Tubular tso cua sov muaj peev xwm tsim tau rau hauv txhua yam duab lossis kev teeb tsa tsim nyog kom haum rau daim ntawv thov cua sov.Vim tias lawv yog cov khoom siv hluav taws xob ntau yam uas lawv nyiam heev.Exceptional hloov ntawm tshav kub los ntawm convection, conduction thiab hluav taws xob qiv lawv zoo meej rau ntau yam kev siv xws li cua kub kua, gases, huab cua thiab ntau yam ntawm qhov chaw.