā papa kuhikuhi.Hoʻohana ʻia ka SS Coil Tubes i nā ʻāpana like ʻole a me nā māka e pili ana i nā koi noi.Aia nā mea hao kiʻekiʻe a me nā mea hao kalapona ʻē aʻe i loaʻa no ka paipu coil pū kekahi.
Hoʻohālikelike Kemimi o ka Tube Coil Stainless Steel
Papa | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti | Fe | |
304 | min. | 18.0 | 8.0 | |||||||||
max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||||
304L | min. | 18.0 | 8.0 | |||||||||
max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||||
304H | min. | 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 ka nui | 2 max | 0.015 ka nui | 0.020 ka nui | 0.015 ka nui | 24.00 26.00 | 0.10 ka nui | 19.00 21.00 | 54.7 min | |||
SS 310S | 0.08 ka nui | 2 max | 1.00 max | 0.045 ka nui | 0.030 ka nui | 24.00 26.00 | 0.75 ka nui | 19.00 21.00 | 53.095 min | |||
SS 310H | 0.04 0.10 | 2 max | 1.00 max | 0.045 ka nui | 0.030 ka nui | 24.00 26.00 | 19.00 21.00 | 53.885 min | ||||
316 | min. | 16.0 | 2.03.0 | 10.0 | ||||||||
max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
316L | min. | 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 ka nui | 10.00 14.00 | 2.0 ka nui | 0.045 ka nui | 0.030 ka nui | 16.00 18.00 | 0.75 ka nui | 2.00 3.00 | ||||
317 | 0.08 ka nui | 2 max | 1 max | 0.045 ka nui | 0.030 ka nui | 18.00 20.00 | 3.00 4.00 | 57.845 min | ||||
SS 317L | 0.035 ka nui | 2.0 ka nui | 1.0 ka nui | 0.045 ka nui | 0.030 ka nui | 18.00 20.00 | 3.00 4.00 | 11.00 15.00 | 57.89 min | |||
SS 321 | 0.08 ka nui | 2.0 ka nui | 1.0 ka nui | 0.045 ka nui | 0.030 ka nui | 17.00 19.00 | 9.00 12.00 | 0.10 ka nui | 5(C+N) 0.70 ka nui | |||
SS 321H | 0.04 0.10 | 2.0 ka nui | 1.0 ka nui | 0.045 ka nui | 0.030 ka nui | 17.00 19.00 | 9.00 12.00 | 0.10 ka nui | 4(C+N) 0.70 ka nui | |||
347/ 347H | 0.08 ka nui | 2.0 ka nui | 1.0 ka nui | 0.045 ka nui | 0.030 ka nui | 17.00 20.00 | 9.0013.00 | |||||
410 | min. | 11.5 | ||||||||||
max. | 0.15 | 1.0 | 1.00 | 0.040 | 0.030 | 13.5 | 0.75 | |||||
446 | min. | 23.0 | 0.10 | |||||||||
max. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | 0.50 | 0.25 | ||||
904L | min. | 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 |
Palapala Mechanical Properties o ka Pahu Pipi Kuhiliʻole
Papa | ʻO ka mānoanoa | Lae hehee | Ikaika U'i | Ka ikaika o ka hua (0.2%offset) | ʻO ka lōʻihi |
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 % |
SS Heat Exchanger Coiled Tubes Equivalent grades
KUMU | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
SS 304 | 1.4301 | S30400 | SUS 304 | 304S31 | 08Х18Н10 | Z7CN18-09 | X5CrNi18-10 |
SS 304L | 1.4306 / 1.4307 | S30403 | SUS 304L | 3304S11 | 03Х18Н11 | Z3CN18-10 | X2CrNi18-9 / X2CrNi19-11 |
SS 304H | 1.4301 | S30409 | – | – | – | – | – |
SS 310 | 1.4841 | S31000 | SUS 310 | 310S24 | 20Ch25N20S2 | – | X15CrNi25-20 |
SS 310S | 1.4845 | S31008 | SUS 310S | 310S16 | 20Ch23N18 | – | X8CrNi25-21 |
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 |
SS 316H | 1.4401 | S31609 | – | – | – | – | – |
SS 316Ti | 1.4571 | S31635 | SUS 316Ti | 320S31 | 08Ch17N13M2T | 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 |
SS 321H | 1.4878 | S32109 | SUS 321H | – | – | – | X12CrNiTi18-9 |
SS 347 | 1.4550 | S34700 | SUS 347 | – | 08Ch18N12B | – | X6CrNiNb18-10 |
SS 347H | 1.4961 | S34709 | SUS 347H | – | – | – | X6CrNiNb18-12 |
SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
ʻO ka hoʻolālā kuʻuna finned tube coil ka maʻamau i hoʻohana ʻia i ka ʻoihana HVAC no nā makahiki he nui.Ua hoʻohana mua nā coils i nā paipu keleawe a puni me nā fins alumini, akā ua hoʻoheheʻe nā ʻōpala keleawe i ka electrolytic a me ka anthill corrosion, e alakaʻi ana i ka piʻi ʻana o ka coil leaks, wahi a Mark Lampe, ka luna huahana no nā coils umu ma Carrier HVAC.No ka hoʻoponopono ʻana i kēia pilikia, ua huli ka ʻoihana i nā paipu alumini a puni me nā fila alumini e hoʻomaikaʻi ai i ka hana ʻōnaehana a hōʻemi i ka corrosion.I kēia manawa aia kahi ʻenehana microchannel hiki ke hoʻohana ʻia i nā evaporators a me nā condensers.
