The actual condensing capacity of the condenser of 1# lead column is evidently smaller than the bulk-thermodynamics burden, but the condenser always keeps away from breaking the top in. At present the flame proof device and defence roof at the top of the condenser have been cancelled to strengthen radiating heating intensity to enhance the output. According to the means of heat transfer of the condenser of 1# lead column, the radiating state of the condenser is measured, and a mathematical model of heat transfer on the condensation of zinc vapor in the condenser based on the principle of energ...