A na-eji gwongworo refrigerated dị ka gwongworo refer, n'ezie, nwere onboard, nke etinyere n'ime friji ma ọ bụ friza, agbanyeghị, nkeji ndị a na-arụ ọrụ n'enweghị nsogbu na sistemu eletriki na chaja nke ụgbọ ala.