"ʻOkoʻa ka ʻenehana microchannel, i kapa ʻia ʻo ka ʻenehana VERTEX ma Carrier, i kēlā mau paipu alumini poepoe i hoʻololi ʻia me nā paipu parallel palahalaha i kūʻai ʻia i nā fins alumini," wahi a Lampe."Ke hāʻawi like nei kēia i ka refrigerant ma kahi ākea, hoʻomaikaʻi i ka hoʻoili wela i hiki ai i ka coil ke hana pono.ʻOiai ua hoʻohana ʻia ka ʻenehana microchannel i nā condensers o waho o ka hale, ua hoʻohana ʻia ka ʻenehana VERTEX i kēia manawa i nā coils noho.
Wahi a Jeff Preston, ka luna o nā lawelawe ʻenehana ma Johnson Controls, hoʻokumu ka hoʻolālā microchannel i kahi kahe hoʻoheheʻe maʻalahi "i loko a i waho" i loaʻa i kahi paipu wela ma luna a me kahi paipu subcooled ma lalo.I ka hoʻokaʻawale ʻana, kahe ka mea hoʻoheheʻe i loko o ka ʻili puʻupuʻu finned maʻamau ma nā ala he nui mai luna a lalo i ke ʻano serpentine, e koi ana i kahi ʻāpana ʻili.
"ʻO ka hoʻolālā coil microchannel kūikawā e hāʻawi i ka coefficient hoʻoili wela maikaʻi loa, e hoʻonui ai i ka pono a hoʻemi i ka nui o ka refrigerant e pono ai," wahi a Preston."ʻO ka hopena, ʻoi aku ka liʻiliʻi o nā mea i hoʻolālā ʻia me nā microchannel coils ma mua o nā mea hana kiʻekiʻe me nā hoʻolālā finned tube kuʻuna.He kūpono kēia no nā noi i hoʻopaʻa ʻia e like me nā hale me nā laina ʻole.
ʻOiaʻiʻo, mahalo i ka hoʻokomo ʻia ʻana o ka ʻenehana microchannel, wahi a Lampe, ua hiki iā Carrier ke mālama i ka nui o nā coils umu ahi i loko a me nā condensers ea hoʻoheheʻe waho i ka nui like ma ka hana ʻana me ka hoʻolālā ʻili a me ka paipu.
"Inā ʻaʻole mākou i hoʻokō i kēia ʻenehana, pono mākou e hoʻonui i ka nui o ka wili umu i loko i 11 iniha ke kiʻekiʻe a pono e hoʻohana i kahi chassis nui no ka condenser waho," wahi āna.
ʻOiai ke hoʻohana mua ʻia nei ka ʻenehana coil microchannel i loko o ka refrigeration home, ke hoʻomaka nei ka manaʻo e hopu i nā mea kūʻai aku e like me ke koi ʻana no ka māmā, ʻoi aku ka nui o nā lako paʻa e hoʻomau nei, wahi a Preston.
