ʻO nā mea hoʻololi wela Microchannel (MCHEs): Hoʻololi i nā Condensers CRAC no ka Pono Center Data
No nā kikowaena ʻikepili, ua hoʻopau ʻia nā condenser -a i ʻole{1}}maha no ka mālama ʻana i ka hana kikowaena a me ka hoʻohaʻahaʻa ʻana i ka PUE (Power Usage Effectiveness). ʻO nā mea hoʻololi wela maʻamau -pahu maʻamau i hāʻule pinepine-he nui, kūpono ʻole, a kiʻekiʻe ka -mālama. KomoNā mea hoʻololi wela microchannel (MCHEs): hoʻolālā ʻia me nā kahawai kahe microscale (0.1–2 mm), kahi hale alumini i hoʻohui ʻia, a me ka hoʻoheheʻe ʻana i ka ʻūhā, hoʻoponopono nā MCHE i kēia mau wahi ʻeha me ka hāʻawi ʻana i ka waiwai maoli no nā hana kikowaena data. Ma lalo iho ke ʻano o ko lākou kū ʻana, me nā tweak maʻamau e hoʻonui i ko lākou hopena.
Pōmaikaʻi no ka hoʻohana ʻana: E hoʻoholo i nā wahi ʻeha nui o ka Center Data Center
ʻAʻole "hoʻomaikaʻi" wale nā MCHE ma nā condensers kuʻuna-e wehewehe hou lākou i ka mea hiki i nā kikowaena ʻikepili i kālele ʻia i ka pono, ka hakahaka, ke kumu kūʻai, a me ka hilinaʻi.
1. 30–50% ʻoi aku ka maikaʻi o ka hoʻololi ʻana i ka wela=PUE haʻahaʻa
Paipai nā kikowaena ʻikepili no ka mālama ʻana i ka PUE ma lalo o 1.3-a he mea kaua huna nā MCHE. Hoʻokumu ko lākou mau awāwa microscale i kahi ʻāpana ili kūikawā nui (200–350 m²/m³, 2–3x ka nui o nā kumu hoʻohālike o ka tube{15}}fin), e koi ana i nā mea refrigerant (e like me R134a a i ʻole R410A) i loko o ke kahe haunaele ikaika (Reynolds helu Re > 2300). Hoʻemi kēia i ka pale ʻana i ka wela, e koi ana i ka helu hoʻoili wela i 400–600 W/(m²·K) (vs. 200–300 W/(m²·K) no ka pahu-fin).
He aha kēia manaʻo iā ʻoe: No ka haʻawe hoʻomaha 100 kW, ʻoki nā MCHE i ka mahana condensing ma 3-5 degere. ʻO kēlā me kēia hāʻule 1 degere e hōʻemi i ka hoʻohana ʻana i ka mana compressor e 2-3%, e unuhi ana i ka 25-35% haʻahaʻa i ka hoʻohana ikehu CRAC. No kahi kikowaena ʻikepili 1000 m², ʻo ia ka 30,000–42,000 kWh i ka mālama uila makahiki-a ua emi iho ka PUE mai ka 1.4 a i lalo i ka 1.25.
Pono no: -mau kikowaena ʻikepili kiʻekiʻe (ka mana mana > 300 W/m²) a i ʻole e hoʻopaʻa hou ana i nā ʻāpana CRAC kahiko (ʻaʻole pono e hoʻonui i ka lewa no ka hoʻoikaika ʻana i ka hoʻoilo).
2. 30–50% ʻoi aku ka liʻiliʻi, 40–60% ʻoi aku ka māmā: mālama i nā wahi kikowaena ʻikepili waiwai.
He kumu kūʻai nui ka papa waena o ka ʻikepili-a hoʻopau ʻia ia e nā mea hoʻoheheʻe kuʻuna -fin condenser. ʻO ka MCHE nā -aluminum palahalaha-tube + hoʻolālā fin i hoʻohui ʻia e hoʻopau i nā piʻo keleawe nui a me nā āwaha hope e hoʻoheheʻe ʻia ana nā kumu hoʻohālike.
