Abstract
An integrated vortex board is made up of many vortex chambers, an integration of many individual vortex tubes. So its structure is very complicated. Usually, it is considered as an open system. According to the first and second laws of thermodynamics, thermodynamic equations for exergy analysis of integrated vortex board were established. The exergy analysis was conducted on integrated vortex board in combination of experiments, and the effects of the size of separated orifice plate, the length of hot tube, the nozzle structure, the inlet pressure and the cold flow ratio on energy separation and exergy efficiency of vortex board were obtained. The research outcomes showed that, the maximal exergy efficiency of a vortex board occurs when the inlet pressure is 0.45MPa, cold flow ratio is 0.7-0.8 and the ratio of the diameter of cold air orifice to vortex chamber's diameter is 0.5. The longer the length of the hot tube, the higher the exergy efficiency. Moreover, the exergy efficiency of the shrink nozzle is bigger than that of the parallel nozzle.
| Original language | English |
|---|---|
| Pages (from-to) | 814-818 |
| Number of pages | 5 |
| Journal | Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University |
| Volume | 29 |
| Issue number | 8 |
| State | Published - Aug 2008 |
| Externally published | Yes |
Keywords
- Energy separation
- Exergy analysis
- Exergy efficiency
- Integrated vortex board