Enhanced power plant air-cooled condensers using auto-fluttering reeds
| Autor: | Srinivas Garimella, Allison J. Mahvi, Roland V. Crystal, Taylor S. Kunke |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Pressure drop
Rankine cycle Power station business.industry 020209 energy Heat transfer enhancement Energy Engineering and Power Technology 02 engineering and technology Heat transfer coefficient Industrial and Manufacturing Engineering law.invention Electricity generation 020401 chemical engineering law Heat transfer 0202 electrical engineering electronic engineering information engineering Environmental science 0204 chemical engineering Process engineering business Condenser (heat transfer) |
| Zdroj: | Applied Thermal Engineering. 193:116956 |
| ISSN: | 1359-4311 |
| Popis: | Air-cooled condensers offer a pathway to decreasing the water consumption associated with electricity production, but dry-cooled plants suffer from lower efficiencies than those of conventional systems. One approach to increasing the performance of air-cooled condensers is to employ heat transfer enhancement techniques. Many enhancement devices have been proposed, but they have not been evaluated in air-cooled condensers at relevant scales. One promising low-cost air-side enhancement approach is the use of auto-fluttering reeds, which increase the vorticity of the flow and result in higher heat transfer coefficients. This work investigates the use of auto-fluttering reeds in a dry-cooled Rankine cycle power plant experimentally and numerically. The experimental results quantify the pressure drop and heat transfer characteristics of the enhanced condensers, which are then incorporated into a detailed model to assess performance at the system level. The air-cooled condenser geometry is also optimized to determine the maximum efficiency with and without the reeds. The results show that auto-fluttering reeds could improve the system performance in retrofit applications and may have some economic benefits in new dry-cooled power plants. |
| Databáze: | OpenAIRE |
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