No ka 100 kW ea -hoonohonoho hooluolu:
Volume: Loaʻa nā MCHE i ka ~0.8 m³ (vs. 1.2–1.3 m³ no ka paipu-fin), hiki ke maʻalahi i nā ʻaoʻao a i ʻole nā kihi.
Kaumaha: Ma ~80 kg (vs. 150 kg no ka paipu-fin), kūpono nā MCHE no nā pū'ulu CRAC ma luna o ka hale-e ho'emi lākou i ka ukana o ka hale a 'oki i nā kumukū'ai ho'okomo ('a'ole pono nā mea hāpai kaumaha).
3. 50–70% Liʻiliʻi i ka mea hoʻoheheʻe: ʻoki i nā kumukūʻai a hoʻokō i nā lula kaiapuni
He kumukūʻai a hoʻoponopono ʻia nā pahu pahu hau e like me R410A (e mahalo i ka F{1}}Gas Regulation a me KinaʻOmaomao a me Haʻahaʻa -Loaʻi Kūkākūkā Carbon no nā kikowaena ʻikepili). ʻO ka nui o ke kahawai liʻiliʻi o nā MCHE (1/3–1/2 o ka paipu-fin) e hōʻemi ana i nā pono o ka pahu hau:
Pono ka ʻōnaehana 100 kW e hoʻohana ana iā R410A i 2.5–3.5 kg wale nō o ka pahu hau (vs. 8–10 kg no ka paipu-fin)-e mālama i ~300–390 CNY no kēlā me kēia ʻāpana i mua.
ʻOi aku ka liʻiliʻi o nā wahi leak (40% ka liʻiliʻi ma mua o ka paipu-fin, mahalo i nā poʻo poʻomanaʻo i hoʻohui ʻia) ʻo ia ka haʻahaʻa o ka pōʻino o ke kaiapuni a ʻaʻohe kumu kūʻai hoʻonui -
4. Kū'ē Kū'ē & 10,000-Hour MTBF: E holo mau nā CRAC 24/7
Holo mau nā kikowaena ʻikepili -a he pōʻino ka manawa hoʻomaha. 'A'ole hiki wawe ka paipu ku'una -condensers ma muli o ke keleawe-aluminum galvanic corrosion, akā, kūkulu 'ia nā MCHE e mau loa:
Hana ʻole: Hoʻopau ʻia ka "pahu keleawe-aluminum" (kahi kumu hoʻoheheʻe nui).
ʻO nā uhi maʻamau: ʻO nā uhi epoxy a i ʻole polytetrafluoroethylene (20–50 μm mānoanoa) e hoʻoikaika i ka pale ʻana i ka paʻakai mai 500 mau hola a ʻoi aku i 1500 mau hola.
Ka hopena? Loaʻa ka MTBF (Mean Time Between Failures) i 10,000 hola-aneane papalua ko ka paipu-fin (5,000–6,000 hola). Hoʻemi liʻiliʻi=manawa hoʻomaha no kāu kikowaena ʻikepili.
Hoʻololi ʻenehana maʻamau: Hana i nā MCHE e hana no kāu CRAC
ʻAʻole nā MCHE he "hoʻokuʻu-i" pani-pono lākou i nā tweaks e hoʻohālikelike i nā pono kūikawā o nā CRAC. Penei kā mākou hoʻomaikaʻi ʻana iā lākou no nā kikowaena ʻikepili:
1. Hoʻolālā akamai no ka hoʻouka ʻana a me ka walaʻau haʻahaʻa
Nā ala -nui: Piʻi ka ukana o ka server i ke ao a hāʻule i ka pō. Hoʻohana nā MCHE i 2-4 ʻāpana kahe kahe, i hui pū ʻia me nā kiwi hoʻonui uila, e hoʻoponopono i ke kahe o ka refrigerant: piha piha no nā piko, hiki i ka hapa no nā lulls. Hōʻalo kēia i ka "haʻahaʻa-haʻahaʻa ʻole" e hoʻopilikia ana i nā condenser kuʻuna -pass condenser.
