Kodi ufa wouma wa nthochi umazizira bwanji?

Njira yowumitsa nthochi mufiriji imaphatikizapo magawo angapo: kuyeretsa, kuziziritsa, kuuma pogwiritsa ntchito sublimation, kuumitsa pogwiritsa ntchito desorption, ndi kulongedza. Kuyeretsa kumafunika kuchotsa nthochi, kuziduladula, ndi kuziyika mu pulp kuti zithandize kuuma pambuyo pake. Kuziziritsa kumafuna kuziziritsa nthochi pa kutentha kwina kuti pakhale mawonekedwe okhazikika a sublimation panthawi yowumitsa pogwiritsa ntchito sublimation. Kuwumitsa pogwiritsa ntchito sublimation kumafuna kutenthetsa nthochi mufiriji pansi pa vacuum kuti muchotse chinyezi kudzera mu sublimation. Kuwumitsa pogwiritsa ntchito desorption kumachotsanso chinyezi chotsala kuti chiume bwino. Pomaliza, nthochi yophikidwayo imakhala yokonzeka kugulitsidwa.

Zinthu zingapo zofunika kwambiri ziyenera kulamulidwa mosamala panthawi yowumitsa kuti zitsimikizire kuti zinthu zili bwino. Choyamba,makulidwe a zinthu: Popeza nyemba za nthochi zimakhala zokhuthala kwambiri, makulidwe ofanana ayenera kusungidwa panthawi yopangira kuti pasakhale mavuto monga kusakanikirana kwa zinthu kapena kuuma kosakwanira.kutentha kotentha panthawi ya sublimation: Kafukufuku akusonyeza kuti nthawi youma imachepa pamene kutentha kwa pashelefu kumawonjezeka mkati mwa malo oyenera (≤20°C). Komabe, kutentha kwambiri pansi pa mphamvu yogwira ntchito kungayambitse kusungunuka kwa zinthu, zomwe zimapangitsa kuti kutentha kuchepe. Pomaliza,kupanikizika kwa sublimation: Kuthamanga kwa ntchito kumakhudza kwambiri kutentha ndi kusamutsa kwa unyinji. Kafukufuku akusonyeza kuti kuthamanga kwabwino kwambiri (pafupifupi 40Pa) kumachepetsa nthawi youma.

Mzere wouma wozizira umagwira ntchito ngati chizindikiro chofunikira cha njira youma. Mwa kusanthula ma curve pansi pa mikhalidwe yosiyanasiyana, magawo a njira amatha kukonzedwa bwino. Mwachitsanzo, pansi pa mikhalidwe yabwino kwambiri (kukhuthala kwa 8mm, kutentha kwa 20°C, kupanikizika kwa 40Pa), mzere wouma wozizira umasonyeza magawo okhazikika a sublimation ndi desorption, nthawi yochepa youma, komanso khalidwe labwino kwambiri la zinthu.

Zipangizo zowumitsira zozizira zimasonyeza ubwino waukulu komanso kuthekera kwakukulu kogwiritsa ntchito ufa wa nthochi. Mwa kuwongolera mosamala magawo ofunikira ndikukonza njira, ubwino wa zinthu komanso magwiridwe antchito azinthu zitha kukulitsidwa. Masiku ano, pamene miyezo yazakudya ikukwera, mitundu yosiyanasiyana ya Zipangizo zowumitsira zozizira zomwe zimapangidwa kuti zigwirizane ndi zosowa zapamwamba kwambiri zagwiritsidwa ntchito kwambiri.Takulandirani kuti mufunsekuti mudziwe zambiri.