期刊
CASE STUDIES IN THERMAL ENGINEERING
卷 36, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.csite.2022.102220
关键词
Heat exchanger; Flue gas cooling; Condensation; Polymer; Hollow fiber; Polyamide
资金
- Ministry of Education, Youth and Sports of the Czech Republic under OP RDE [CZ.02.1.01/0.0/0.0/16_019/0000753]
Polymeric hollow fiber heat exchangers are ideal for flue gas cooling due to their corrosion resistance, self-cleaning capability, and high heat transfer coefficient.
Polymeric hollow fibers heat exchangers can be effectively used for flue gas cooling. These heat exchangers are made of hundreds of hollow fibers with an outer diameter of 1.3 mm and a wall thickness of 0.15 mm. Selection of material allows to work with aggressive gasses and condensed liquids without risk of corrosion or damage by chemicals. These fibers may seem to be fragile, but they can stand up the inner pressure above 100 bar at room temperature and have burst pressure of 60 bar at temperature of 80 degrees C. Their surface is very smooth and that positively contributes to low fouling and its capability of self-cleaning. The flowing condensate is cleaning the fibers during its operating and it carries ash particles size up to 0.22 mm. No marks of abrasion or corrosion were observed on the fibers. Due to the low inner diameter of the fibers, the internal flow is laminar and heat transfer coefficient is velocity independent and high (2317 W/m(2)K). Values of overall heat transfer coefficient are over 100 W/m(2)K and are dominantly determined by heat transfer on the gas side. Measured volume heat performance of the tested heat exchangers varied from 4.2 MW/m(3) to 2.2 MW/m(3).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据