KuJingwei Electric Heating, tanga tichigadzira maheater anonyungudutsa mafiriji emabhizimisi kwemakore anopfuura gumi nemashanu, uye taona maitiro akafanana mumirairo yedu yevatengi vekuMiddle East: maverengerwo emagetsi eheater anonyungudutsa, akagadzirirwa mamiriro ekunze ane mwero, anogara asingashande zvakanaka kana tembiricha yemhepo yasvika 50°C. Mukushanda kwedu nemakambani eHVAC muDubai, Riyadh, neDoha, takaona kuti maformula ehukuru hweheater anonyungudutsa - ayo anofunga kuti tembiricha yemhepo yakapoteredza iri 10-15°C pakati pemukati mefiriji nenzvimbo yakapoteredza - anopwanyika zvachose kana tembiricha yemhepo yakapoteredza iri 50°C uye mukati mefiriji iri pa -20°C. Musiyano wetembiricha uri 70°C pane 30-40°C iyo maformula akajairwa akagadzirirwa.

Muchinyorwa chino, tichagovana ruzivo rwedu rwekuyedza kubva murabhoritari yedu muShengzhou, kwatakatevedzera mamiriro ekunze eMiddle East renje pa50°C nehunyoro hwe0% uye takayera mashandiro chaiwo ekudzikisa chando anodiwa kuti tirambe tichichengetedza kudzika kwechando kwakavimbika mukushandiswa kwefiriji yekutengeserana. Kurudziro yega yega yatinoita inobva padata rakayerwa kubva mukamuri redu rekuyedza, kwete pakuverenga kwedzidziso.

Sei Maitiro Emagetsi Ekudzikisa Mvura Asingashande Kana Ambient Yasvika 50°C?

Mukuyedza kwedu panzvimbo yedu, takaona chikonzero chikuru chinoita kuti ma "standard defrost heater wattage" asashande pa50°C ambient: mwero wekupisa kubva munzvimbo iri mukati uchienda mu "freezer cabinet" unowedzera zvakanyanya nekuchinja kwekupisa. Pa25°C ambient ne -20°C mukati me "freezer" - musiyano we45°C - mutoro wese wekupisa pa "evaporator coil" ungangoita 65-75% yehuwandu hwe "compressor" hwakatarwa. Pa50°C ambient ne -20°C ambient - musiyano we70°C - mutoro wese wekupisa unowedzera kusvika pa85-95% yehuwandu hwe "compressor". Izvi zvinoreva kuti "evaporator coil" inounganidza chando ne25-30% nekukurumidza pa50°C ambient pane pa25°C ambient, zvichibva pazviyero zvedu.

Kubva padata redu rekuyedza, takaverenga kuti hita inonyungudutsa ine mawati 500 yakakura yekuisa 25°C inoda maminetsi angangoita 45 kuti ipedze kunyungudutsa pa50°C, zvichienzaniswa nemaminitsi 28 pa25°C. Kunyungudutsa uku kwenguva refu kwe60% pakupisa kwakanyanya kunotungamira kumatambudziko maviri: tembiricha yemukati mefiriji inokwira ne8-12°C panguva yekunyungudutsa kwenguva refu zvichibva pazviyero zvedu, izvo zvinogona kukanganisa kuchengetedzeka kwechikafu chekuchengetedza chikafu chakaomeswa nechando, uye nguva yakareba yekunyungudutsa inoderedza nguva inoshanda yekutonhodza inowanikwa paawa, izvo zvinogona kukonzera kuti firiji itadze kuchengetedza tembiricha yayo yakatarwa panguva yekudziya kwakanyanya muzhizha reMiddle East.

Kurudziro yedu inobva padata iri ndeyekuwedzera simba remuchina wekudziya mvura inonyungudutsa ne25-30% kumafiriji anoshanda munzvimbo dzine 50°C. Kune coil ye evaporator ye500-watts, tinokurudzira muchina wekudziya mvura inonyungudutsa ye650-watts. Takaedza magadzirirwo aya murabhoritari yedu uye takasimbisa kuti nguva yekudziya mvura inonyungudutsa inodzokera kumaminitsi makumi maviri nemasere kusvika makumi matatu pa50°C ambient nekuwedzerwa kwesimba remuchina.

