I-Microchannel Heat Exchangers (MCHEs): Guqula i-CRAC Condensers ukuze iSebenzise iZiko leDatha

Kumaziko edatha, iComputer Room Air Conditioner (CRAC) condensers zenziwa-okanye{1}}ikhefu lokugcina ukusebenza komncedisi kunye nokwehliswa kwePUE (Usetyenziso oluFanelekileyo). Ityhubhu yesintu-iziguquli zobushushu zihlala zifutshane{4}}zininzi, azisebenzi, kwaye{5}}zinogcino oluphezulu. NgenaIMicrochannel yokuTshintsha ubushushu (MCHEs): yenziwe nge-microscale flow channels (0.1-2 mm), i-aluminium yonke -isakhiwo se-aluminium, kunye ne-vacuum brazing, ii-MCHEs zixazulula ezi ndawo zentlungu ngelixa zihambisa ixabiso elibonakalayo kwimisebenzi yeziko ledatha. Apha ngezantsi yindlela abagqama ngayo, kunye ne-tweaks yesiko ekhulisa impembelelo yabo.

IiNgcebiso zeSicelo esiPhambili: Sombulula iiNdawo eziPhakamileyo zeZiko leDatha

Ii-MCHEs aziphumi nje "ukuphucula" kwii-condensers zemveli{0}zichaza kwakhona okwenzekayo kumaziko edatha agxile ekusebenzeni, indawo, iindleko, kunye nokuthembeka.

1. 30–50% UFanelo oluPhezulu lokuThuthukiswa koBubushushu=IPUE esezantsi

Amaziko eenkcukacha alwela ukugcina i-PUE phantsi kwe-1.3-kunye ne-MCHEs sisixhobo esiyimfihlo. Imijelo yazo emincinci idala indawo enkulu ethile ephezulu (200–350 m²/m³, 2–3x leyo yetyhubhu{15}}imifuziselo yeefin), inyanzelisa izikhenkcezisi (ezifana ne-R134a okanye i-R410A) ukuba zibe ngumbhobhozo onamandla (inombolo yeReynolds Re> 2300). Oku kunciphisa ukuxhathisa kwe-thermal, ityhala utshintshiselwano lobushushu ukuya ku-400–600 W/(m²·K) (vs{13}}–300 W/(m²·K) kwi-tube-fin).

Kuthetha ukuthini oku kuwe: Kumthwalo wokupholisa we-100 kW, ii-MCHEs zisika ubushushu obujiyileyo nge-3–5 degree. Yonke i-degree ye-1 yehla kunciphisa ukusetyenziswa kwamandla e-compressor nge-2-3%, ukuguqulela kwi-25-35% ephantsi yokusetyenziswa kwamandla e-CRAC. Kwi-1000 m² iziko ledatha eliphakathi, yi-30,000–42,000 kWh yokonga umbane ngonyaka{15}}kwaye iPUE yehle ukusuka ku-1.4 ukuya ngaphantsi kwe-1.25.

Igqibelele:{0}}amaziko edatha yoxinano oluphezulu (uxinzelelo lwamandla > 300 W/m²) okanye ukufaka ngokutsha iiyunithi ezindala zeCRAC (akukho mfuneko yokwandisa isithuba sokunyusa ukupholisa).

2. 30–50% Incinci, 40–60% Khaphukhaphu: Gcina iSithuba seZiko leDatha eliBalulekileyo

Indawo yomgangatho wedatha inexabiso elikhulu-kwaye ityhubhu yesintu{1}}i-fin condensers iyayichitha. Ii-MCHE's zonke-iflethi ye-aluminiyam-ityhubhu + i-fin design ehlanganisiweyo isusa ukugoba okukhulu kobhedu kunye nezikhewu ezigutyungelwe ityhubhu{6}}emifuziselo.

Kumoya we-100 kW{1}}ukuseta opholileyo:

Umthamo: Ii-MCHEs zithatha ~0.8 m³ (vs. 1.2–1.3 m³ kwityhubhu{3}}ifin), ingena lula emacaleni erack okanye iikona.

