Abstract
A honeycomb flue gas heat exchanger with high efficiency, low resistance and good cleaning effect was proposed to solve the mutual constraint problem of fouling thermal resistance and soot-blowing effect in flue gas heat exchangers. Firstly, the fouling distribution and morphology of honeycomb heat transfer surface were obtained based on the established fouling prediction model. Then, based on the built online experiment system for fouling characteristics of heat exchange elements, the fouling and heat transfer characteristics of honeycomb heat exchanger were studied experimentally. The results show that the fouling prediction method established in this paper can well predict the fouling and heat transfer characteristics of flue gas heat exchangers. Finally, effects of tube pitches on the fouling and thermal-hydraulic characteristics of the honeycomb heat exchanger were examined parametrically, and the correction of fouling thermal resistance was fitted to facilitate engineering applications.
| Original language | English |
|---|---|
| Pages (from-to) | 2156-2161 |
| Number of pages | 6 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 40 |
| Issue number | 9 |
| State | Published - 1 Sep 2019 |
Keywords
- Experimental verification
- Fouling characteristics
- Fouling thermal resistance
- Honeycomb arrangement
- Numerical analysis