Frost-crack of the radiator tube bundles during the period of winter in frigid area is a comparatively prominent problem for indirect air-cooled system with suface condenser

a cause analysis for the said problem has been carried out

taking emphatically the freeze-up mechanism as the point of departure. It is considered from said analysis that the short-circuit of intermediate partition plate is the main cause resulting in frost-crack of the said tube bundles

and corresponding technical measures for improvements have been put forward.