Dry ice and ice are two very different substances, and their physical and chemical properties are different. For customers who make and use dry ice, the huge difference between dry ice and ice is especially important. As the year’s dry ice machine manufacturer, we Shuliy machinery can not only provide you the best dry ice pellet machine and dry ice block machine but also can provide you with detailed dry ice basics.
The main difference between dry ice and ice
Joto la barafu kavu kwa ujumla ni -78 ° C, na halijoto ya barafu ni 0 ° C. Barafu kavu ni kaboni dioksidi kaboni CO2, ambayo itapungua ndani ya gesi ya kaboni dioksidi inapofunuliwa na joto. Utaratibu huu haupitii katika hali ngumu na moja kwa moja inakuwa gesi. Barafu ni hali ngumu ya maji, ambayo huyeyuka ndani ya maji ya kioevu inapokanzwa. Hata ikiwa ni kuchemshwa kwa maji ya moto kwa 100 ° C, haiwezi kuyeyuka moja kwa moja na lazima iwe kioevu. Maji ya kioevu huvukiza tu kuwa mvuke wa maji wakati halijoto inapofikia kiwango chake cha kuchemka.
Weka barafu kavu na maji ndani ya vikombe viwili vilivyojaa maji. Barafu kavu hutoka na moshi mnene mweupe, na barafu ya maji ya kawaida haibadilika sana. Ukiigusa kwa mikono, itahisi baridi tu ikiwa utaweka barafu ya maji mikononi mwako kwa dakika 1-2, na barafu kavu itaishikilia kwa chini ya sekunde 5, hakika utaitupa kwa sababu ni baridi sana. kwamba inakuuma mkono moja kwa moja! Kutokana na jaribio hili, tunaweza kutofautisha kati ya barafu kavu na barafu ya maji kwa urahisi na intuitively.
How to properly preserve dry ice pellets and dry ice blocks?
Barafu kavu ni kaboni dioksidi imara, na hakuna maji baada ya tete, lakini kwa sababu joto la barafu kavu ni la chini sana, ni kuhusu -78 digrii. Kwa hiyo, wakati ununuzi wa chembe za barafu kavu au cubes kavu ya barafu, unapaswa kuzingatia. Ikiwa hakuna vifaa maalum vya insulation na njia sahihi za kuhifadhi, barafu kavu itaendelea tete na kuliwa haraka.
Before purchasing dry ice products, you need to prepare an incubator. The glass liner insulation equipment is not recommended. The glass liner may not be able to withstand the severe temperature changes caused by dry ice and will break. You can prepare a foam plastic box, which will have a good thermal insulation effect after adding enough cotton inside. It is also possible to use a special dry ice incubator, but it is important to note that after putting dry ice in it, you cannot tightly seal the lid of the box, otherwise the interior will explode because the sublimation pressure of dry ice continues to rise.
Barafu kavu hutumiwa kwa njia sawa na cubes ya kawaida ya barafu, lakini joto lake ni la chini sana kuliko cubes za kawaida za barafu. Glavu zisizo na nyuzi lazima zivaliwa wakati wa kugusa kwa mkono. Kwa sababu barafu kavu ni tete, barafu kavu iliyobaki lazima imefungwa na nyenzo za insulation na kuhifadhiwa kwenye friji. Hii itapunguza kasi ya uvukizi wa barafu kavu.