1. Kuyambitsa Ma Parallel Refrigeration Units
Parallel unit imatanthauza refrigeration unit yomwe imaphatikiza ma compressor oposa awiri mu rack imodzi ndipo imatumikira ma evaporator angapo. Ma compressor ali ndi evaporation pressure yofanana ndi condensation pressure, ndipo parallel unit imatha kusintha mphamvu yokha malinga ndi katundu wa system. Imatha kupangitsa kuti compressor iwonongeke mofanana, ndipo refrigeration unit imakhala ndi malo ochepa, ndipo ndi yosavuta kugwiritsa ntchito centralized control ndi remote control.
Magawo omwewo amatha kupangidwa ndi ma compressor amtundu womwewo, kapena mitundu yosiyanasiyana ya ma compressor. Akhoza kupangidwa ndi mtundu womwewo wa compressor (monga makina a piston), kapena akhoza kupangidwa ndi mitundu yosiyanasiyana ya ma compressor (monga makina a piston + makina okulungira); amatha kuyika kutentha kwa evaporation imodzi kapena kutentha kosiyanasiyana kwa evaporation. Kutentha; ikhoza kukhala dongosolo la gawo limodzi kapena dongosolo la magawo awiri; ikhoza kukhala dongosolo la single-cycle kapena system ya cascade, ndi zina zotero. Ma compressor ambiri odziwika bwino ndi machitidwe ofanana a single-cycle a mtundu womwewo.
Mayunitsi a compressor ofanana bwino amagwirizana bwino ndi mphamvu yozizira ya makina oziziritsira. Mwa kusintha kuyambika ndi kuyima kwa compressor mu makina onse, mkhalidwe wa "kavalo wamkulu ndi ngolo yaying'ono" umapewedwa. Mwachitsanzo, pamene kufunikira kwa mphamvu yozizira kuli kochepa m'nyengo yozizira, compressor imayatsidwa pang'ono, ndipo m'chilimwe, kufunikira kwa mphamvu yozizira kumakhala kwakukulu, ndipo compressor imayatsidwa kwambiri. Kupanikizika kwa compressor unit kumakhala kosasintha, zomwe zimapangitsa kuti makinawo azigwira bwino ntchito. Kuyesera koyerekeza kwa unit imodzi ndi unit yofanana kwachitika pa makina omwewo, ndipo makina a unit yofanana amatha kusunga mphamvu ndi 18%.
Zowongolera zonse za ma compressor, ma condenser ndi ma evaporator zitha kuyikidwa mu bokosi lowongolera lamagetsi la system, ndipo ma controller apakompyuta angagwiritsidwe ntchito kuti awonjezere magwiridwe antchito a system. Mwachidule, ntchito yonse yopanda munthu komanso kugwiritsa ntchito kutali zitha kuchitika.
2. Kuwongolera kwa payipi ndi kusankha kwa mainchesi a payipi
Kulowera kwa payipi: Mu makina oziziritsira a Freon, mafuta odzola a compressor amazungulira mu makinawo pamodzi ndi refrigerant, kotero kuti zitsimikizire kuti mafuta abwerera bwino mu makinawo, payipi yobwerera (payipi yotsika mphamvu) iyenera kukhala ndi malo otsetsereka enaake Kupita ku compressor, nthawi zambiri yokhala ndi malo otsetsereka a 0.5%.
Kusankha kukula kwa mapaipi: Ngati kukula kwa chitoliro cha mkuwa kuli kochepa kwambiri, kutayika kwa mphamvu ya refrigerant mu payipi yoperekera madzi (payipi yothamanga kwambiri) ndi payipi yobwezera mpweya (payipi yothamanga pang'ono) kudzakhala kwakukulu kwambiri; Ngati mtengo wake ndi waukulu kwambiri, ngakhale kutayika kwa mphamvu ya kukana mu payipi kungachepe, kudzapangitsa kuti ndalama zoyambira ziwonjezeke, ndipo nthawi yomweyo, kudzapangitsanso kuti mafuta asabwerere mofulumira mu payipi yobwerera mpweya.