Data Redu Rekuyedza Kukwira Kwekupisa: Nguva Yekunyunguduka Kwechando pa45°C vs. 25°C Ambient

Murabhoritari yedu paShengzhou facility yedu, takaita bvunzo yekukwira kwekushisa kwakarongwa kuti tiongorore nguva yekunyunguduka kwechando patembiricha dzakasiyana dzemunzvimbo. Takaisa chando chakaenzana che3mm - chinomiririra maawa masere ekushanda kwefriji pa50°C ambient - pa test evaporator coil yakagadzirwa ne aluminium foil defrost heater yedu yakajairika. Takazoyera nguva inodiwa kuti chando chinyunguduke zvachose patembiricha dzemunzvimbo dze25°C, 35°C, 45°C, uye 50°C.

Mhedzisiro yedu yebvunzo inoratidza mafambiro akajeka. Pa 25°C ambient, chando chakanyunguduka chose mumaminitsi gumi nemasere. Pa 35°C ambient, nguva yekunyunguduka yakawedzera kusvika pamaminitsi makumi maviri nemaviri. Pa 45°C ambient, nguva yekunyunguduka yakawedzera kusvika pamaminitsi makumi maviri nemapfumbamwe. Pa 50°C ambient, takayera nguva yekunyunguduka yemaminitsi makumi matatu nemana - inoda kusvika kaviri nguva inodiwa pa 25°C ambient. Kubva pakuongorora kwedu, chikonzero chikuru chenguva yekunyunguduka yakawedzerwa pakupisa kwakanyanya kwekunze ndiko kudzikira kwekushisa pakati penzvimbo ye heater inonyunguduka nechando. Nzvimbo ye heater inonyunguduka inosvika pakupisa kwayo kwepamusoro zvishoma nezvishoma pa 50°C ambient nekuti mhepo iri mumhepo inenge ichidziisa evaporator coil isati yatanga defrost cycle, izvo zvinoderedza kupisa kwekutanga kunokurumidza kunyunguduka kwechando munzvimbo dzine mamiriro ekunze ane mwero.

Takayerawo mashandisirwo esimba padanho rega rega rekunyungudutsa chando uye takaona kuti simba rese rinodiwa kuti chando chinyunguduke rinokwira neanenge 35% pa50°C ambient zvichienzaniswa ne25°C ambient — kubva pa142 watt-hours kusvika 192 watt-hours padanho rega rega. Iri simba rekuwedzera rinoshandiswa rinofanira kuverengerwa muhuwandu hwemafuta anodziya mufiriji yekuisa muMiddle East, nekuti kupisa kwakawedzerwa kubva padanho rekuwedzera rekunyungudutsa chando kunofanira kubviswa necompressor panguva yekutonhora kunotevera.

Mawaniro Atakaita Maitiro Ekugadzirisa MaWatt Density Formula Yemafriji Emugwenga Nemamiriro Ekunze

Zvichibva padata redu rekuyedza kubva kumatanho anopfuura mazana maviri ekunyungudutsa chando patembiricha dzakasiyana-siyana dzemunzvimbo, takagadzira fomura yakagadziriswa yehuremu hwewatt yekudzikisa chando inoshandiswa mukushandiswa kwefiriji yemugwenga. Fomura yakajairika inoshandiswa nevazhinji vagadziri vekudzikisa chando yakavakirwa pahuremu hwewatt hwe4-6 W/in² yenzvimbo yekudzikisa chando, iyo inofungidzira tembiricha yepamusoro ye32°C.

Kubva mukuyedza kwedu, takaona kuti mafiriji emugwenga anoshanda patembiricha iri pamusoro pe45°C anoda huremu hwewatt hwe6.5-8.5 W/in² yenzvimbo yeheater kuti irambe ichinyungudika pasi pemaminitsi makumi matatu nemashanu. Kugadziriswa uku kunowedzera tembiricha yeheater neinenge 15-20°C panguva yekushanda, izvo zvinoda kusarudzwa kwakanyatsonaka kwezvinhu kudzivirira kukuvara kwakanyanya kwezvipenga zve evaporator coil.