Ubunzima: Kwi-~80 kg (vs{1}} kg yetyhubhu{2}}ifin), ii-MCHEs zilungele iiyunithi ze-CRAC eziphezu kophahla{3}}zehlisa umthwalo wokwakha kwaye zicuthe iindleko zofakelo (akukho zixhobo zokuphakamisa ezinzima ezifunekayo).

3. 50–70% Ngaphantsi kwesibandisi: Sika iiNdleko kunye nokudibana neMithetho yokusiNgqongileyo

Izikhenkcezisi ezifana ne-R410A ziyabiza kwaye zilawulwa (enkosi kwi-EU's F-Ulawulo lweGesi kunye neChina.UVavanyo loLuhlaza kunye noPhantsi{0} lweKhabhoni yoVavanyo lwaMaziko eDatha). Umthamo wetshaneli we-MCHEs omncinci (1/3–1/2 lowo wetyhubhu{5}}ifin) ucutha iimfuno zesikhenkcisi:

Inkqubo ye-100 kW esebenzisa i-R410A ifuna nje i-2.5–3.5 kg yesikhenkcisi (vs{4}}–10 kg kwityhubhu{6}}iphiko){7}}ukonga ~300–390 CNY ngeyunithi nganye ngaphambili.

Amanqaku avuzayo ambalwa (ama-40% ngaphantsi kwetyhubhu{1}}i-fin, enkosi kwizihloko ezihlanganisiweyo) zithetha umngcipheko ophantsi wokusingqongileyo kwaye akukho zikhenkcezi ezixabisa phezulu{2} phezulu.

4. Ukumelana noKutya kunye ne-10,000-Iyure ye-MTBF: Gcina ii-CRAC zisebenza 24/7

Amaziko eenkcukacha aqhuba ngokungapheliyo{0}}kwaye ixesha lokuphumla liyintlekele. Ityhubhu yesiNtu{2}}i-fin condensers zisilela kwangoko ngenxa yobhedu{3}}ye-aluminiyam ye-galvanic corrosion, kodwa ii-MCHEs zakhelwe ukuhlala:

Ulwakhiwo olungenamthungo: Ukugutyungelwa kwevacuum kuphelisa "ubhedu-izithuba zealuminiyam" (eyona nto ibangela umhlwa).

Ukwaleka ngokwesiko: Iepoxy okanye iipolytetrafluoroethylene (20–50 μm ubukhulu) zongeza ukuxhathisa kokutshizwa kwetyuwa ukusuka kwiiyure ezingama-500 ukuya kwiiyure ezingama-1500.

Isiphumo? I-MTBF (iMean Time Between Failures) ibetha iiyure ezili-10,000{2}}phantse iphindeke kabini leyo yetyhubhu{3}}fin (5,000–6,000 iiyure). Ulungiso oluncinci=ixesha elingaphantsi lokuphumla kwiziko lakho ledatha.

Uhlengahlengiso lweSiko lobuGcisa: Yenza iiMCHE zisebenzele iCRAC yakho

Ii-MCHEs aziyo "drop{0}}in" replacement{1}}zifuna ukulungiswa ukuze zingqinelane neemfuno ezizodwa zeeCRACs. Nantsi indlela esiwanyusela ngayo kumaziko edatha:

1. Uyilo oluSmart lokuguquguquka komthwalo kunye nengxolo ephantsi

Iindlela zokupasa ezininzi{{0}: Iseva ilayisha spike ngexesha lasemini kwaye yehla ebusuku. I-MCHEs zisebenzisa i-2-4 i-flow channels yecandelo, idibaniswe kunye ne-valve yokwandisa i-electronic, ukulungelelanisa ukuhamba kwefriji: amandla apheleleyo eencopho, amandla ayingxenye ye-lulls. Oku kuthintela "{4}}ukungasebenzi kakuhle komthwalo" othwaxa iicondensers zemveli enye{5}.