Ma muli o ka liʻiliʻi liʻiliʻi o ka mea hoʻoheheʻe microchannel coils, hiki i kekahi mau auneke o ka hoʻololi ʻana ke hoʻololi i ke ola ʻōnaehana, ka hana a me ka pono o ka ikehu, wahi a Preston.ʻO ia ke kumu e nānā mau ai ka poʻe ʻelike me ka mea hana e pili ana i ke kaʻina hana hoʻopiʻi, akā maʻamau e pili ana i nā pae aʻe:
Wahi a Lampe, kākoʻo ka ʻenehana Carrier VERTEX i ke kaʻina hana hoʻonohonoho like, uku a me ka hoʻomaka ʻana e like me ka ʻenehana pahu puni a ʻaʻole koi i nā ʻanuʻu i hoʻohui ʻia a ʻokoʻa paha i ke kaʻina hana ʻoluʻolu i kēia manawa.
"Ma kahi o 80 a 85 ka nui o ka uku i loko o ke kūlana wai, no laila ma ke ʻano hoʻoluʻu aia ka leo i loko o ka condenser coil a me ka laina laina," wahi a Lampe."I ka neʻe ʻana i nā coils microchannel me ka liʻiliʻi o loko (hoʻohālikelike ʻia me nā hoʻolālā fin tubular fin), ʻo ka ʻokoʻa o ka hoʻopiʻi e pili wale ana i ka 15-20% o ka nui o ka uku, ʻo ia hoʻi kahi kahua liʻiliʻi a paʻakikī.ʻO ia ke kumu i manaʻo ʻia e hoʻopaʻa i ka ʻōnaehana ma ka subcooling, kikoʻī i kā mākou ʻōlelo hoʻonohonoho.
Eia nō naʻe, hiki i ka liʻiliʻi o ka refrigerant i loko o nā microchannel coils ke lilo i pilikia i ka wā e hoʻololi ai ka ʻāpana wela o waho i ke ʻano wela, wahi a Lampe.Ma kēia ʻano, ua hoʻololi ʻia ka wili ʻōnaehana a ʻo ka capacitor e mālama i ka hapa nui o ka hoʻopiʻi wai i kēia manawa ʻo ia ka coil kūloko.
"Ke emi loa ka nui o loko o ka coil i loko ma mua o ka coil waho, hiki ke loaʻa kahi helu ʻole i ka ʻōnaehana," wahi a Lampe."No ka hoʻoponopono ʻana i kekahi o kēia mau pilikia, hoʻohana ʻo Carrier i kahi pākaukau i kūkulu ʻia i loko o ka ʻāpana waho e hoʻokahe a mālama i ka uku keu ma ke ʻano hoʻomehana.ʻAe kēia i ka ʻōnaehana e mālama i ke kaomi kūpono a pale i ka compressor mai ke kahe ʻana, hiki ke alakaʻi i ka hana maikaʻi ʻole no ka mea hiki ke kūkulu ʻia ka aila i loko o ka coil kūloko.
ʻOiai ʻo ka hoʻouka ʻana i kahi ʻōnaehana me nā microchannel coils hiki ke koi i ka nānā kūikawā i nā kikoʻī, ʻo ka hoʻopiʻi ʻana i kekahi ʻōnaehana HVAC pono e hoʻohana pololei i ka nui o ka refrigerant, wahi a Lampe.
"Inā nui ka ʻōnaehana, hiki iā ia ke alakaʻi i ka hoʻohana ʻana i ka mana kiʻekiʻe, ka hoʻoluʻu ʻole ʻana, nā leaks a me ka hemahema o ka compressor premature," wahi āna."Pēlā hoʻi, inā he haʻahaʻa ka ʻōnaehana, coil freezing, expansion valve vibration, compressor hoʻomaka pilikia a me nā pani hoʻopunipuni.ʻAʻole ʻokoʻa nā pilikia me nā microchannel coils.
Wahi a Jeff Preston, ka luna o nā lawelawe ʻenehana ma Johnson Controls, hiki ke paʻakikī ka hoʻoponopono ʻana i nā coils microchannel ma muli o kā lākou hoʻolālā kū hoʻokahi.
"Pono ka hoʻoheheʻe ʻana i ka ʻili i nā lama a me ka MAPP gas i hoʻohana ʻole ʻia i nā ʻano mea hana ʻē aʻe.No laila, nui nā mea ʻaelike e koho e hoʻololi i nā coils ma mua o ka hoʻāʻo e hoʻoponopono.