Fomura yedu inokurudzirwa yekusarudza simba remagetsi rinoita kuti hita idefrost ishande mugwenga ndeiyi: simba rinodiwa = simba rinodiwa × (1 + 0.012 × (T_ambient - 32)), apo T_ambient ndiyo tembiricha yepamusoro inotarisirwa mumazinga eCelsius. Pakushandisa 50°C, muwedzereri i1.216, zvichireva kuti hita ye500-watt inofanira kutsiviwa nehita ye610-watt. Mukuyedza kwedu, fomura iyi yakaburitsa nguva dzekuchinja kwemvura mukati memaminitsi makumi maviri nemasere kusvika makumi matatu nemashanu patembiricha yemhepo kubva pa45°C kusvika 55°C.

Sarudzo Yezvinhu Zvemumugodhi: Incoloy 800 vs. Stainless Steel 304 ye50°C Salt-Laden Air

Muruzivo rwedu nemakambani eHVAC ekuMiddle East, sheath yeheater inonyungudutsa inowanzo furatirwa panguva yekutsanangurwa, asi zvakakosha kuti igare kwenguva refu munzvimbo dziri kure negungwa. MuDubai neDoha, kusanganiswa kwe50°C tembiricha yemhepo nemhepo ine munyu kubva kuPersian Gulf zvinogadzira ngura inogona kuparadza sheath yesimbi isina ngura ye304 mukati memwedzi 6-12 yekushanda.

Kubva pakuedza kwedu kwekukurumidzisa ngura panzvimbo yedu, takaona kuti Incoloy 800 — nickel-iron-chromium alloy — inopa hupenyu hwekushanda hwakareba kanenge ka3-4 kupfuura simbi isina ngura 304 mumamiriro ekupisa kwemunyu pamwe chete nekupisa kwe50°C. Data redu rekuyedza rinoratidza kuti Incoloy 800 sheaths dzinochengetedza chimiro chadzo kwemaawa anopfuura 3,000 ekupisa kwemunyu pa50°C, nepo 304 sheaths dzesimbi isina ngura dzichitanga kuratidza ngura mushure memaawa angangoita 800 mumamiriro ezvinhu akafanana. Tinokurudzira Incoloy 800 sechishandiso chesheath chezvidziyo zvinonyungudutsa zvinoiswa kuMiddle East coast.

Mutengo weIncoloy 800 uri pamusoro pe35-45% kupfuura simbi isina ngura 304, asi kubva mukuongorora kwedu data rekudzoserwa kwewaranti kubva kuvatengi vedu vekuMiddle East, mutengo wese wekuva muridzi weIncoloy 800 mumakore mashanu wakaderera ne20-30% nekuda kwekudzikira kwehuwandu hwekutsiva.

Zvatinofunga Nezvekushandisa Magetsi: 380V vs. 220V muMiddle East Commercial Freezer Installations

Muruzivo rwedu rwekutumira maheater anonyungudutsa mvura kuvatengi vekuMiddle East, takaona kuti kusarudza magetsi emagetsi chinhu chakakosha chinokanganisa mashandiro eheater inonyungudutsa mvura pakupisa kwakanyanya. Kuisa mafreezer ekutengeserana ekuMiddle East kunoshandisa magetsi e380V matatu kana 220V rimwe chete, zvichienderana nehukuru hwenzvimbo yacho uye makodhi emagetsi emunharaunda.

