加热炉炉内冷却水所带走的热量占总热耗的比重很大,达到15～30%,操作上习惯以提高冷却水出口温差来企图减少其热损失。在初轧厂连续加热炉上测定表明,在通常的流速范围内(V=0.1～2米/秒),无论提高或降低水温差Δt,所测的冷却水带走的热量是常数,即 Heating furnace furnace cooling water away from the total heat consumption accounted for a large proportion of heat to 15 to 30%, the operation used to increase the cooling water outlet temperature in an attempt to reduce the heat loss. The measurement on the continuous furnace at the beginning of the rolling mill showed that the measured heat of cooling water was constant regardless of increasing or decreasing the water temperature difference Δt in the usual flow rate range (V = 0.1 to 2 m / s)