管翅式热管换热器性能分析

摘要

一款具有新型结构的热管换热器，与传统的此类换热器相比，新装置可以方便地安装螺旋型翅片，使其换热效果在不变的基础上增加了除尘的功能。针对所设计的一种新型热管换热器，本文采用FLUENT软件对其进行模拟。模拟结果表明，改进之后的新型换热器不但换热效率有所提高，而且具有一定的除尘能力，这种新型换热器采用的是螺旋翅片形式的热管，烟气流通区域存在有环形流道，这种设计的好处是，它使得灰尘颗粒在翅片管以及换热器内壁表面聚集，同时由于重力作用，这些灰尘在达到一定重量后就会沿着翅片的倾角降落到排灰斗中。%A gravity type heat pipe heat exchanger has be designed in the paper. Compared to traditional heat pipe heat exchanger,the new equipment can add fins strengthening heat transfer conveniently. The new equipment increasing the dust removal function while the effect of heat transfer was no change. this issue developed a new heat pipe heat exchanger, and made numerical simulation by the software of FLUENT. This new type heat exchanger not only has high thermal efficiency, but also has certain dusting ability, its internal heat pipe adopting spiral finned tube form,the flue gases side and water side are circular runner. This kind of unique internal structure made the dust particles in the flue gases easy to deposit on the surface of spiral finned tube and in wall, and in the pull of gravity the dust particles falls down to the ash hopper.