1. Kazhinji pane nzira mbiri dzekuzivikanwa kwedhigirii yevacuum, imwe ndeyokushandisa dhigirii yakakwana (kureva: absolute vacuum degree) kuziva, uye imwe yacho ndeyokushandisa dhigirii yakaenzana (kureva: dhigirii yevacuum) kuziva.
2. Iyo inonzi "absolute pressure" inoreva kuti pombi yevacuum yakabatana nemudziyo wekuona. Mushure menguva yakakwana yekuenderera mberi kwekupomba, kudzvinyirira mumudziyo hakupfuuriri kudonha uye kuchengetedza imwe kukosha. Panguva ino, kukosha kwegasi mumudziyo ndiko kukosha kwakakwana kwepombi. pressure. Kana pasina zvachose gasi mumudziyo, ipapo mhedziso yekumanikidza ndeye zero, inova iyo theoretical vacuum state. Mukuita, kudzvanywa kwepombi yevacuum kuri pakati pe0 ne101.325KPa. Hwako hwekumanikidza hwakakwana hunoda kuyerwa nemudziyo wekumanikidza wakakwana. Pa20 ° C uye urefu = 0, kukosha kwekutanga kwechiridzwa 101.325KPa. Muchidimbu, simba remhepo rinozivikanwa ne "theoretical vacuum" sereferensi inonzi: "absolute pressure" kana "absolute vacuum".
3. “Relative vacuum” zvinoreva mutsauko uripo pakati pekumanikidza kwechinhu chakayerwa nemhepo yemuchadenga yenzvimbo yekuyera. Yakayerwa neyakajairika vacuum gauge. Mukusavapo kwevacuum, kukosha kwekutanga kwetafura ndeye 0. Pakuyera vacuum, kukosha kwayo kuri pakati pe0 uye -101.325KPa (inowanzoonekwa senhamba isina kunaka). Semuyenzaniso, kana kuyerwa ukoshi huri -30KPa, zvinoreva kuti pombi inogona kupomba ichienda kunzvimbo yevacuum iri 30KPa yakaderera pane mhepo yemuchadenga panzvimbo yekuyera. Kana iyo pombi imwe chete ikayerwa munzvimbo dzakasiyana, kukosha kwayo kwehudzvanyiriri kunogona kuve kwakasiyana, nekuti kudzvanywa kwemhepo kwenzvimbo dzakasiyana dzekuyerwa kwakasiyana, izvo zvinokonzerwa nemamiriro akasiyana-siyana echinangwa sekukwirira uye tembiricha munzvimbo dzakasiyana. Muchidimbu, simba remhepo rinozivikanwa ne "nzvimbo yekuyera atmospheric pressure" sereferensi inonzi: "relative pressure" kana "relative vacuum".
4. Mutoo wakajairika uye wesainzi muindasitiri yepasi rose yevacuum ndeyekushandisa zvachose chiratidzo chekumanikidza; Inoshandiswawo zvakanyanya nekuda kweiyo nzira yakapusa yekuyera vacuum, iyo yakajairika yekuyeresa zviridzwa, zviri nyore kutenga uye mutengo wakachipa. Ehe, zviviri izvi zvinogoneka kuchinjika. Nzira yekushandura ndeyotevera: mhedziso yakakwana = mhepo yemhepo panzvimbo yekuyera - kukosha kwakakwana kwekumanikidzwa kwehama.
Nguva yekutumira: May-27-2022