Zoo heev uas tsis muaj tus kheej - tso tawm system tsim rau cylindrical roj teeb daim ntaub ntawv;
Tshaj 95% muaj peev xwm seem tom qab 12 lub hlis cia ntawm 25 ℃;
Tshaj 92% muaj peev xwm seem tom qab 12 lub hlis cia ntawm 45 ℃, thiab txog 82% tom qab 12 lub hlis cia ntawm 60 ℃.