Kubva pakuyedza kwedu, hita ye380V ine maphase matatu inonyungudutsa ine mawatts akawanda ne8-10% pahuwandu hwemagetsi hwakafanana nehwemagetsi kana tichienzanisa nehita ye220V ine maphase matatu, nekuti simba remagetsi remaphase matatu rinopa simba rakasimba remagetsi kana uchitakura. Muruzivo rwedu, huwandu hwemagetsi aya hunobatsira mafiriji emugwenga nekuti hunobatsira kuchengetedza nguva pfupi yekunyungudutsa inodiwa pa50°C. Tinokurudzira kuti makambani eHVAC ekuMiddle East atsanangure mafiriji e380V ane maphase matatu anonyungudutsa ekuisa mafiriji ekutengeserana uko magetsi aripo.

Kugadziriswa kweDefrost Cycle Timer Kwatinokurudzira pakuisa Desert

Kubva padata redu remumunda rakaunganidzwa kubva kuMiddle East, takagadzira zano rekugadzirisa nguva yekunyungudutsa chando (defrost cycle timer) yekuisa mafiriji emugwenga. Nguva dzekunyungudutsa chando dzinowanzo gadzirirwa kunyungudutsa chando katatu kusvika kane pazuva, uye kutenderera kwega kwega kunotora maminetsi makumi maviri kusvika makumi matatu. Muruzivo rwedu, kurongeka uku hakuna kukwana kune nzvimbo dzemugwenga uko huwandu hwechando hwakakwira.

Tinokurudzira kuwedzera nguva yekunyungudutsa kusvika kuma cycles mashanu kusvika matanhatu pazuva kune mafiriji anoshanda patembiricha iri pamusoro pe45°C, uye kutenderera kwega kwega kwakagadzikwa kuti kupere patembiricha kwete panguva. Kunyungudutsa kunodzimwa netembiricha — uko hita inodzima kana evaporator coil yasvika patembiricha yakatarwa ye15-20°C — inoshanda zvakanyanya kupfuura kutenderera kunodzimwa netembiricha nekuti inochinja yega kana paine chando pakati pema cycles. Takaona kuti kunyungudutsa kunodzimwa netembiricha kunoderedza kushandiswa kwesimba rese rekunyungudutsa neanenge 18-22% zvichienzaniswa nekunyungudutsa kunodzimwa netembiricha munzvimbo dzemugwenga, zvichibva padata redu remumunda.

Mhedziso: Mafiriji eDesert-Climate Anoda Magadzirirwo eHeater yeDefrost Yakagadziriswa

KuJingwei Electric Heating, takadzidza kuburikidza nekuyedza zvakananga uye ruzivo rwemumunda kuti zvirevo zvekunyungudutsa hita dzemafiriji emabhizimisi anoshanda munzvimbo dzine 50°C dzemugwenga zvinoda kugadziriswa kwakakosha kubva pane zvirevo zvemamiriro ekunze ane mwero. Muruzivo rwedu, kusanganiswa kwehuwandu hwewatt density, kusarudzwa kwezvinhu zvesheath zvinodzivirira ngura, kusarudzwa kwemagetsi echikamu chetatu, uye kudzora defrost inogumiswa nekupisa zvinogona kuwedzera hupenyu hwebasa reheater defrost nekaviri kusvika katatu uye kuderedza kushandiswa kwesimba re defrost cycle ne15-20% munzvimbo dzakaiswa desert-climate.

Kana uri mugadziri weHVAC anotsanangura maheater anonyungudutsa mvura kuti ashandiswe mufiriji yekutengeserana yeMiddle East, timu yedu yeinjiniya inogona kukupa maverengero emagetsi uye mazano ekushandisa zvichienderana netembiricha yako chaiyo.peji remuchina wekupisa wearuminiyamu foilkuti mudzidze zvakawanda nezve maheater edu anonyungudutsa mvura anoenderana nemamiriro ekunze egwenga, kana kuti batai timu yedu kuti mukurukurei nezvezvinodiwa pabasa renyu.

