The experimental data has been obtained by the test of heat transfer performance of two types of heat exchanger with helical baffles. According to the Kern Law,the approximate calculation formula of heat transfer coefficient is derived.

• 对两种不同螺旋角的螺旋折流板换热器进行传热测试；利用测得试验数据；根据Kern法推导出这两种螺旋折流板换热器壳程传热系数的近似计算公式.