Mfundo yofunikira yosankha m'mimba mwake wa chitoliro: liwiro la kuyenda kwa firiji mu payipi yoperekera madzi ndi 0.5-1.0m/s, osapitirira 1.5m/s; mu payipi yobwerera mpweya, liwiro la kuyenda kwa firiji mu payipi yopingasa ndi 7-10m/s, liwiro la kuyenda kwa firiji mu payipi yokwera ndi 15-18m/s.
Kapangidwe ka mtundu wa nthambi: Pali mitu ya zinthu zamadzimadzi ndi mitu ya zinthu zobweza mpweya pa chipangizo chofanana, ndipo pali nthambi zingapo za zinthu zamadzimadzi pa chipangizo chofanana, ndipo nthambi imodzi ya zinthu zobweza mpweya yofanana ndi nthambi iliyonse ya zinthu zamadzimadzi imasonkhanitsidwa mu Cholumikizira cha mpweya chofanana, chomwe chimatchedwa mtundu wa nthambi. Nthambi ziwiri zilizonse, zomwe ndi nthambi ya zinthu zamadzimadzi ndi nthambi yake yobweza mpweya yofanana, zimatha kukhala ndi chosinthira mpweya chimodzi (nthambi 1) kapena gulu la zinthu zobweza mpweya (nthambi n). Ngati ndi gulu la zinthu zobweza mpweya, nthawi zambiri gulu la zinthu zobweza mpweya limayamba ndikuyima nthawi yomweyo.
Evaporator ndi yapamwamba kuposa compressor:
Ngati evaporator ili pamwamba pa compressor, bola ngati mzere wobwerera uli ndi malo otsetsereka enaake ndikusankha m'mimba mwake woyenera wa chitoliro, makinawo amatha kuonetsetsa kuti mafuta abwerera bwino. Komabe, ngati kusiyana kwa kutalika pakati pa evaporator ndi compressor kuli kwakukulu kwambiri, refrigerant yamadzimadzi yomwe ili mupayipi yoperekera madzi imapanga nthunzi ya flash isanafike pamakina oziziritsira.
Evaporator ndi yotsika kuposa compressor:
Ngati evaporator ili yotsika kuposa compressor, refrigerant yomwe ili mu payipi yoperekera madzi sipanga nthunzi yowala chifukwa cha kusiyana kwa kutalika pakati pa evaporator ndi compressor, koma popanga payipi yosungiramo zinthu zoziziritsira, kubwereranso kwa makinawo kuyenera kuganiziridwa mokwanira. Vuto la mafuta, pakadali pano, kupindika kwa mafuta kuyenera kupangidwa ndikuyikidwa pagawo lokwera la nthambi iliyonse ya mpweya wobwerera.
Evaporator ndi yapamwamba kuposa compressor:
Ngati evaporator ili pamwamba pa compressor, bola ngati mzere wobwerera uli ndi malo otsetsereka enaake ndikusankha m'mimba mwake woyenera wa chitoliro, makinawo amatha kuonetsetsa kuti mafuta abwerera bwino. Komabe, ngati kusiyana kwa kutalika pakati pa evaporator ndi compressor kuli kwakukulu kwambiri, refrigerant yamadzimadzi yomwe ili mupayipi yoperekera madzi imapanga nthunzi ya flash isanafike pamakina oziziritsira.
Evaporator ndi yotsika kuposa compressor:
Ngati evaporator ili yotsika kuposa compressor, refrigerant yomwe ili mu payipi yoperekera madzi sipanga nthunzi yowala chifukwa cha kusiyana kwa kutalika pakati pa evaporator ndi compressor, koma popanga payipi yosungiramo zinthu zoziziritsira, kubwereranso kwa makinawo kuyenera kuganiziridwa mokwanira. Vuto la mafuta, pakadali pano, kupindika kwa mafuta kuyenera kupangidwa ndikuyikidwa pagawo lokwera la nthambi iliyonse ya mpweya wobwerera.
Nthawi yotumizira: Disembala-22-2022