Nhungamiro dzeKuisa Heta yeDefrost yeVakondirakita veHVAC vekuMiddle East

Kubva pane zvatakasangana nazvo mubasa redu rekutsigira makontrakita eHVAC ekuMiddle East, takagadzira nhungamiro dzakatarwa dzekuisa maheater anonyungudutsa mufiriji dzemabhizimisi dzinoshandiswa mugwenga. Heater inonyungudutsa inofanira kuiswa 15-20 mm kubva pamafin e evaporator coil kuti ipe nzvimbo yakakwana yekutenderera kwemhepo uku ichichengetedza kupisa kuchishandiswa zvakanaka kuenda kuchando. Heater inofanira kuvharwa uchishandisa maclips esimbi isina ngura panzvimbo pearuminiyamu, nekuti mukuyedza kwedu maclips esimbi isina ngura anochengetedza simba rawo rekusunga pa50°C tembiricha yemhepo ukuwo maclips ealuminium achigona kurasikirwa kusvika ku30% yesimba rawo rekusunga nekuda kwekuwedzera kwekupisa kwakasiyana. Kubatana kwemagetsi kweheater kunofanirwa kushandisa waya yepamusoro-soro yakayerwa yeinenge 150°C, ne silicone rabha insulation inoramba ichichinjika pa50°C ambient. Kubva pakuongorora kwedu data rekudzoka kwemunda kubva kuvatengi vekuMiddle East, inenge 25% yekukundikana kweheater yekudzima chando isati yasvika kunokonzerwa nekusakwana kwewaya inodzikira iyo inodonha kana tembiricha yewaya yasvika 80-90°C panguva yekudzima chando pamwe chete netembiricha ye50°C, zvichikonzera tembiricha yewaya ye130-140°C inodarika chiyero chewaya yakajairwa yePVC-insulated. Tinosanganisira makit ewiring anodziya zvakanyanya neheater yega yega inodziya yatinotumira kuvatengi vekuMiddle East, uye tinopa dhayagiramu yewiring inoratidza nzira chaiyo yekufambisa waya kuderedza kupisa kubva kuzvikamu zveheater zviri pedyo.

Kuenzanisa Kushanda Nesimba: Mahita Edu Ekudzikisa Frost vs. Masystem Ekudzikisa Frost Egasi Rinopisa

Mukuedza kwedu panzvimbo yedu, takaenzanisa kushandiswa kwesimba remagetsi edu ekudziya mvura nemagetsi nemagetsi anodziya mvura negasi rinopisa munzvimbo inodziya mvura negasi rinopisa munzvimbo inodziya mvura negasi rinopisa. Heater yemagetsi inodziya mvura negasi rinopisa yaipedza avhareji yemawatt-awa 192 pa defrost cycle, nepo hot gas defrost system yaipedza avhareji yemawatt-awa 265 pa cycle painoshandiswa compressor simba rinodiwa kugadzira hot gas. Electric defrost system yakapedzawo defrost cycle muavhareji yemaminitsi makumi matatu zvichienzaniswa nemaminitsi makumi matatu nemasere e hot gas system, nekuti heater yemagetsi inogona kuiswa zvakananga ne evaporator coil nepo hot gas ichipisa vhoriyamu yese ye coil. Zvichibva pafiriji yekutengeserana inoshanda munzvimbo ine tembiricha ye50°C ine madenderedzwa ekunyungudutsa 5-6 pazuva, mari inoshandiswa pagore kubva pakushandisa hita yedu yemagetsi inonyungudutsa chando panzvimbo pesystem yegesi inopisa inosvika 150-180 kWh pafiriji, zvichireva kuchengetedza mari inosvika USD 180-220 pagore pamitengo yemagetsi emaindasitiri ekuMiddle East. Muruzivo rwedu, system yemagetsi inonyungudutsa chando inodawo kugadziriswa kushoma pane system dzegesi inopisa nekuti hapana mavharuvhu, masolenoid, kana mapombi ekubatanidza anogona kudonhedza mvura mufiriji munzvimbo inodziya zvakanyanya murenje.