ʻO nā ʻili mālie: Pono nā kikowaena ʻikepili i ka walaʻau ʻAʻole i like a i ʻole 60 dB (A). Hoʻohana nā MCHE i nā ʻuala haiki -pitch louvered (1.8–2.2 mm spacing) a me -ea pā haʻahaʻa (1.5–2.0 m/s)-ʻoki ʻana i ka walaʻau ma 3–5 dB (A) vs. tube-fin, no laila, hana ʻole nā hui (hana a mālama).
2. (Corrosion & Clogging Protection): Kūkulu ʻia no nā Kaiapuni Center Data
ʻO ka lepo, ka uahi pāhiko UPS, a me ka hoʻonui ʻana i ka wai, he mau pōʻino ke kikowaena ʻikepili-MCHEs e hoʻoponopono iā lākou-ma:
ʻAi -ʻelua ʻāpana anti-corrosion: Hoʻonui ka Chromate passivation (5–10 μm) i ka hoʻopili ʻana, aʻo ka papa luna epoxy (20–30 μm) e poloka i ka media corrosive. Hōʻike nā hoʻāʻo e kūʻē i ka ʻōpala no nā makahiki 8 ma nā kikowaena ʻikepili.
Wai-ka hoʻoponopono ʻana i ka ʻaoʻao pili (no ka wai-CRAC i hoʻoluʻu ʻia): Hiki i nā kaha MCHE (1–2 mm) ke hoʻonui ʻia-no laila, hoʻohui mākou:
100-mesh stainless steel inlet kānana e pahele i nā haumia.
Nā kaha liʻiliʻi (1 mm puka → 1.5 mm puka) no ka hoʻoemi ʻana i ka -rate piʻi e hoʻonui ai i ka unahi.
ʻO nā mea pale -meaʻai (e laʻa, polycarboxylic acid) e hoʻolōʻihi i ka wā hoʻomaʻemaʻe i 12 mahina (vs. 6 mahina no ka paipu-fin).
3. Hoʻohui ʻia ʻo CRAC Seamless: ʻAʻohe ʻōpala, ʻAʻohe Leak
ʻOi aku ka maikaʻi o nā MCHE i ka wā e hui pū ʻia me nā ʻōnaehana CRAC-mākou i hoʻopaneʻe i kēlā me kēia pilina:
Pāʻani pāʻani: He 15–20% ha'aha'a ka pale o ka ea ma mua o ka pu-fin. Hoʻohana mākou i nā peʻahi kaomi haʻahaʻa -static-(50–80 Pa) a me ka wikiwiki o ka pāpale ma lalo a i ʻole like me 1400 rpm no ka mālama ʻana i ka ikehu me ka ʻole o ka hoʻolili ʻana.
Leak-mea hoʻopale: Ua ʻoki nā poʻomanaʻo i hoʻohui ʻia mai ka 8–12 (pau-fin) a i ka 2–4. Mālama ʻia nā sila ferrule ʻelua i ka leaka ʻO ka liʻiliʻi a i ʻole like me 1×10⁻⁹ Pa·m³/s (no kēlā me kēia hoʻāʻo helium leak)-koʻikoʻi no ka palekana o ka pahu hau.
No ke aha ʻo MCHE ka hope o nā Condensers CRAC
No nā kikowaena ʻikepili, ʻaʻole ʻo MCHE he mea hoʻololi wela ʻoi aku ka maikaʻi-he ala ia e hoʻokō ai i nā pahuhopu hoʻomau, ʻoki i nā kumukūʻai, a mālama pono i nā kikowaena. Inā ʻoe e kūkulu nei i kahi kiʻekiʻe -mea hoʻonui a hoʻomaikaʻi paha i nā CRAC kahiko, hāʻawi nā MCHE i ka maikaʻi, mālama wahi, a me ka lōʻihi āu e pono ai no ka hoʻokūkū.
Mākaukau e hoʻololi i kāu mau condenser CRAC? E ʻimi pehea e hiki ai i nā MCHE ke hoʻohaʻahaʻa i kāu PUE a hoʻonui i ka hana o kāu kikowaena data i kēia lā.
Nā huahana pale: microchannel holoi holoi condenser, Kina microchannel holoi mīkini hoʻomaloʻo condenser mea hana, mea hoʻolako, hale hana
