Qhov ntsuas kub kom thauj cov khoom khov rau hauv cov thawv ntim tub yees yuav tsum tsis pub tshaj -18 degree. Feem ntau, {{{{1} Tus nqi txias hauv tub yees muaj qhov nruab nrab txias tus nqi ntawm 31.3 degree \/ h thaum khoob. However, after loading goods, the cooling rate significantly decreases due to the high heat capacity of the cargo, often taking 15-16 hours to reach the set temperature. Yog tias tus thawj tawm kub yog qhov siab, nws yuav xav tau 2-3 hnub kom ua tiav lub hom phiaj kub.
Qhov ntsuas kub nce thiab poob rau hauv cov thawv hauv tub yees yog cuam tshuam nrog cov khoom thauj khoom hauv lub thawv. Thaum ntsuas kub ntsuas kub ntawm -18 degree ± 3 degree tau mus txog, qhov kub nyob rau hauv lub thawv yuav tsum cia nyob ruaj khov. Txawm li cas los xij, thaum xam qhov ntsuas kub ntawm cov thawv hauv tub yees thaum nws tsis yog cov mis uas ua raws li cov qauv kev xam tus qauv
1) cov khoom txias (tsis muaj qhov cua txias) {0. 0054 * (tw-tn) degree \/ h
2) Cov khoom khov 0. 0067 * (Tw-Tn) Degree \/ h
Qhov twg tw thiab tn yog qhov ntsuas kub sab nraud thiab ntsuas kub nyob rau hauv lub thawv kawm tiav.