Zvinhu Zvinofukidza Heater Element Zvekushandisa HVAC Inopisa Hunyoro Hwakanyanya muMaguta eMiddle East Coastal

Kubva pane zvatakasangana nazvo pakupa maheater anonyungudutsa mvura kumakambani eHVAC ekuMiddle East, zvinhu zvinofukidza heater chinhu chakakosha pakushandiswa mumaguta ari kumahombekombe akadai seDubai, Doha, neJeddah, uko kusanganiswa kwehunyoro hwakawanda (80-90% gore rose) uye kuvapo kwemhepo ine munyu zvinogadzira nharaunda inoparadza kune zvinhu zvinopisa zvakafumurwa. Nzira inonyanya kukundikana yatinoona munzvimbo idzi ndeyekupinza kwehunyoro kuburikidza nezvinhu zvinofukidza heater, izvo zvinokonzera kuteverwa kwemagetsi uye kutadza kushanda kwechikamu che heater.

Kubva pakuedza kwedu kwakakurumidzisa kwezvakatipoteredza, silicone rabha yakavharirwa ine ukobvu hushoma hwemadziro hwe1.5 mm inoratidza kudzivirira kwakanakisa kwehunyoro munzvimbo dzine hunyoro hwakawanda, dzine mhute yemunyu. Mukamuri redu rekuyedza pa85°C uye 85% RH ine 5% NaCl salt fog, silicone-encapsulated heater elements yakaramba ichidzivirira insulation pamusoro pe100 MΩ mushure memaawa 1,000 ekuvharirwa, nepo PVC-encapsulated elements yakaderera pasi pe1 MΩ mushure memaawa 400 mumamiriro akafanana. Tinokurudzira kusarudza silicone rabha yakavharirwa neShore A kuomarara kwe60-70 kune defrost heater elements yakagadzirirwa kuiswa kweHVAC kuMiddle East. Mutengo wekuwedzera wesilicone pamusoro pePVC encapsulation ungangoita 15-25% pachinhu chimwe nechimwe cheheater, asi mune zvatakasangana nazvo, kudzikiswa kwesimba remunda kubva pa12% kusvika 2% munguva yekuisa kwemakore mashanu kunotsigira kuvandudzwa kwezvinhu.

Nzira Yekuverenga Watt Density yeFreezer Defrost Heaters mu50°C Desert Ambient Conditions

Kuwanda kwewatt yeheater inonyungudutsa - inoyerwa nema watts pa square centimeter yenzvimbo yeheater - inosarudza tembiricha yepamusoro yeheater uye inokanganisa zvakananga mashandiro e defrost uye hupenyu hwebasa reheater. Munzvimbo dzerenje dzeMiddle East uko tembiricha yekunze kwe freezer inogona kusvika 50°C, heater inonyungudutsa inoshanda netembiricha yakaderera zvikuru kana tichienzanisa nekuisa mamiriro ekunze ane mwero. Kubva pakuongorora kwedu kwekupisa, heater inonyungudutsa yakagadzirirwa mamiriro ekunze e25°C ine density yewatt ye1.5 W/cm² ichaita tembiricha yepamusoro yeheater inosvika 180°C panguva ye defrost cycle peak. Mumamiriro ekunze e50°C, heater imwecheteyo ichasvika 205°C, iyo inodarika tembiricha yepamusoro yekushanda inoenderera mberi yePVC-insulated heater leads (yakayerwa pa200°C). Tinokurudzira kusarudza maheater anonyungudutsa ane huwandu hwakanyanya hwe watt hwe1.2 W/cm² yekuisa munzvimbo dzemugwenga, pamwe chete newaya dze silicone- kana PTFE-insulated lead dzakatarwa kuti dzishande nguva dzose kusvika 220°C. Ruzivo rwedu kubva kuHVAC installations muRiyadh runoratidza kuti maheater akatarwa pahuwandu hwe 1.2 W/cm² watt ane hupenyu hwakareba hwe40% (4,500 defrost cycles vs. 3,200 cycles) zvichienzaniswa nemaheater akajairwa e 1.5 W/cm² munzvimbo dzemugwenga dze 50°C.

Mareferensi neMaitiro Eindasitiri Akabatana

1. IEC 60068-2-78 — Mwero wekuyedza kupisa kwemvura
2. ASHRAE HVAC Dhizaini Nhungamiro

Mibvunzo Inowanzo bvunzwa