Glass Coating Deposition Temperature on the Inner Surface of Heat-Exchange Tube

The deposition temperature of a glass coating on the inner surface of a heat-exchanger tube was studied. The choice of coating deposition temperature depends on the physico-mechanical properties, geometric dimensions, and temperature distribution at any point of the coating and the metallic part of the heat-exchange tube. The variation of the deposition temperature field of glass coatings on the inner surface of a tube as a function of the heating time of the electric-heating furnace is determined theoretically. It is found that during deposition of a glass coating on the inner surface of the tube the temperature largely depends on the brand and thickness of the sealed glass rod.