I ka hoʻomaʻemaʻe ʻana i nā coils microchannel, ʻoi aku ka maʻalahi, wahi a Mark Lampe, ka mea hoʻokele huahana no nā wili umu ma Carrier HVAC, no ka mea, ʻoi aku ka maʻalahi o nā ʻili alumini o nā wili pahu finned.ʻO ka nui o nā ʻeke ʻeke e hōʻemi i ka nui o ka ea e hele ana i loko o ka coil, e hōʻemi ana i ka pono.
"He hoʻolālā ʻoi aku ka ikaika o ka ʻenehana Carrier VERTEX no ka mea e noho liʻiliʻi ana nā ʻuala alumini ma lalo o nā paipu hoʻoheheʻe alumini palahalaha a ua hoʻopaʻa ʻia i nā paipu, ʻo ia hoʻi ʻaʻole e hoʻololi nui ka palaki ʻana i nā hope," wahi a Lampe.
Hoʻomaʻemaʻe maʻalahi: I ka hoʻomaʻemaʻe ʻana i nā coils microchannel, e hoʻohana wale i nā mea hoʻomaʻemaʻe coil non-acidic a i ʻole, i nā manawa he nui, i ka wai wale nō.(hāʻawi ʻia e ka mea lawe)
I ka hoʻomaʻemaʻe ʻana i nā coils microchannel, ʻōlelo ʻo Preston e pale i nā kemika koʻikoʻi a me ka holoi ʻana i ke kaomi, a ma kahi o ka hoʻohana ʻana i nā mea hoʻomaʻemaʻe coil maʻemaʻe ʻole a i ʻole, i nā manawa he nui, i ka wai wale nō.
"Akā naʻe, pono ka liʻiliʻi o ka refrigerant i kekahi mau hoʻololi i ka hana mālama," i ʻōlelo ai ʻo ia."No ka laʻana, ma muli o ka liʻiliʻi liʻiliʻi, ʻaʻole hiki ke puhi ʻia ka refrigerant i ka wā e pono ai nā ʻāpana ʻē aʻe o ka ʻōnaehana.Eia kekahi, pono e hoʻopili wale ʻia ka mea hana i ka wā e pono ai e hōʻemi i ka hoʻopau ʻana o ka nui o ka refrigerant.
Ua hoʻohui ʻo Preston e hoʻohana ana ʻo Johnson Controls i nā kūlana koʻikoʻi ma kāna kahua hōʻike Florida, kahi i hoʻoulu ai i ka hoʻomohala ʻana o nā microchannels.
"ʻO nā hopena o kēia mau hoʻāʻo e ʻae iā mākou e hoʻomaikaʻi i kā mākou hoʻomohala huahana ma o ka hoʻomaikaʻi ʻana i kekahi mau alloys, nā mānoanoa paipu a me nā kemika i hoʻomaikaʻi ʻia i ke kaʻina hana brazing lewa e hoʻopaʻa ʻia i ka corrosion coil a hōʻoia i nā pae kūpono o ka hana a me ka hilinaʻi e hoʻokō ʻia," wahi āna."ʻO ka lawe ʻana i kēia mau hana ʻaʻole e hoʻonui wale i ka ʻoluʻolu o ka mea hale, akā e kōkua pū kekahi i ka hōʻemi ʻana i nā pono mālama."
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.
ʻO ka maʻiʻo Sponsored kahi ʻāpana uku kūikawā kahi e hāʻawi ai nā ʻoihana ʻoihana i ka ʻike kiʻekiʻe, ʻae ʻole, ʻaʻole kūʻai aku i nā kumuhana hoihoi i ka poʻe nūhou ACHR.Hāʻawi ʻia nā mea i kākoʻo ʻia e nā hui hoʻolaha.Makemake ʻoe e komo i kā mākou ʻāpana maʻiʻo kākoʻo?E hoʻokaʻaʻike i kāu lunamakaʻāinana.
Ma ke Koi Ma kēia webinar, e aʻo mākou e pili ana i nā mea hou loa i ka R-290 refrigerant kūlohelohe a pehea e hopena ai i ka ʻoihana HVACR.
Ka manawa hoʻouna: Apr-24-2023