Vim nws qhov kub thiab txias heev, dej khov qhuav yuav khov cov zaub mov uas nws tuaj yeem cuam tshuam ncaj qha. Qhov no yuav ua kom koj cov perishables nyob khov, tsis muaj thawing. … Yuav kom khaws cov zaub mov kom khov, cov ice pellets qhuav tau pom zoo kom ntim rau qhov chaw khoob.. Nco ntsoov lub sijhawm koj qhib koj lub qhov txias txias.
Cov dej khov qhuav yuav cia zaub mov khov ntev npaum li cas?
Cov dej khov qhuav yuav khaws cov nqaij khov rau 24-48 teev nyob rau hauv lub txias txiasthiab rau 3-5+ hnub hauv qhov txias txias zoo li Yeti. Cov dej khov qhuav yuav ua kom cov nqaij khov rau 1-3 hnub hauv lub freezer tob thaum koj tsis muaj zog.
Puas yog cov dej khov qhuav khov?
Cov Dej Dej Qhuav yog tshwj xeeb yog qhov tseem ceeb rau kev khov, thiab khaws cov khoom khov vim nws txias heev: -109.3 ° F lossis -78.5 ° C. Qhuav Ice yog dav siv vim nws yooj yim rau khov thiab yooj yim los lis siv cov hnab looj tes insulated.
Ib qho dej khov qhuav tau 3 hnub?
Cov dej khov qhuav tuaj yeem kav ntev txog 2-3 hnub yog tias koj siv cov block loj dua thiab cov dej khov qhuav ntau dua. Qee lub tuam txhab xa khoom tuaj yeem ntxiv cov dej khov qhuav thaum mus ncig ntev kom ntseeg tau tias koj lub pob tsis tau sov.
Yuav dej khov qhuav tawg hauv qhov txias?
Thaum cov dej khov qhuav "melted" nws tso cov pa roj carbon dioxide uas tuaj yeem tsim hauv lub tshuab cua txias thiab ua kom tawg. Cov neeg siv yuav tsum ua raws li cov lus qhia tshwj xeeb siv thiab kev tiv thaiv kev nyab xeeb thaum siv cov dej khov qhuav.
Scientific Tuesdays - Freezing Stuff with Dry Ice
