Abstract
A supercritical heat-supply unit with a double reheat employs steam extraction from a low-pressure turbine cylinder for supplying process heat. On the basis of the above arrangement, a method for calculating equivalent enthalpy drop and steam extraction efficiency for the above unit is obtained by making use of an equivalent thermal-drop theory and performing a theoretical analysis and mathematical deduction. A mathematical model based on an economic-quantitative analysis has been derived for the above-mentioned turbine unit, thereby extending the application range of the equivalent heat-drop theory to heat supply units with a double reheat. By using this model it is possible to effect a convenient, rapid and accurate analysis of the thermodynamic system cost-effectiveness of the above supercritical heat supply unit.
| Original language | English |
|---|---|
| Pages (from-to) | 351-353+362 |
| Journal | Reneng Dongli Gongcheng/Journal of Engineering for Thermal Energy and Power |
| Volume | 19 |
| Issue number | 4 |
| State | Published - Aug 2004 |
Keywords
- Double reheat
- Heat supply unit
- Quantitative analysis
- Thermodynamic system