A novel heat exchanger used for cooling high viscous fluids,which has two spiral plate heat exchangers placed one above the other to have the thermosiphon effect that could hold the proper wall temperature,is introduced.

• 介绍了一种由2台螺旋板式换热器叠置在一起的新型换热器，该型换热器可形成热虹吸效应来控制壁温，防止在壁面上形成粘滞的绝热层，从而实现高粘性流体的冷却。