隧道窑是热效率较低的热工设备,排烟热损失约占总供热量的30～40%,大量200～300℃的烟气排放到大气中。回收这部分余热资源已成为刻不容缓的任务。常规的间壁式换热器传热能力低、经济效益差。热管换热器是近年来发展较快的一种新型余热回收装置,具有传热能力高、体积小、重量轻、密闭性好、易装修等特点,是回收工业 Tunnel kilns are thermal equipment with low thermal efficiency. Exhaust heat loss accounts for 30-40% of the total heat supply. A large amount of flue gas with 200-300 ℃ is discharged into the atmosphere. Recycling this part of waste heat resources has become an urgent task. Conventional heat exchanger with low heat transfer capacity, poor economic efficiency. Heat pipe heat exchanger is developing rapidly in recent years, a new type of waste heat recovery unit, with high heat transfer capacity, small size, light weight, airtight, easy to decorate and other characteristics of the recycling industry