Amaphiko azolileyo: Amaziko eenkcukacha afuna ingxolo Ngaphantsi okanye elingana ne-60 dB (A). Ii-MCHE zisebenzisa amaphiko epitch louvered emxinwa ({2}}isithuba se-pitch louvered (1.8–2.2 mm isithuba) kunye{5}}neefeni zokuqukuqela komoya eziphantsi (1.5–2.0 m/s){8}}ukusika ingxolo ngo-3–5 dB (A) vs.

2. (I-Corrosion & Clogging Protection): Yakhelwe iNdawo yeeNdawo zeDatha

Uthuli, umsi webhetri ye-UPS, kunye nokukalwa kwamanzi yingozi kwiziko ledatha{0}}iiMCHEs zijongana nazo ngentloko{1}}kwi:

Okumbini-umaleko wokuchasa{1}}ukutyaleka kokutya: I-Chromate passivation (5-10 μm) ikhuthaza ukunamathela, ngelixa i-epoxy top layer (20-30 μm) ivala imidiya ephazamisayo. Uvavanyo lubonisa ukuba luxhathisa umhlwa ngaphezu kweminyaka eyi-8 kumaziko edatha.

Amanzi-ulungiso lokuvaleka ecaleni (amanzi{1}}iiCRAC ezipholileyo): Amajelo e-MCHE (1–2 mm) aqhelene nokukalisa{2}}ngoko songeza:

Izihluzi ze-100-mesh zensimbi engenasici ukubambisa ukungcola.

Iitshaneli ezithe chatha (i-1 mm yokungena → 1.5 mm yokuphuma) ukunciphisa ukuqukuqela - komlinganiselo we-spikes ebangela isikali.

Ukutya -i-grade scale inhibitors (umzekelo, i-polycarboxylic acid) ukwandisa ixesha lokucoca ukuya kwiinyanga ezili-12 (vs . 6 iinyanga zetyhubhu{5}}fin).

3. Udibaniso lweCRAC olungenamthungo: Akukho nkunkuma, akukho kuvuza

Ii-MCHEs zisebenza ngcono xa zidityaniswe neenkqubo zeCRAC{0}}sinyusa lonke uqhagamshelo:

Ukuthelekisa abalandeli: Amaphiko e-MCHE ane-15–20% esezantsi yokumelana nomoya kunetyhubhu{2}}ifin. Sisebenzisa -i-static-ephantsi yoxinzelelo abalandeli (50–80 Pa) kunye nesantya se-cap Ngaphantsi okanye silingana no-1400 rpm ukugcina amandla ngaphandle kokuncama ukupholisa.

Ukuvuza{{0}ubungqina bojongano: Iiheader ezidityanisiweyo zisike ujongano ukubala ukusuka kwi-8-12 (ityhubhu-ifin) ukuya kwi-2–4. Kabini-amatywina e-ferrule agcina ukuvuza Ngaphantsi okanye kulingana no-1×10⁻⁹ Pa·m³/s (ngovavanyo lwe-helium yokuvuza){8}}kubalulekile kukhuseleko lwefriji.

Kutheni iiMCHE zilikamva leCRAC Condensers

Kumaziko edatha, ii-MCHEs ayiyonto nje ingcono yokutshintshisa ubushushu{0}ziyindlela yokubetha usukelo lozinzo, ukunciphisa iindleko, kunye nokugcina iiseva zisebenza ngokuthembekileyo. Nokuba wakha indawo-enoxinano oluphezulu okanye uphucula iiCRAC ezindala, ii-MCHEs zizisa ukusebenza kakuhle, ukonga indawo, kunye nokuqina okudingayo ukuze uhlale ukhuphisana.

Ngaba ukulungele ukutshintsha iCRAC condensers? Jonga ukuba ii-MCHEs zinokuthoba njani iPUE yakho kwaye zonyuse ukusebenza kweziko lakho ledatha namhlanje.

Iifayile ezishisayo: Umatshini wokuhlamba i-microchannel wokomisa i-condenser, umatshini wokuhlamba we-microchannel waseTshayina wokomisa abavelisi, ababoneleli, umzi-mveliso