Kodi zofunikila zodziwika bwino zamafiriji ndi ziti?

Ngati choziziracho chimagwira ntchito bwino komanso mosatekeseka, refrigerant ndiyofunika kwambiri. Ndi njira yogwirira ntchito yomwe imazungulira mu chiller refrigeration system kuti ikwaniritse firiji, ndipo imatchedwanso refrigeration working medium kapena refrigerant. Ndiye, ndi zotani zomwe zimafunikira pakugwira ntchito kwa refrigerant kwa zoziziritsa kuzizira zamitundu yosiyanasiyana ya firiji?

1. Thermodynamic properties [plating chiller]

1. Iyenera kukhala ndi mphamvu ya nthunzi yokwanira. Kuthamanga kwa mpweya sikuyenera kukhala kocheperapo kusiyana ndi kuthamanga kwa mumlengalenga kuti mpweya usalowe m’dongosolo (mwachitsanzo, mwachitsanzo, piritsi lozizira / mpweya wozizira / madzi ozizira); kupanikizika kwa condensing sikuyenera kukhala kokwera kwambiri, apo ayi kukakamiza kukana zofunikira za dongosololi kudzakhudzidwa. Kuchulukitsa, ndikuwonjezera kugwiritsa ntchito mphamvu; kuonjezera apo, chiŵerengero cha condensing pressure to evaporating pressure sichiyenera kukhala chokwera kwambiri, apo ayi zipangitsa kutentha kwa kompresa kutulutsa kwa chiller kukwera.

2. Iyenera kukhala ndi kutentha kwakukulu kwambiri (kuposa kutentha kozungulira), kotero kuti ikhoza kusungunuka kutentha kwa firiji kapena kutentha wamba, ndipo kutayika kwa throttling kudzachepetsedwa.

3. Iyenera kukhala ndi kutentha kochepa kolimba. Izi zimalepheretsa refrigerant kuti isaundane pa kutentha kwa mpweya.

4. Iyenera kukhala ndi matenthedwe apamwamba kwambiri. Izi zitha kuwonjezera kuchuluka kwa kutentha kwa chotenthetsera cha chotenthetsera (tenga screw chiller/mpweya woziziritsa / woziziritsidwa ndi madzi monga chitsanzo), kuchepetsa malo otengera kutentha, ndikuchepetsa ndalama zopangira ndi zogwirira ntchito.

5. Payenera kukhala cholozera chaching’ono cha adiabatic. Izi zitha kupangitsa kuti makinawo azidya mphamvu zochepa, ndipo kutentha kwa compressor sikudzakhala kokwera kwambiri.

6. Kutentha kwapadera kwa madzi a refrigerant ndi kochepa. Izi zikhoza kuchepetsa throttling ndondomeko imfa.

2. Kuchita kwathupi ndi mankhwala [kuzizira kozizira mpweya]

1. Iyenera kukhala ndi kachulukidwe kakang’ono ndi kukhuthala, zomwe zingathe kuchepetsa kutayika kwa kukana kwa refrigerant mu unit refrigeration system (tenga screw chiller / air-cooled chiller / chiller woziziritsa madzi monga chitsanzo).

2. Zimafunika kuti zisakhale zoyaka moto, zowonongeka, zopanda poizoni, komanso zosavuta kuwonongeka pansi pa kutentha kwakukulu, komanso kuti zikhale zosavuta kuwononga zitsulo zazitsulo za chiller.