关键词: 真空, 相变换热, 真空加热炉, 节能

Abstract: Currently, the main heating furnace models which are applied in oil and gas gathering and transmission in China include direct heating furnace type (tube furnace and drum type direct heating furnace) and indirect heating furnace type (water jacket furnace, organic heat carrier furnace, phase change heater) . Vacuum furnace was developed by eliminating the shortcomings of conventional heating furnaces. By means of vacuum phase-change heat-transfer technology and many heating technologies, the heating furnace is assembled with an automatic burner, an automatic control and a multi-heat exchanger assembly so that the product can improve heat transfer more effectively and has higher thermal efficiency (not less than 88%) . This paper gives a brief introduction to the working principle and technical characteristics of the vacuum furnace, and usage characteristics and applications of typical products in typical working conditions. The article also compare the vacuum furnace with water jacket furnace in energy saving, which shows that the product is safe and reliable, fully functional, energy-saving and so on, and thus it will be widely applied in the future.

Key words: vacuum, phase change heat exchange, vacuum heating furnace, energy saving