Mfundo yoziziritsira ya compressor ya magawo awiri

Nthawi yoziziritsira ya compressor ya magawo awiri nthawi zambiri imagwiritsa ntchito ma compressor awiri, omwe ndi compressor yotsika mphamvu ndi compressor yokwera mphamvu.

1.1 Njira yowonjezerera mpweya wozizira kuchokera ku mphamvu yotuluka nthunzi kupita ku mphamvu yoziziritsa imagawidwa m'magawo awiri

Gawo loyamba: Choyamba, compressor yotsika mphamvu imapanikizidwa kufika pamlingo wapakati:
Gawo lachiwiri: mpweya womwe uli pansi pa kupanikizika kwapakati umakanikizidwanso ku kupsinjika kwa condensation ndi compressor yamphamvu pambuyo pozizira kwapakati, ndipo kuzungulira kobwerezabwereza kumatsiriza njira yoziziritsira.

Popanga kutentha kochepa, choziziritsira cha nthawi yoziziritsira ya magawo awiri chimachepetsa kutentha kwa malo olowera mu compressor ya gawo la kuthamanga kwambiri, komanso chimachepetsa kutentha kwa kutulutsa kwa compressor yomweyo.

Popeza nthawi yoziziritsira ya magawo awiri imagawa njira yonse yoziziritsira m'magawo awiri, chiŵerengero cha kupsinjika kwa gawo lililonse chidzakhala chotsika kwambiri kuposa cha kupsinjika kwa gawo limodzi, kuchepetsa zofunikira pa mphamvu ya zida ndikukweza kwambiri magwiridwe antchito a nthawi yoziziritsira. Nthawi yoziziritsira ya magawo awiri imagawidwa m'njira yoziziritsira yapakatikati komanso nthawi yozizira yosakwanira malinga ndi njira zosiyanasiyana zoziziritsira zapakatikati; ngati ikuchokera pa njira yoziziritsira, ikhoza kugawidwa m'njira yoziziritsira ya gawo loyamba ndi nthawi yachiwiri yoziziritsira.

1.2 Mitundu iwiri ya mafiriji opanikizika

Makina ambiri oziziritsira okhala ndi magawo awiri amasankha mafiriji otentha apakatikati ndi otsika. Kafukufuku woyesera akuwonetsa kuti R448A ndi R455a ndi abwino m'malo mwa R404A pankhani ya kugwiritsa ntchito mphamvu moyenera. Poyerekeza ndi njira zina m'malo mwa hydrofluorocarbons, CO2, ngati madzi ogwirira ntchito abwino, ndi njira ina m'malo mwa mafiriji a hydrofluorocarbon ndipo ali ndi makhalidwe abwino pa chilengedwe.

Koma kusintha R134a ndi CO2 kudzawononga magwiridwe antchito a makina, makamaka kutentha kozungulira, kuthamanga kwa makina a CO2 kumakhala kwakukulu ndipo kumafuna chithandizo chapadera cha zigawo zazikulu, makamaka compressor.

1.3 Kafukufuku wokonza bwino kutentha kwa firiji yokhala ndi magawo awiri

Pakadali pano, zotsatira za kafukufuku wokonza bwino njira yoziziritsira yozizira ya magawo awiri ndi izi:
(1) Pamene mukuwonjezera kuchuluka kwa mizere ya machubu mu intercooler, kuchepetsa kuchuluka kwa mizere ya machubu mu air cooler kungawonjezere malo osinthira kutentha kwa intercooler pamene kuchepetsa kuyenda kwa mpweya komwe kumachitika chifukwa cha kuchuluka kwa mizere ya machubu mu air cooler. Kubwerera ku inlet yake, kudzera mu kusintha komwe kwatchulidwa pamwambapa, kutentha kwa inlet kwa intercooler kungachepe ndi pafupifupi 2°C, ndipo nthawi yomweyo, mphamvu yozizira ya air cooler ingatsimikizidwe.

(2) Sungani pafupipafupi ya compressor yotsika mphamvu, ndikusintha pafupipafupi ya compressor yokwera mphamvu, potero kusintha chiŵerengero cha voliyumu yotumizira mpweya ya compressor yokwera mphamvu. Pamene kutentha kwa evaporation kuli kokhazikika pa -20°C, COP yayikulu ndi 3.374, ndipo chiŵerengero chachikulu cha kutumizira mpweya chofanana ndi COP ndi 1.819.

(3) Poyerekeza machitidwe angapo ofala a CO2 transcritical awiri-stage compression refrigeration, zatsimikiziridwa kuti kutentha kwa mpweya wozizira komanso kugwira ntchito bwino kwa compressor ya low-pressure stage kumakhudza kwambiri kayendedwe ka mpweya pa kuthamanga kwina, kotero ngati mukufuna kukonza bwino makina, ndikofunikira kuchepetsa kutentha kwa mpweya wozizira ndikusankha compressor ya low-pressure stage yomwe imagwira ntchito bwino kwambiri.