采用数值计算方法,以水为流动介质研究了不同类型的折流杆式换热器,并分析了其流动与传热特性。在Re为3 000~21 000时,方杆的换热效果明显优于圆杆,最多高出圆杆40%~50%,但其阻力最多却增加了3倍。采用h/ΔP作为综合性能评价参数,结果表明折流杆的形状为圆杆时综合换热效果最好。 Using numerical methods, different types of baffled rod heat exchangers were studied using water as the flow medium, and their flow and heat transfer characteristics were analyzed. When Re is 3 000 ~ 21 000, the heat transfer effect of the square bar is obviously better than that of the round bar, up to 40% ~ 50% higher than that of the round bar, but its resistance increases up to 3 times at most. Using h / ΔP as the comprehensive performance evaluation parameters, the results show that the baffle rod shape round rod when the comprehensive heat exchange effect is best.